Ultranarrow and Wavelength-Tunable Thermal Emission in a Hybrid Metal–Optical Tamm State Structure,ACS Photonics

当前位置： X-MOL 学术 › ACS Photonics › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Ultranarrow and Wavelength-Tunable Thermal Emission in a Hybrid Metal–Optical Tamm State Structure
ACS Photonics ( IF 6.5 ) Pub Date : 2020-05-19 , DOI: 10.1021/acsphotonics.0c00439
Zhiyu Wang ₁ , J. Kenji Clark ₁ , Ya-Lun Ho ₁ , Sebastian Volz , Hirofumi Daiguji ₁ , Jean-Jacques Delaunay ₁

Affiliation

Spectral selective thermal emitters are promising technological components due to their efficiency, large range of available emission wavelengths, simplicity, and long lifetime. Despite intensive effort into narrowband thermal emitters using surface plasmon polaritons, surface phonon polaritons, and Tamm plasmons, material losses have limited the potential quality factors, with the highest reported value being 200. Here, by combining a metallic mirror and an optical Tamm state structure, we propose a hybrid structure that realizes narrowband and wavelength-tunable thermal emission. In the proposed structure, large energy can be stored between the lossless DBRs (SiO₂/Ge), thus, drastically reducing metal losses. The metallic mirror is set at the bottom of the proposed structure to reduce the transmission losses and guarantee a large absorption/emission. This metal–optical Tamm state structure achieves experimentally a thermal emittance peak with a quality factor of over 750 at a wavelength of around 4.5 μm. Moreover, taking advantage of the temperature sensitivity of Ge, the thermal emission wavelength can be tuned by adjusting the operating temperature between 100 and 150 °C. Both the high-quality factor and the wavelength-tunable properties demonstrate its suitability as a practical narrowband light source.

中文翻译：

金属-光学Tamm混合态结构中的可窄波和波长可调的热发射

光谱选择性热辐射器因其效率高，可用发射波长范围大，简单且使用寿命长而成为有前途的技术组件。尽管使用表面等离激元极化子，表面声子极化子和Tamm等离激元对窄带热辐射器进行了大量努力，但材料损失限制了潜在的品质因数，最高报道值为200。这里，通过结合金属镜和光学Tamm态结构，我们提出了一种混合结构，可实现窄带和波长可调的热发射。在提出的结构中，可以在无损DBR（SiO ₂/ Ge），从而大大减少了金属损失。金属镜设置在建议结构的底部，以减少传输损耗并确保大的吸收/发射。这种金属金属的Tamm态结构可以在4.5μm的波长处通过实验获得一个超过750的品质因数的热发射峰。此外，利用Ge的温度敏感性，可以通过在100到150°C之间调节工作温度来调节热辐射波长。高质量因数和波长可调特性都证明了其作为实用的窄带光源的适用性。

更新日期：2020-05-19

点击分享查看原文

点击收藏

阅读更多本刊新发论文本刊介绍/投稿指南