Room temperature (34°C) operation of strain-compensatedquantum cascade lasers

• DOI: 10.1049/el:20001188
• Publication Date: 2002-07-26T11:05:48Z
• Authors: Feng-Qi Liu; Yong-Zhao Zhang; Quan-Sheng Zhang; Ding Ding; Bo Xu; Zhan-Guo Wang; De-Sheng Jiang; Bao-Quan Sun
• Keywords: Quantum cascade laser; Strain (injury); Continuous wave; Degradation

A short wavelength (λ ≃ 3.5 µm) strain-compensated InxGa(1-x)As/InyAl(1-y)As quantum cascade laser is reported. Quasi-continuous wave operation of this device at 34°C with an output power 11.4 mW persisted for more than 30 minutes without obvious degradation. very low threshold current density 1.2 KA/cm2 temperature was observed.