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Highly sensitive volumetric single-molecule imaging Nanophotonics (IF 6.5) Pub Date : 2024-07-12 Le-Mei Wang, Jiah Kim, Kyu Young Han
Volumetric subcellular imaging has long been essential for studying structures and dynamics in cells and tissues. However, due to limited imaging speed and depth of field, it has been challenging to perform live-cell imaging and single-particle tracking. Here we report a 2.5D fluorescence microscopy combined with highly inclined illumination beams, which significantly reduce not only the image acquisition
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A review of gallium phosphide nanophotonics towards omnipotent nonlinear devices Nanophotonics (IF 6.5) Pub Date : 2024-07-11 Yifan Wang, Ziyu Pan, Yongxian Yan, Yatao Yang, Wenhua Zhao, Ning Ding, Xingyu Tang, Pengzhuo Wu, Qiancheng Zhao, Yi Li
Gallium phosphide (GaP) has been increasingly prioritized, fueled by the enormous demands in visible light applications such as biomedical and quantum technologies. GaP has garnered tremendous attention in nanophotonics thanks to its high refractive index, indirect bandgap width of 2.26 eV, lattice perfectly matched with silicon, and omnipotent and competitive nonlinear optical properties. Herein,
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Free electrons spin-dependent Kapitza–Dirac effect in two-dimensional triangular optical lattice Nanophotonics (IF 6.5) Pub Date : 2024-07-11 Jiahao Tian, Fang Liu, Xiaotong Xiong, Yidong Huang
The free electron spin dynamics in Kapitza–Dirac (KD) effect had been studied theoretically in one-dimensional standing wave of EUV to X-ray laser with extremely high intensity, which is far beyond experimental realization. Here, we propose to achieve the free electron spin-dependent KD effect in two-dimensional triangular optical lattice with spatial inversion symmetry breaking, and the theoretical
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Second harmonic generation in monolithic gallium phosphide metasurfaces Nanophotonics (IF 6.5) Pub Date : 2024-07-11 Muyi Yang, Maximilian A. Weissflog, Zlata Fedorova, Angela I. Barreda, Stefan Börner, Falk Eilenberger, Thomas Pertsch, Isabelle Staude
Gallium phosphide (GaP) offers unique opportunities for nonlinear and quantum nanophotonics due to its wide optical transparency range, high second-order nonlinear susceptibility, and the possibility to tailor the nonlinear response by a suitable choice of crystal orientation. However, the availability of single crystalline thin films of GaP on low index substrates, as typically required for nonlinear
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Giant second-harmonic generation in monolayer MoS2 boosted by dual bound states in the continuum Nanophotonics (IF 6.5) Pub Date : 2024-07-11 Ji Tong Wang, Jian Wei You, Nicolae C. Panoiu
Dielectric metasurfaces open new avenues in nonlinear optics through their remarkable capability of boosting frequency conversion efficiency of nonlinear optical interactions. Here, a metasurface consisting of a square array of cruciform-shaped silicon building blocks covered by a monolayer MoS2 is proposed. By designing the metasurface so that it supports optical bound states in the continuum (BICs)
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Flat lens–based subwavelength focusing and scanning enabled by Fourier translation Nanophotonics (IF 6.5) Pub Date : 2024-07-10 Xin Zhang, Yanwen Hu, Haolin Lin, Hao Yin, Zhen Li, Shenhe Fu, Zhenqiang Chen
We demonstrate a technique for flexibly controlling subwavelength focusing and scanning, by using the Fourier translation property of a topology-preserved flat lens. The Fourier transform property of the flat lens enables converting an initial phase shift of light into a spatial displacement of its focus. The flat lens used in the technique exhibits a numerical aperture of 0.7, leading to focusing
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Long-range molecular energy transfer mediated by strong coupling to plasmonic topological edge states Nanophotonics (IF 6.5) Pub Date : 2024-07-10 Álvaro Buendía, José A. Sánchez-Gil, Vincenzo Giannini, William L. Barnes, Marie S. Rider
Strong coupling between light and molecular matter is currently attracting interest both in chemistry and physics, in the fast-growing field of molecular polaritonics. The large near-field enhancement of the electric field of plasmonic surfaces and their high tunability make arrays of metallic nanoparticles an interesting platform to achieve and control strong coupling. Two dimensional plasmonic arrays
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Experimental observation of spin Hall effect of light using compact weak measurements Nanophotonics (IF 6.5) Pub Date : 2024-07-10 Jeonghoon Choi, Sangmin Shim, Yeseul Kim, Peng Tang, Guoqiang Li, Junsuk Rho, Dasol Lee, Minkyung Kim
The spin Hall effect of light, a phenomenon characterized by the transverse and spin dependent splitting of light at an optical interface, is highly promising for collecting precise quantitative data from interfaces and stands as an appealing option for improving precision metrology. This high level of precision is attributed to the principles of weak measurement. Since its conceptual introduction
