关键词: 1550 nm垂直腔面发射激光器/
自旋反转模型/
特征参量/
温度变化
English Abstract
Temperature dependence of characteristic parameters of 1550 nm vertical-cavity surface-emitting laser
Ma Ling-Hua1,Xia Guang-Qiong1,
Chen Jian-Jun2,
Wu Zheng-Mao1
1.School of Physical Science and Technology, Southwest University, Chongqing 400715, China;
2.School of Medical Engineering Technology, Xinjiang Medical University, Urumqi 830011, China
Fund Project:Project supported by the National Natural Science Foundation of China (Grant Nos. 61475127, 61575163, 61775184, 31760269, 61875167).Received Date:30 March 2018
Accepted Date:14 July 2018
Published Online:05 November 2018
Abstract:Compared with conventional edge-emitting semiconductor lasers, vertical-cavity surface-emitting lasers (VCSELs) exhibit many advantages such as low power consumption, low threshold current, single longitudinal-mode operation, circular output beam with narrow divergence, on-wafer testing capability, high bandwidth modulation, low cost and easy large-scale integration into two-dimensional arrays, etc. VCSELs have been widely adopted in various applications such as optical communication, optical storage, parallel optical links, etc. At the same time, the rich dynamic characteristics of VCSELs have always been one of the frontier topics in the field of laser research, and many theoretically and experimentally investigated results have been reported. For theoretically investigating the dynamical characteristics of VCSELs, the spin-flip model (SFM) is one of most commonly and effectively used methods. In order to accurately predict the nonlinear dynamical performance of a 1550 nm-VCSEL, six characteristic parameters included in the rate equations of the SFM need to be given accurately. The six characteristic parameters are the decay rate of field k, the decay rate of total carrier population N, the linear anisotropies representing dichroism a, the linear anisotropies representing birefringence p, the spin-flip rate s, and the linewidth enhancement factor . In this work, through experimentally analyzing the output performances of a 1550 nm-VCSEL under free-running and parallel polarized optical injection, such six characteristic parameters included in the SFM are extracted first in the case that the temperature of the VCSEL is set to be 20.00℃. Furthermore, through gradually increasing the temperature of the 1550 nm-VCSEL from 10.00℃ to 30.00℃, the dependence of the six characteristic parameters on the temperature of the 1550 nm-VCSEL is investigated emphatically. The results show that with the increase of temperature of the 1550 nm-VCSEL, the linear anisotropy representing birefringence p behaves as an increasing trend, and the linewidth enhancement factor shows a decreasing trend. However, the other four characteristic parameters present complex varying trends with the increase of the temperature of the 1550 nm-VCSEL. The research in this paper is helpful in accurately understanding and controlling the dynamical characteristics of the VCSEL, and we hope that it can give a guidance for practical applications.
Keywords: 1550 nm vertical-cavity surface-emitting lasers/
spin-flip model/
characteristic parameters/
temperature variation
