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

• Published in: Electronics letters Vol. 53; no. 8; pp. 549 - 551
• Main Authors: Hashimoto, J, Yoshinaga, H, Mori, H, Tsuji, Y, Murata, M, Kato, T, Ekawa, M, Iguchi, Y, Katsuyama, T
• Format: Journal Article
• Language: English
• Published: The Institution of Engineering and Technology 13.04.2017
• Subjects: continuous wave condition; DFB‐QCL; distributed feedback lasers; Electronics; Feedback; gas sensing; gas sensors; laser modes; low power consumption mid‐infrared distributed feedback quantum cascade laser; measurement by laser beam; Photonics; power 0.93 W; power 20 mW; Quantum cascade lasers; single‐mode operation; temperature ‐40 degC to 50 degC; Thresholds; wavelength 7 mum; wavelength shift; Wavelengths; measurement by laser beam; gas sensing; laser modes; single-mode operation; temperature -40 degC to 50 degC; quantum cascade lasers; wavelength shift; low power consumption mid-infrared distributed feedback quantum cascade laser; power 0.93 W; power 20 mW; gas sensors; continuous wave condition; distributed feedback lasers; DFB-QCL; wavelength 7 mum
• ISSN: 0013-5194; 1350-911X; 1350-911X
• DOI: 10.1049/el.2016.4269

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.