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Simultaneous thermal camouflage and radiative cooling for ultrahigh-temperature objects using inversely designed hierarchical metamaterial Nanophotonics (IF 6.5) Pub Date : 2024-07-10 Saichao Dang, Wei Yang, Jialei Zhang, Qiwen Zhan, Hong Ye
Sophisticated infrared detection technology, operating through atmospheric transmission windows (usually between 3 and 5 μm and 8–13 μm), can detect an object by capturing its emitted thermal radiation, posing a threat to the survival of targeted objects. As per Wien’s displacement law, the shift of peak wavelength towards shorter wavelengths as blackbody temperature rises, underscores the significance
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Ultra-sensitive, graphene metasurface sensor integrated with the nonradiative anapole mode for detecting and differentiating two preservatives Nanophotonics (IF 6.5) Pub Date : 2024-07-10 Gui Fang Wu, Feng Ping Yan, Xin Yan, Wei Wang, Ting Li, Zhen Hua Li, Lan Ju Liang, Rui Zhang, Fu Tong Chu, Hai Yun Yao, Meng Wang, Zi Qun Wang, Lu Wang, Xiao Fei Hu
Graphene-based metamaterial sensors are of significant research value for detecting food preservatives at low concentrations due to their extremely high sensitivity levels. In this work, we proposed and experimentally demonstrated an anapole resonance-based graphene metasurface (An-graphene-Ms) sensor with its conductivity altered by electrostatic doping effects for detecting and differentiating between
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Photonic Dirac waveguide in inhomogeneous spoof surface plasmonic metasurfaces Nanophotonics (IF 6.5) Pub Date : 2024-07-10 Yuting Yang, Juyi Zhang, Bin Yang, Shiyu Liu, Wenjie Zhang, Xiaopeng Shen, Liwei Shi, Zhi Hong Hang
The metamaterial with artificial synthetic gauge field has been proved as an excellent platform to manipulate the transport of the electromagnetic wave. Here we propose an inhomogeneous spoof surface plasmonic metasurface to construct an in-plane pseudo-magnetic field, which is generated by engineering the gradient variation of the opened Dirac cone corresponding to spatially varying mass term. The
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Demultiplexing-free ultra-compact WDM-compatible multimode optical switch assisted by mode exchanger Nanophotonics (IF 6.5) Pub Date : 2024-07-03 Siwei Liu, Xin Fu, Jiaqi Niu, Yujie Huo, Chuang Cheng, Lin Yang
Silicon-based optical switches are integral to on-chip optical interconnects, and mode-division multiplexing (MDM) technology has enabled modes to function as carriers in routing, further boosting optical switches’ link capacity. However, traditional multimode optical switches, which typically use Mach–Zehnder interferometer (MZI) structures and mode (de)multiplexers, are complex and occupy significant
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Opto-intelligence spectrometer using diffractive neural networks Nanophotonics (IF 6.5) Pub Date : 2024-07-02 Ze Wang, Hang Chen, Jianan Li, Tingfa Xu, Zejia Zhao, Zhengyang Duan, Sheng Gao, Xing Lin
Spectral reconstruction, critical for understanding sample composition, is extensively applied in fields like remote sensing, geology, and medical imaging. However, existing spectral reconstruction methods require bulky equipment or complex electronic reconstruction algorithms, which limit the system’s performance and applications. This paper presents a novel flexible all-optical opto-intelligence
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Dynamic control of the directional scattering of single Mie particle by laser induced metal insulator transitions Nanophotonics (IF 6.5) Pub Date : 2024-07-01 Yanlin Zhu, Shulei Li, Yang Zhang, Jinjing Meng, Xu Tan, Jingdong Chen, Mingcheng Panmai, Jin Xiang
Interference between the electric and magnetic dipole-induced in Mie nanostructures has been widely demonstrated to tailor the scattering field, which was commonly used in optical nano-antennas, filters, and routers. The dynamic control of scattering fields based on dielectric nanostructures is interesting for fundamental research and important for practical applications. Here, it is shown theoretically
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Nonlinear optical physics at terahertz frequency Nanophotonics (IF 6.5) Pub Date : 2024-07-01 Yao Lu, Yibo Huang, Junkai Cheng, Ruobin Ma, Xitan Xu, Yijia Zang, Qiang Wu, Jingjun Xu
Terahertz (THz) waves have exhibited promising prospects in 6G/7G communications, sensing, nondestructive detection, material modulation, and biomedical applications. With the development of high-power THz sources, more and more nonlinear optical effects at THz frequency and THz-induced nonlinear optical phenomena are investigated. These studies not only show a clear physics picture of electrons, ions
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Inverse design of color routers in CMOS image sensors: toward minimizing interpixel crosstalk Nanophotonics (IF 6.5) Pub Date : 2024-07-01 Sangbin Lee, Jaehyun Hong, Joonho Kang, Junjeong Park, Jaesung Lim, Taeho Lee, Min Seok Jang, Haejun Chung
