Characteristics of 850 nm Liquid Crystal Tunable VCSEL with Polarization Stability and Wide Tuning Range

被引：0
|
作者：
Wang X.-L. [1 ]
Zou Y.-G. [1 ]
Hao Y.-Q. [1 ]
Ma X.-H. [1 ]
Liu G.-J. [1 ]
机构：
[1] Changchun University of Science and Technology, Changchun
来源：
Zou, Yong-Gang (zouyg@cust.edu.cn); Liu, Guo-Jun (gjliu626@126.com) | 1600年 / Editorial Office of Chinese Optics卷 / 41期
基金：
中国国家自然科学基金;
关键词：
Liquid crystal; Polarization stability; Vertical-cavity surface-emitting laser(VCSEL); Wavelength tuning;
D O I：
10.37188/CJL.20200175
中图分类号：
学科分类号：
摘要：
In this paper, we designed an 850 nm liquid crystal tunable vertical-cavity surface-emitting laser(VCSEL) structure with internal coupling layer to optimize the wavelength tuning range and polarization stability of the device. The resonance wavelength and the corresponding threshold gain of the two polarization modes are analyzed under different liquid crystal layer thicknesses, and the effect of liquid crystal thickness on the tunable VCSEL polarization mode and wavelength tuning is studied. In addition, we add a coupling layer structure between the semiconductor cavity and the liquid crystal cavity, which can make the liquid crystal tunable VCSEL structure realize stable polarization mode and wider wavelength tuning range. The results show that the coupling layer structure can effectively increase the tuning range of liquid crystal tunable VCSEL to 41.1 nm. At the same time, because the polarization mode of o-beam is always suppressed, the liquid crystal tunable VCSEL can achieve stable single polarization mode output in the continuous wavelength tuning process. © 2020, Science Press. All right reserved.
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页码：1287 / 1293
页数：6
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