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Few-Layer Bismuthene for Coexistence of Harmonic and Dual Wavelength in a Mode-Locked Fiber Laser.
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2020-06-15 , DOI: 10.1021/acsami.0c05325 Penglai Guo 1 , Xiaohui Li 1 , Tianci Feng 1 , Ying Zhang 1 , Wenxiong Xu 2
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2020-06-15 , DOI: 10.1021/acsami.0c05325 Penglai Guo 1 , Xiaohui Li 1 , Tianci Feng 1 , Ying Zhang 1 , Wenxiong Xu 2
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Bismuthene, as a novel two-dimensional (2D) material, has attracted extensive attention because of its outstanding properties including narrow band gap, stability at room temperature, nonlinear optical transmission, and so on. In this paper, the physical characteristic, nonlinear optical response, and ultrafast photonics application of few-layer bismuthene are studied experimentally. By the balanced twin-detector measurement method, the saturable absorption property of few-layer bismuthene with a modulation depth of 2.5% and saturable intensity of 110 MW/cm2 at the optical communication band (C-band) is illustrated. Dependent on a few-layer bismuthene saturable absorber, an all-fiber ultrashort pulse laser is fabricated and the proposed fiber laser can operate with coexistence of harmonic mode-locking and dual-wavelength mode-locking. The different laser generations of harmonic and dual wavelength depend on the saturable absorption of few-layer bismuthene, the suitable birefringence and nonlinearity strength in the laser cavity. The results suggest that the ultrashort pulse laser obtained based on few-layer bismuthene could be applied to the field of pump–probe experiments and tunable terahertz radiation generation potentially.
中文翻译：
锁模光纤激光器中谐波和双波长共存的少量铋。
铋作为一种新颖的二维（2D）材料，由于其出色的性能包括窄的带隙，室温下的稳定性，非线性光学传输等而受到了广泛的关注。本文通过实验研究了多层铋的物理特性，非线性光学响应和超快光子学应用。通过平衡双探测器测量方法，调制深度为2.5％且饱和强度为110 MW / cm 2的几层铋的饱和吸收特性示出了在光通信频带（C-频带）的频率。依靠几层铋可饱和吸收体，制造了一种全光纤超短脉冲激光器，所提出的光纤激光器可以同时存在谐波锁模和双波长锁模。谐波和双波长激光的不同产生取决于几层铋的饱和吸收，激光腔中合适的双折射和非线性强度。结果表明，基于几层铋获得的超短脉冲激光可以应用于泵浦探针实验和可调谐太赫兹辐射的产生领域。
更新日期：2020-07-15
中文翻译：
锁模光纤激光器中谐波和双波长共存的少量铋。
铋作为一种新颖的二维（2D）材料，由于其出色的性能包括窄的带隙，室温下的稳定性，非线性光学传输等而受到了广泛的关注。本文通过实验研究了多层铋的物理特性，非线性光学响应和超快光子学应用。通过平衡双探测器测量方法，调制深度为2.5％且饱和强度为110 MW / cm 2的几层铋的饱和吸收特性示出了在光通信频带（C-频带）的频率。依靠几层铋可饱和吸收体，制造了一种全光纤超短脉冲激光器，所提出的光纤激光器可以同时存在谐波锁模和双波长锁模。谐波和双波长激光的不同产生取决于几层铋的饱和吸收，激光腔中合适的双折射和非线性强度。结果表明，基于几层铋获得的超短脉冲激光可以应用于泵浦探针实验和可调谐太赫兹辐射的产生领域。
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