Over the past decade, significant advancements in high-resolution imaging technology have been driven by the miniaturization of pixels within image sensors. However, this reduction in pixel size to submicrometer dimensions has led to decreased efficiency in color filters and microlens arrays. The development of color routers that operate at visible wavelengths presents a promising avenue for further
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All-optical modulator with photonic topological insulator made of metallic quantum wells Nanophotonics (IF 6.5) Pub Date : 2024-06-26 Haiteng Wang, Junru Niu, Qiaolu Chen, Sihan Zhao, Hua Shao, Yihao Yang, Hongsheng Chen, Shilong Li, Haoliang Qian
All-optical modulators hold significant prospects for future information processing technologies for they are able to process optical signals without the electro-optical convertor which limits the achievable modulation bandwidth. However, owing to the hardly-controlled optical backscattering in the commonly-used device geometries and the weak optical nonlinearities of the conventional material systems
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Multilayer all-dielectric metasurfaces expanding color gamut Nanophotonics (IF 6.5) Pub Date : 2024-06-26 Xin Gu, Jiaqi Li, Zhouxin Liang, Bo Wang, Zhaoxiang Zhu, Yujie Chen
Structural color, arising from the interaction between nanostructures and light, has experienced rapid development in recent years. However, high-order Mie resonances in dielectric materials often induce unnecessary sub-peaks, particularly at shorter wavelengths, reducing the vibrancy of colors. To address this, we have developed a multilayer dielectric metasurface based on silicon-rich silicon nitride
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Intrinsic nonlinear geometric phase in SHG from zincblende crystal symmetry media Nanophotonics (IF 6.5) Pub Date : 2024-06-26 Luca Carletti, Davide Rocco, Maria Antonietta Vincenti, Domenico de Ceglia, Costantino De Angelis
We demonstrate that AlGaAs thin films and metasurfaces generate a distinct intrinsic nonlinear geometric phase in their second harmonic signals, differing significantly from previous studies on nonlinear dielectric, plasmonic, or hybrid metasurfaces. Unlike conventional observations, our study reveals that the second harmonic phase remains unaffected by the linear optical response at both pump and
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Nonlinear photonics on integrated platforms Nanophotonics (IF 6.5) Pub Date : 2024-06-26 Wenpu Geng, Yuxi Fang, Yingning Wang, Changjing Bao, Weiwei Liu, Zhongqi Pan, Yang Yue
Nonlinear photonics has unveiled new avenues for applications in metrology, spectroscopy, and optical communications. Recently, there has been a surge of interest in integrated platforms, attributed to their fundamental benefits, including compatibility with complementary metal-oxide semiconductor (CMOS) processes, reduced power consumption, compactness, and cost-effectiveness. This paper provides
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Directionally tunable co- and counterpropagating photon pairs from a nonlinear metasurface Nanophotonics (IF 6.5) Pub Date : 2024-06-24 Maximilian A. Weissflog, Jinyong Ma, Jihua Zhang, Tongmiao Fan, Shaun Lung, Thomas Pertsch, Dragomir N. Neshev, Sina Saravi, Frank Setzpfandt, Andrey A. Sukhorukov
Nonlinear metasurfaces have recently been established as a new platform for generating photon pairs via spontaneous parametric down-conversion. While for classical harmonic generation in metasurfaces a high level of control over all degrees of freedom of light has been reached, this capability is yet to be developed for photon-pair generation. In this work, we theoretically and experimentally demonstrate
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Symmetry-breaking-induced off-resonance second-harmonic generation enhancement in asymmetric plasmonic nanoparticle dimers Nanophotonics (IF 6.5) Pub Date : 2024-06-01 Yaorong Wang, Zhiwei Peng, Yannick De Wilde, Dangyuan Lei
The linear and nonlinear optical properties of metallic nanoparticles have attracted considerable experimental and theoretical research interest. To date, most researchers have focused primarily on exploiting their plasmon excitation enhanced near-field and far-field responses and related applications in sensing, imaging, energy harvesting, conversion, and storage. Among numerous plasmonic structures
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Aberration-corrected hybrid metalens for longwave infrared thermal imaging Nanophotonics (IF 6.5) Pub Date : 2024-05-31 Tie Hu, Liqing Wen, Haowei Li, Shengqi Wang, Rui Xia, Zihan Mei, Zhenyu Yang, Ming Zhao
Wide-angle metalenses in the longwave infrared have shown great advantages over the traditional refractive doublets or triplets, due to light weight, CMOS compatibility, and low cost. However, previous endeavors have been plagued by challenges including a narrow waveband, large F-number, distortion, and spherical aberration. To address these problems, this study introduces two dispersive metasurfaces
