论文信息 - Low power-consumption mid-infrared distributed feedback quantum cascade laser for gas-sensing application

Low power-consumption mid-infrared distributed feedback quantum cascade laser for gas-sensing application

A low power-consumption distributed feedback quantum cascade laser (DFB-QCL) is developed for gas-sensing in 7 μm wavelength region. The threshold power-consumption was as low as 0.93 W with the sufficient output power of 20 mW at 20°C under continuous-wave condition. In addition, it maintained a single-mode operation between −40 and 50°C without a mode-hopping, leading to a total wavelength shift of 66 nm. This DFB-QCL would be suitable for gas-sensing application.

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