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Single-mode GaSb-based laterally coupled distributed-feedback laser for CO2 gas detection |
| Shi-Xian Han(韩实现)1,2, Jin-Yi Yan(严进一)1, Chun-Fang Cao(曹春芳)1, Jin Yang(杨锦)1, An-Tian Du(杜安天)1,3, Yuan-Yu Chen(陈元宇)1, Ruo-Tao Liu(刘若涛)1,2, Hai-Long Wang(王海龙)3, and Qian Gong(龚谦)1,† |
1 Key Laboratory of Terahertz Solid State Technology, Shanghai Institute of Microsystem and Information Technology, Shanghai 200050, China;
2 Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China;
3 Shandong Provincial Key Laboratory of Laser Polarization and Information Technology, School of Physics and Physical Engineering, Qufu Normal University, Qufu 273165, China |
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Abstract We report on a GaSb-based laterally coupled distributed feedback (LC-DFB) laser with Cr gratings operating at 2004 nm for CO2 detection application. Butterfly packaged with single-mode fiber pigtailed, the laser diode operates in the continuous-wave mode in a temperature range from -10 ℃ to 60 ℃, with a maximum output power of 2 mW and a maximum side-mode suppression ratio over 30 dB. Wavelength-modulated absorption spectroscopy of CO2 demonstrates the applicability of the LC-DFB laser to tunable diode laser absorption spectroscopy. Furthermore, the diode junction temperature, which is measured by using the wavelength shift method, exhibits a maximum value of 17 ℃ in the single-mode operation range.
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Received: 23 March 2023
Revised: 24 April 2023
Accepted manuscript online: 25 April 2023
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PACS:
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42.55.Px
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(Semiconductor lasers; laser diodes)
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78.67.De
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(Quantum wells)
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42.62.Fi
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(Laser spectroscopy)
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| Fund: Project supported by the Shanghai Municipal Science and Technology Major Project, China (Grant No. 2017SHZDZX03). |
Corresponding Authors:
Qian Gong
E-mail: qgong@mail.sim.ac.cn
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Cite this article:
Shi-Xian Han(韩实现), Jin-Yi Yan(严进一), Chun-Fang Cao(曹春芳), Jin Yang(杨锦), An-Tian Du(杜安天), Yuan-Yu Chen(陈元宇), Ruo-Tao Liu(刘若涛), Hai-Long Wang(王海龙), and Qian Gong(龚谦) Single-mode GaSb-based laterally coupled distributed-feedback laser for CO2 gas detection 2023 Chin. Phys. B 32 104205
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