发射波长为8微米的高功率、连续波、锁相量子级联激光器阵列。

High-power, continuous-wave, phase-locked quantum cascade laser arrays emitting at 8 µm.

作者信息

Zhou Wenjia, Lu Quan-Yong, Wu Dong-Hai, Slivken Steven, Razeghi Manijeh

出版信息

Opt Express. 2019 May 27;27(11):15776-15785. doi: 10.1364/OE.27.015776.

DOI:10.1364/OE.27.015776

Abstract

We report a room-temperature eight-element phase-locked quantum cascade laser array emitting at 8 µm with a high continuous-wave power of 8.2 W and wall plug efficiency of 9.5%. The laser array operates primarily via the in-phase supermode and has single-mode emission with a side-mode suppression ratio of ~20 dB. The quantum cascade laser active region is based on a high differential gain (8.7 cm/kA) and low voltage defect (90 meV) design. A record high wall plug efficiency of 20.4% is achieved from a low loss buried ridge type single-element Fabry-Perot laser operating in pulsed mode at 20 °C.

摘要

我们报道了一种室温下的八元件锁相量子级联激光器阵列，其发射波长为8 µm，连续波功率高达8.2 W，壁插效率为9.5%。该激光器阵列主要通过同相超模工作，具有单模发射，边模抑制比约为20 dB。量子级联激光器有源区基于高差分增益（8.7 cm/kA）和低电压缺陷（90 meV）设计。在20 °C下以脉冲模式工作的低损耗掩埋脊型单元件法布里-珀罗激光器实现了创纪录的20.4%的高壁插效率。