Fig. 1. (a) The spectra of VCSEL at different temperatures with direct-current supply; (b) the variation of the center wavelength at different temperatures with direct current.(a)不同温度下直流驱动垂直腔面发射激光器光谱; (b)直流驱动下激光器发光光谱的中心波长随温度变化情况

Fig. 2. Schematic diagram of cavity mode and spectrum of VCSEL.室温条件下的增益谱线与腔膜模式匹配示意图

Fig. 3. The variation of spectral parameters at different temperatures with direct current. (a) The spectrum width varying with temperature; (b) the intensity varying with temperature.直流驱动下激光器发光光谱随温度的变化　(a) 激光光谱宽度随温度变化情况; (b) 激光强度随测试温度的变化

Fig. 4. The result of the VCSEL driven by pulse current with 10% pulse duty cycle at different temperatures. (a) The lasing spectrum at 295 K; (b) the lasing spectrumat at 25 K; (c) the relationship between the center wavelength and temperature; (d) the relationship between the spectral width and temperature.不同温度下10%占空比脉冲电流驱动器件特性测试结果.　(a) 295 K条件下激光光谱; (b) 25 K条件下激射光谱; (c) 中心波长随温度的变化曲线; (d)光谱宽度随温度的变化曲线

Fig. 5. The opoto-electrical properties of the VCSEL driven by pulse current with 10% duty cycle at various temperatures.　(a) 11 K; (b) 295 K; (c) the laser threshold current as function of temperature; (d) the differential resistance as function of temperature.温度对10%占空比脉冲驱动的激光器光电特性的影响　(a) 11 K温度下10%占空比脉冲电流驱动下功率-电流-电压曲线; (b) 295 K 温度下10%占空比脉冲电流驱动下的功率-电流-电压曲线; (c)阈值电流随温度的变化曲线; (d)微分电阻随温度的变化曲线.