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Quantitative measurement of spatial distribution of effective refractive index induced by local electron concentration at a nano slit Nanophotonics (IF 6.5) Pub Date : 2024-05-31 Dae Hee Kim, Young Ho Park, Jun Hyung Park, Duy-Anh Nguyen, Hongki Yoo, Seungchel Kim, Young-Jin Kim
Surface plasmon polaritons (SPPs) have found their key applications in high-sensitivity biomolecular detection and integrated photonic devices for optical communication via light manipulation at nanostructures. Despite their broad utility, SPPs are known to be accompanied by other complex near-field propagation modes, such as quasi-cylindrical waves (QCWs) and composite diffracted evanescent waves
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Strong coupling spontaneous emission interference near a graphene nanodisk Nanophotonics (IF 6.5) Pub Date : 2024-05-31 Ioannis Thanopulos, Vasilios Karanikolas, Emmanuel Paspalakis
In this work, we analyze the spontaneous emission dynamics of a V-type quantum emitter near a graphene nanodisk based on the combination of electromagnetic and quantum dynamical calculations. The presence of the graphene nanodisk gives strong anisotropy to the Purcell factors of the quantum emitter, leading to interference effects in spontaneous emission appearing as coupling between the emitter’s
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Adaptive fabric with emissivity regulation for thermal management of humans Nanophotonics (IF 6.5) Pub Date : 2024-05-31 Xiansheng Li, Meiling Liu, Ken Chen, Lanxin Li, Gang Pei, Bin Zhao
The heat generation of the human body dramatically varies between resting and active status, so dynamic heat dissipation is required to ensure optimal thermal comfort. Herein, we propose a spectrally self-adaptive smart fabric (SSSF) by covering polyester fabric with silver nanowires, which autonomously adjusts its emissivity in response to the body’s movement status from dry to wet states. During
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Scaling up multispectral color filters with binary lithography and reflow (BLR) Nanophotonics (IF 6.5) Pub Date : 2024-05-31 Md Abdur Rahman, Soroosh Daqiqeh Rezaei, Deepshikha Arora, Hao Wang, Tomohiro Mori, Ser Chern Chia, John You En Chan, Parvathi Nair Suseela Nair, Siam Uddin, Cheng-Feng Pan, Wang Zhang, Hongtao Wang, Zheng Ruitao, Lim Sin Heng, Joel K. W. Yang
Efforts to increase the number of filters are driven by the demand for miniaturized spectrometers and multispectral imaging. However, processes that rely on sequential fabrication of each filter are cost ineffective. Herein, we introduce an approach to produce at least 16 distinct filters based on a single low-resolution lithographic step with minimum feature size of 0.6 μm. Distinct from grayscale
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Enhancement of third-harmonic generation in all-dielectric kite-shaped metasurfaces driven by quasi-bound states in the continuum Nanophotonics (IF 6.5) Pub Date : 2024-05-31 Hui-Hsin Hsiao, Jou-Chun Hsieh, Ai-Yin Liu, Kuang-I Lin, Yi-Chien Hsu
We develop a new all-dielectric metasurface for designing high quality-factor (Q-factor) quasi-bound states in the continuum (quasi-BICs) using asymmetry kite-shaped nanopillar arrays. The Q-factors of quasi-BICs follow the quadratic dependence on the geometry asymmetry, and meanwhile their resonant spectral profiles can be readily tuned between Fano and Lorentzian lineshapes through the interplay
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Thermo-responsive circularly polarized luminescence from carbon quantum dots in a cellulose-based chiral nematic template Nanophotonics (IF 6.5) Pub Date : 2024-05-31 Haidong Shi, Jiaxin Zhu, Yaxuan Deng, Yanling Yang, Changxing Wang, Yihan Liu, Wanlong Zhang, Dan Luo, Da Chen, Yue Shi
Circularly polarized light emitting active materials are of great interest, and the convenient tuning of the circularly polarized luminescence (CPL) remains a significant challenge. Integrating fluorescent materials into chiral photonic crystals to achieve tunable CPL is a promising approach, allowing efficient manipulation of CPL by adjusting the photonic band gap (PBG). We combined carbon quantum
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Phase-matched third-harmonic generation in silicon nitride waveguides Nanophotonics (IF 6.5) Pub Date : 2024-05-30 Surendar Vijayakumar, Kaustubh Vyas, Daniel H. G. Espinosa, Orad Reshef, Meiting Song, Kashif Masud Awan, Saumya Choudhary, Jaime Cardenas, Robert W. Boyd, Ksenia Dolgaleva
Third-harmonic generation (THG) in silicon nitride waveguides is an ideal source of coherent visible light, suited for ultrafast pulse characterization, telecom signal monitoring and self-referenced comb generation due to its relatively large nonlinear susceptibility and CMOS compatibility. We demonstrate third-harmonic generation in silicon nitride waveguides where a fundamental transverse mode at
