A Model of Dual Fabry-Perot Etalon-Based External-Cavity Tunable Laser Us...
Internal motion within pulsating pure-quartic soliton molecules in a fibe...
Enhanced light emission of germanium light-emitting-diode on 150 mm germa...
The Fabrication of GaN Nanostructures Using Cost-Effective Methods for Ap...
Negative-to-Positive Tunnel Magnetoresistance in van der Waals Fe3GeTe2/C...
Quantum Light Source Based on Semiconductor Quantum Dots: A Review
A High-Reliability RF MEMS Metal-Contact Switch Based on Al-Sc Alloy
Development of a Mode-Locked Fiber Laser Utilizing a Niobium Diselenide S...
Development of Multiple Fano-Resonance-Based All-Dielectric Metastructure...
Traffic Vibration Signal Analysis of DAS Fiber Optic Cables with Differen...
官方微信
友情链接

Exceptional points in Fabry-Perot cavities with spatially distributed gain and loss

2021-04-29

 

Author(s): Yang, YD (Yang, Yue-De); Meng, XH (Meng, Xiang-Hui); Hao, YZ (Hao, You-Zeng); Ma, CG (Ma, Chun-Guang); Xia, JL (Xia, Jin-Long); Huang, YZ (Huang, Yong-Zhen)

Source: JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS Volume: 38 Issue: 4 Pages: 1205-1213 DOI: 10.1364/JOSAB.420383 Published: APR 1 2021

Abstract: We have studied the optical modes in Fabry-Perot (FP) cavities with spatially distributed gain and loss. Exceptional points (EPs) are observed not only in the parity-time (PT) symmetric FP cavity but also in these cavities with specially designed gain-loss distributions. Such phenomena result from the interference between the reflected and transmitted waves at the interface of the gain-loss regions, which cannot be explained by the dual-mode coupling theory that is widely used in the description of PT-symmetric coupled-cavity systems. The optical waves in the FP cavity traveling in the forward and backward directions have extremely different intensities at the gain-loss interface, and hence the interference will greatly affect the transmission of the weaker one and lead to unique mode properties such as EPs in the FP cavity. The mode properties are sensitive to the gain-loss distribution, but the split of modal loss is a universal phenomenon and can be used for lasing mode control. (C) 2021 Optical Society of America

Accession Number: WOS:000636817900023

ISSN: 0740-3224

eISSN: 1520-8540

Full Text: https://www.osapublishing.org/josab/fulltext.cfm?uri=josab-38-4-1205&id=449317



关于我们
下载视频观看
联系方式
通信地址

北京市海淀区清华东路甲35号(林大北路中段) 北京912信箱 (100083)

电话

010-82304210/010-82305052(传真)

E-mail

semi@semi.ac.cn

交通地图
版权所有 中国科学院半导体研究所

备案号:京ICP备05085259-1号 京公网安备110402500052 中国科学院半导体所声明