Comparison of thermal characteristics of antimonide and phosphide MQW lasers
Comparison of thermal characteristics of antimonide and phosphide MQW lasers
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DOI：
10.1088/0268-1242/20/6/015
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发表时间：
2005-06
影响因子：
1.9
通讯作者：
C. Zhu;Y. Zhang;A. Z. Li;Y. Zheng
中科院分区：
文献类型：
--
作者：
C. Zhu;Y. Zhang;A. Z. Li;Y. Zheng
从数值和实验两方面研究了Sb脊波导单量子阱激光器的热特性，并与磷化物激光器进行了详细的比较。用有限元方法模拟了激光器在连续波和脉冲驱动条件下的热积累和散热过程，并引入了定量的热时间常数来描述激光器的冷却效率。讨论了激光器有源芯内部温度分布的不均匀及其对激光光谱的影响，并通过激光光谱向蓝边展宽的测量证实了这一点。文中还提出并讨论了改善锑激光器热性能的途径。
The thermal characteristics of antimonide ridge waveguide MQW lasers have been investigated numerically and experimentally, and compared with phosphide lasers in detail. Using the finite-element method, the heat accumulation and dissipation process of the lasers under CW and pulse driving conditions have been simulated, and quantitative thermal time constants were introduced to describe the cooling efficiency of the lasers. The non-uniform temperature distribution inside the active core of the laser and its effects on lasing spectra have been discussed, and confirmed by the measurement of the broadening of the lasing spectrum towards the blue side. A way to improve the thermal property of antimonide lasers have also been proposed and discussed.