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High-efficiency nonlinear frequency conversion enabled by optimizing the ferroelectric domain structure in x-cut LNOI ridge waveguide Nanophotonics (IF 6.5) Pub Date : 2024-05-28 Yawen Su, Xinyu Zhang, Haiwei Chen, Shifeng Li, Jianan Ma, Wei Li, Yunfei Niu, Qi Qin, Shaoguang Yang, Yu Deng, Yong Zhang, Xiaopeng Hu, Shining Zhu
Photonic devices based on ferroelectric domain engineering in thin film lithium niobate are key components for both classical and quantum information processing. Periodic poling of ridge waveguide can avoid the selective etching effect of lithium niobate, however, the fabrication of high-quality ferroelectric domain is still a challenge. In this work, we optimized the applied electric field distribution
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Lithium niobate on insulator – fundamental opto-electronic properties and photonic device prospects Nanophotonics (IF 6.5) Pub Date : 2024-05-28 Bin You, Shuangxiu Yuan, Yuan Tian, Haisu Zhang, Xiaolong Zhu, N. Asger Mortensen, Ya Cheng
Lithium niobate on insulator (LNOI) combines a variety of optoelectronic properties and can meet practical performance requirements that are uncommon in optoelectronic materials. This review introduces the fundamentals and the photonic device concepts that arise from the LNOI materials platform. Firstly, the nonlinear optical response of LNOI is presented, including birefringent phase matching (BPM)
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Deep learning for optical tweezers Nanophotonics (IF 6.5) Pub Date : 2024-05-22 Antonio Ciarlo, David Bronte Ciriza, Martin Selin, Onofrio M. Maragò, Antonio Sasso, Giuseppe Pesce, Giovanni Volpe, Mattias Goksör
Optical tweezers exploit light–matter interactions to trap particles ranging from single atoms to micrometer-sized eukaryotic cells. For this reason, optical tweezers are a ubiquitous tool in physics, biology, and nanotechnology. Recently, the use of deep learning has started to enhance optical tweezers by improving their design, calibration, and real-time control as well as the tracking and analysis
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Miniature spectrometer based on graded bandgap perovskite filter Nanophotonics (IF 6.5) Pub Date : 2024-05-21 Peihan Sun, Xiangmin Hu, Shuhao Yuan, Yanyan Peng, Tingfa Xu, Haizheng Zhong
Miniature spectrometer is powerful tool for scientific research and industrial inspection. Here, we report the fabrication of graded perovskite filters with tunable bandgap and their application in constructing miniature spectrometer. The graded perovskite filters were fabricated using a Finkelstein reaction between in-situ formed halogen ion with a preformed MAPbX3 film. The graded bandgap of perovskite
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Multispectral metal-based electro-optical metadevices with infrared reversible tunability and microwave scattering reduction Nanophotonics (IF 6.5) Pub Date : 2024-05-21 Zhen Meng, Dongqing Liu, Yongqiang Pang, Jiafu Wang, Tianwen Liu, Yan Jia, Haifeng Cheng
The demand for advanced camouflage technology is increasing in modern military warfare. Multispectral compatibility and adaptive capabilities are increasingly desired features in camouflage materials. However, due to the strong wavelength dependence and limited tunability of electromagnetic wave responses, achieving simultaneous multispectral compatibility and adaptive capability in a single structure
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Capillary-assisted flat-field formation: a platform for advancing nanoparticle tracking analysis in an integrated on-chip optofluidic environment Nanophotonics (IF 6.5) Pub Date : 2024-05-20 Fengji Gui, Ronny Foerster, Torsten Wieduwilt, Matthias Zeisberger, Jisoo Kim, Markus A. Schmidt
Here, we present the concept of flat-field capillary-assisted nanoparticle tracking analysis for the characterization of fast diffusing nano-objects. By combining diffusion confinement and spatially invariant illumination, i.e., flat-fields, within a fiber-interfaced on-chip environment, ultra-long trajectories of fast diffusing objects within large microchannels have been measured via diffraction-limited
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Enhancing metasurface fabricability through minimum feature size enforcement Nanophotonics (IF 6.5) Pub Date : 2024-05-20 Pavel Terekhov, Shengyuan Chang, Md Tarek Rahman, Sadman Shafi, Hyun-Ju Ahn, Linghan Zhao, Xingjie Ni
The metasurfaces have shown great potential for miniaturizing conventional optics while offering extended flexibility. Recently, there has been considerable interest in using algorithms to generate meta-atom shapes for these metasurfaces, as they offer vast design freedom and not biased by the human intuition. However, these complex designs significantly increase the difficulty of fabrication. To address
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Frequency down-conversion of terahertz waves at optically induced temporal boundaries in GaAs waveguides Nanophotonics (IF 6.5) Pub Date : 2024-05-18 Keisuke Takano, Satoko Uchiyama, Shintaro Nagase, Yuka Tsuchimoto, Toshihiro Nakanishi, Yosuke Nakata, Joel Pérez-Urquizo, Julien Madéo, Keshav M. Dani, Fumiaki Miyamaru
