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High power λ ~ 8.5 μm quantum cascade laser grown by MOCVD operating continuous-wave up to 408 K

Journal of Semiconductors, ISSN: 1674-4926, Vol: 42, Issue: 11
2021
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Article Description

Robust quantum cascade laser (QCL) enduring high temperature continuous-wave (CW) operation is of critical importance for some applications. We report on the realization of lattice-matched InGaAs/InAlAs/InP QCL materials grown by metal-organic chemical vapor deposition (MOCVD). High interface quality structures designed for light emission at 8.5 μm are achieved by optimizing and precise controlling of growth conditions. A CW output power of 1.04 W at 288 K was obtained from a 4 mm-long and 10 μm-wide coated laser. Corresponding maximum wall-plug efficiency and threshold current density were 7.1% and 1.18 kA/cm, respectively. The device can operate in CW mode up to 408 K with an output power of 160 mW.

Bibliographic Details

Teng Fei; Shenqiang Zhai; Jinchuan Zhang; Ning Zhuo; Junqi Liu; Lijun Wang; Shuman Liu; Zhiwei Jia; Kun Li; Yongqiang Sun; Kai Guo; Fengqi Liu; Zhanguo Wang

IOP Publishing

Materials Science; Physics and Astronomy; Engineering

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