Abstract

Single-mode lasing of quantum-cascade lasers with a distributed Bragg reflector formed by ion-beam etching in layers of the upper waveguide cladding is demonstrated. The active region is formed based on an In_0.53Ga_0.47As/Al_0.48In_0.52As solid-alloy heteropair with two-phonon depletion of the lower level in the cascade. Single-mode lasing at a temperature of 280 K corresponds to the emission wavelength of 7.74 μm, and the side-mode suppression ratio is 24 dB.

中文翻译：

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离子束蚀刻形成的具有分布式布拉格反射镜的量子级联激光器

摘要

在上部波导包层的各层中，展示了具有通过离子束蚀刻形成的分布式布拉格反射器的量子级联激光器的单模激光发射。基于In _0.53 Ga _0.47 As / Al _0.48 In _0.52 As固态杂对以及级联中较低能级的两个声子耗尽形成有源区。温度为280 K时的单模激光发射波长为7.74μm，侧模抑制比为24 dB。