In this study, the frequency down-conversion of terahertz waves is analytically and experimentally demonstrated at the temporal boundaries within a GaAs waveguide. The temporal boundary is established by photoexciting the top surface of the waveguide, thereby instantaneously increasing its electrical conductivity. This photoexcited waveguide supports a transverse electromagnetic (TEM) mode with a frequency
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Guiding light with surface exciton–polaritons in atomically thin superlattices Nanophotonics (IF 6.5) Pub Date : 2024-05-17 Sara A. Elrafei, T. V. Raziman, Sandra de Vega, F. Javier García de Abajo, Alberto G. Curto
Two-dimensional materials give access to the ultimate physical limits of photonics with appealing properties for ultracompact optical components such as waveguides and modulators. Specifically, in monolayer semiconductors, a strong excitonic resonance leads to a sharp oscillation in permittivity from positive to even negative values. This extreme optical response enables surface exciton–polaritons
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Visible-infrared compatible and independent camouflage with multicolor patterns and tunable emissivity Nanophotonics (IF 6.5) Pub Date : 2024-05-16 Yuetang Wang, Liming Yuan, Yong Mao, Cheng Huang, Jingkai Huang, Xiaoliang Ma, Yuzhuo Qi, Yang Liu, He Lin, Xiangang Luo
With the rapid development and wide application of visible (VIS) and infrared (IR) detections, it is necessary to explore visible-infrared (VIS-IR) compatible camouflage. Here, we report a VIS-IR compatible and independent camouflage device which is composed of the upper IR-transparent VIS-color-patterned layer and the lower electrochromic IR layer. The upper layer has amorphous photonic structure
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Noninvasive inset-integrated meta-atom for achieving single-layer metasurface simultaneously with coded microwave reflectivity and digitalized infrared emissivity Nanophotonics (IF 6.5) Pub Date : 2024-05-16 Hui-Ting Sun, Jun Wang, Rui-Chao Zhu, Zun-Tian Chu, Xin-Min Fu, Yu-Xiang Jia, Yi-Na Cui, Ya-Juan Han, Tian-Shuo Qiu, Sai Sui, Jia-Fu Wang, Shao-Bo Qu
With the rapid improvement of equipment integration technology, multi-spectrum detectors are integrated into compact volumes and widely used for object detection. Confront with this challenge, it is essential to propose a strategy to design a single-layer metasurface with multi-spectrum responses in microwave and infrared ranges. In this work, we proposed a method of designing meta-atoms, which is
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Non-Hermitian polariton–photon coupling in a perovskite open microcavity Nanophotonics (IF 6.5) Pub Date : 2024-05-15 Mateusz Kędziora, Mateusz Król, Piotr Kapuściński, Helgi Sigurðsson, Rafał Mazur, Wiktor Piecek, Jacek Szczytko, Michał Matuszewski, Andrzej Opala, Barbara Piętka
Exploring the non-Hermitian properties of semiconductor materials for optical applications is at the forefront of photonic research. However, the selection of appropriate systems to implement such photonic devices remains a topic of debate. In this work, we demonstrate that a perovskite crystal, characterized by its easy and low-cost manufacturing, when placed between two distributed Bragg reflectors
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Nanophotonic route to control electron behaviors in 2D materials Nanophotonics (IF 6.5) Pub Date : 2024-05-10 DongJun Kang, Chibuzo Onwukaeme, KiJeong Park, KyeongPyo Jeon, Han-Youl Ryu, SeokJae Yoo
Two-dimensional (2D) Dirac materials, e.g., graphene and transition metal dichalcogenides (TMDs), are one-atom-thick monolayers whose electronic behaviors are described by the Dirac equation. These materials serve not only as test beds for novel quantum physics but also as promising constituents for nanophotonic devices. This review provides a brief overview of the recent effort to control Dirac electron
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Casimir interaction driven by hyperbolic polaritons Nanophotonics (IF 6.5) Pub Date : 2024-05-09 Yang Hu, Xiaohu Wu, Haotuo Liu, Xiuquan Huang
Casimir interaction is an intriguing phenomenon that is induced by electromagnetic quantum fluctuations, which dominates the interaction between microstructures at small separations and is essential for micro- and nano-electromechanical systems (MEMS and NEMS). However, Casimir interaction driven by hyperbolic polaritons remains an unexplored frontier. In this work, we investigate the Casimir interaction
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Dyakonov surface waves in dielectric crystals with negative anisotropy Nanophotonics (IF 6.5) Pub Date : 2024-05-09 Dmitry A. Chermoshentsev, Evgeny V. Anikin, Ilia M. Fradkin, Mikhail S. Sidorenko, Aleksandra A. Dudnikova, Aleksandr S. Kalganov, Mikhail F. Limonov, Nikolay A. Gippius, Sergey A. Dyakov
