High-power 1.5 – 1.6 μm semiconductor lasers with an asymmetric periodic optically coupled waveguide are developed and their current – voltage, light – current, and spectral characteristics are experimentally studied. The characteristics of these lasers are compared with the characteristics of traditional lasers based on double separate-confinement heterostructures. It is shown that the developed lasers have lower divergence and almost the same threshold and power characteristics as conventional lasers with Fabry – Perot resonators. The developed lasers with a cavity length of 1.6 mm and a mesa-stripe contact width of 3 μm mounted in a housing 11 mm in diameter have a power no lower than 200 mW at a pump current not exceeding 700 mA with a divergence of 25 – 35° versus 45° typical for conventional lasers.

中文翻译：

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具有非对称周期性光耦合波导的1.5 – 1.6μm半导体激光器

开发了具有不对称周期性光耦合波导的高功率1.5 – 1.6μm半导体激光器，并通过实验研究了它们的电流-电压，光电流和光谱特性。将这些激光器的特性与基于双分离约束异质结构的传统激光器的特性进行了比较。结果表明，与配备Fabry – Perot谐振器的常规激光器相比，已开发的激光器具有更低的发散度以及几乎相同的阈值和功率特性。腔长为1.6 mm，台面条纹接触宽度为3μm，安装在直径为11 mm的外壳中的已开发激光器，在泵浦电流不超过700 mA且散度为25时，功率不低于200 mW。传统激光器通常为35°与45°。