Gas Sensor Using a Robust Approach under Time Multiplexing Scheme with a Twin Laser Chip for Absorption and Reference
ZHANG Yong-Gang, GU Yi, Zhang Xiao-Jun, LI Ai-Zhen, TIAN Zhao-Bing
State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050
Gas Sensor Using a Robust Approach under Time Multiplexing Scheme with a Twin Laser Chip for Absorption and Reference
ZHANG Yong-Gang, GU Yi, Zhang Xiao-Jun, LI Ai-Zhen, TIAN Zhao-Bing
State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050
摘要A tunable diode laser absorption spectroscopy nitrous oxide gas sensor at 2.1 micrometres using one antimonide twin laser chip and one InGaAs photodiode is demonstrated, in which time multiplexing techniques are adopted to acquiring both the absorption and reference signal in a robust fluctuation tolerable scheme. Electronics in analogue modality is developed to extracting absorption information and compensating for fluctuations, resulting in a direct analogue voltage output corresponding to the target gas concentration in real time. The performance of the gas sensor is evaluated experimentally, the validity and feasibility of this scheme is also discussed
Abstract：A tunable diode laser absorption spectroscopy nitrous oxide gas sensor at 2.1 micrometres using one antimonide twin laser chip and one InGaAs photodiode is demonstrated, in which time multiplexing techniques are adopted to acquiring both the absorption and reference signal in a robust fluctuation tolerable scheme. Electronics in analogue modality is developed to extracting absorption information and compensating for fluctuations, resulting in a direct analogue voltage output corresponding to the target gas concentration in real time. The performance of the gas sensor is evaluated experimentally, the validity and feasibility of this scheme is also discussed
(Emission, absorption, and scattering of electromagnetic radiation ?)
引用本文:
ZHANG Yong-Gang;GU Yi;Zhang Xiao-Jun;LI Ai-Zhen;TIAN Zhao-Bing. Gas Sensor Using a Robust Approach under Time Multiplexing Scheme with a Twin Laser Chip for Absorption and Reference[J]. 中国物理快报, 2008, 25(9): 3246-3249.
ZHANG Yong-Gang, GU Yi, Zhang Xiao-Jun, LI Ai-Zhen, TIAN Zhao-Bing. Gas Sensor Using a Robust Approach under Time Multiplexing Scheme with a Twin Laser Chip for Absorption and Reference. Chin. Phys. Lett., 2008, 25(9): 3246-3249.
2008, Vol. 25 