Since the initial discovery of Dyakonov surface waves at a flat infinite interface of two dielectrics, at least one of which is positively anisotropic, extensive research has been conducted towards their theoretical and experimental studies in materials with positive anisotropy. The potential applications of these waves were initially limited due to the stringent conditions for their existence and
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Reconfigurable quantum photonic circuits based on quantum dots Nanophotonics (IF 6.5) Pub Date : 2024-05-08 Adam McCaw, Jacob Ewaniuk, Bhavin J. Shastri, Nir Rotenberg
Quantum photonic integrated circuits, composed of linear-optical elements, offer an efficient way for encoding and processing quantum information on-chip. At their core, these circuits rely on reconfigurable phase shifters, typically constructed from classical components such as thermo- or electro-optical materials, while quantum solid-state emitters such as quantum dots are limited to acting as single-photon
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Comment on “Fast and accurate electromagnetic field calculation for substrate-supported metasurfaces using the discrete dipole approximation” Nanophotonics (IF 6.5) Pub Date : 2024-05-07 Patrick C. Chaumet
The article entitled “Fast and accurate electromagnetic field calculation for substrate-supported metasurfaces using the discrete dipole approximation (DDA)” written by W. Liu and E. McLeod presents a method for computing the Green function in presence of a substrate or multilayer in an efficient way. Unfortunately, the proposed method has been known for more than twenty years and significantly ameliorated
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Metatronics-inspired high-selectivity metasurface filter Nanophotonics (IF 6.5) Pub Date : 2024-04-25 Qihao Lv, Xu Qin, Mingzhe Hu, Peihang Li, Yongjian Zhang, Yue Li
Metatronic circuits extend the concept of subwavelength-scaled lumped circuitry from electronics to optics and photonics, providing a distinctive design paradigm for versatile optical nanocircuits. Here, based on the design of optical nanocircuits using metatronics concept, we introduce a general approach for dispersion synthesis with metasurface to achieve high-selectivity filtering response. We theoretically
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Compact biologically inspired camera with computational compound eye Nanophotonics (IF 6.5) Pub Date : 2024-04-23 Shu-Bin Liu, Xu-Ning Liu, Wei-Jie Fan, Meng-Xuan Zhang, Lei Li
The growing interests have been witnessed in the evolution and improvement of artificial compound eyes (CE) inspired by arthropods. However, the existing CE cameras are suffering from a defocusing problem due to the incompatibility with commercial CMOS cameras. Inspired by the CEs of South American Shrimps, we report a compact biologically inspired camera that enables wide-field-of-view (FOV), high-resolution
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Coherent light-emitting metasurfaces based on bound states in the continuum Nanophotonics (IF 6.5) Pub Date : 2024-04-22 Soheil Farazi, Srinivas Tadigadapa
An emergent need exists for solid state tunable coherent light emitters in the mid-infrared range for spectroscopy, sensing, and communication applications where current light sources are dominated by spontaneous emitters. This paper demonstrates a distinct class of coherent thermal emitters operating in the mid-infrared wavelength regime. The structure of the light source consists of a dielectric
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Intense second-harmonic generation in two-dimensional PtSe2 Nanophotonics (IF 6.5) Pub Date : 2024-04-20 Lingrui Chu, Ziqi Li, Han Zhu, Hengyue Lv, Feng Chen
Platinum diselenide (PtSe2), classified as a noble metal dichalcogenide, has garnered substantial interest owing to its layer-dependent band structure, remarkable air-stability, and high charge-carrier mobilities. These properties make it highly promising for a wide array of applications in next-generation electronic and optoelectronic devices, as well as sensors. Additionally, two-dimensional (2D)
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Continuously tuneable single electrode pair liquid crystal optical vortex generators Nanophotonics (IF 6.5) Pub Date : 2024-04-18 Camron Nourshargh, Alec Xu, Patrick S. Salter, Martin J. Booth, Steve J. Elston, Stephen M. Morris
In this work, we demonstrate the use of two-photon polymerization direct laser writing in the production of continuously tuneable optical vortex beam (OV) generators in a liquid crystal (LC) layer sandwiched between glass substrates. Results are presented that show how an OV generator can be inscribed into a 20 μm-thick LC layer and how the order of the OV beam can be tuned with the application of
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Tunable high-order harmonic generation in GeSbTe nano-films Nanophotonics (IF 6.5) Pub Date : 2024-04-17 Viacheslav Korolev, Artem D. Sinelnik, Mikhail V. Rybin, Petr Lazarenko, Olga M. Kushchenko, Victoria Glukhenkaya, Sergey Kozyukhin, Michael Zuerch, Christian Spielmann, Thomas Pertsch, Isabelle Staude, Daniil Kartashov
High-order harmonic generation (HHG) in solids opens new frontiers in ultrafast spectroscopy of carrier and field dynamics in condensed matter, picometer resolution structural lattice characterization and designing compact platforms for attosecond pulse sources. Nanoscale structuring of solid surfaces provides a powerful tool for controlling the spatial characteristics and efficiency of the harmonic
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Silicon-based planar devices for narrow-band near-infrared photodetection using Tamm plasmons Nanophotonics (IF 6.5) Pub Date : 2024-04-17 Wenyue Liang, Yajin Dong, Long Wen, Yongbing Long
Designing efficient narrow-band near-infrared photodetectors integrated on silicon for telecommunications remains a significant challenge in silicon photonics. This paper proposes a novel silicon-based hot-electron photodetector employing Tamm plasmons (Si-based TP-HE PD) for narrow-band near-infrared photodetection. The device combines a one-dimensional photonic crystal (1DPC) structure, an Au layer
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Far-field mapping and efficient beaming of second harmonic by a plasmonic metagrating Nanophotonics (IF 6.5) Pub Date : 2024-04-16 Augustin Verneuil, Agostino Di Francescantonio, Attilio Zilli, Julien Proust, Jérémie Béal, Daniela Petti, Marco Finazzi, Michele Celebrano, Anne-Laure Baudrion
We study numerically and experimentally the second-harmonic generation (SHG) from rectangular metagratings of V-shaped gold nanoantennas. We show that by carefully engineering the array pitch to steer the diffraction orders toward the single antenna emission, the extracted signal is maximized. This enhancement is attributed to the angular overlap between the radiation pattern and array factor and is
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Emission engineering in microdisk lasers via direct integration of meta-micromirrors Nanophotonics (IF 6.5) Pub Date : 2024-04-16 Aran Yu, Moohyuk Kim, Da In Song, Byoung Jun Park, Hae Rin Jeong, Byeong Uk You, Seung-Woo Jeon, Sang-Wook Han, Myung-Ki Kim
Despite their excellent performance and versatility, the efficient integration of small lasers with other optical devices has long been hindered by their broad emission divergence. In this study, we introduce a novel approach for emission engineering in microdisk lasers, significantly enhancing their vertical emission output by directly integrating specially designed reflective metalenses, referred
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Extracting kinetic information from short-time trajectories: relaxation and disorder of lossy cavity polaritons Nanophotonics (IF 6.5) Pub Date : 2024-04-16 Andrew Wu, Javier Cerrillo, Jianshu Cao
The emerging field of molecular cavity polaritons has stimulated a surge of experimental and theoretical activities and presents a unique opportunity to develop the many-body simulation methodology. This paper presents a numerical scheme for the extraction of key kinetic information of lossy cavity polaritons based on the transfer tensor method (TTM). Steady state, relaxation timescales, and oscillatory
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Multistability manipulation by reinforcement learning algorithm inside mode-locked fiber laser Nanophotonics (IF 6.5) Pub Date : 2024-04-15 Alexey Kokhanovskiy, Evgeny Kuprikov, Kirill Serebrennikov, Aram Mkrtchyan, Ayvaz Davletkhanov, Alexey Bunkov, Dmitry Krasnikov, Mikhail Shashkov, Albert Nasibulin, Yuriy Gladush
Fiber mode-locked lasers are nonlinear optical systems that provide ultrashort pulses at high repetition rates. However, adjusting the cavity parameters is often a challenging task due to the intrinsic multistability of a laser system. Depending on the adjustment of the cavity parameters, the optical output may vary significantly, including Q-switching, single and multipulse, and harmonic mode-locked
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Nanolasers Nanophotonics (IF 6.5) Pub Date : 2024-04-13 Thomas Charles Ellis, Sahand Eslami, Stefano Palomba
As the demand for smaller and more compact lasers increases, the physical dimensions of laser diodes are already at the diffraction limit, which impairs this miniaturization trend and limits direct laser integration into photonic and especially nanophotonic circuits. However, plasmonics has allowed the development of a novel class of lasers that can be manufactured without being limited by diffraction
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Strong coupling in molecular systems: a simple predictor employing routine optical measurements Nanophotonics (IF 6.5) Pub Date : 2024-04-13 Marie S. Rider, Edwin C. Johnson, Demetris Bates, William P. Wardley, Robert H. Gordon, Robert D. J. Oliver, Steven P. Armes, Graham J. Leggett, William L. Barnes
We provide a simple method that enables readily acquired experimental data to be used to predict whether or not a candidate molecular material may exhibit strong coupling. Specifically, we explore the relationship between the hybrid molecular/photonic (polaritonic) states and the bulk optical response of the molecular material. For a given material, this approach enables a prediction of the maximum