Tunable diode laser absorption spectroscopy detection of N2O at 2.1 μm using antimonide laser and InGaAs photodiode

被引：11
|
作者：
Zhang Yong-Gang [1 ]
Zhang Xiao-Jun [1 ]
Zhu Xiang-Rong [1 ]
Li Ai-Zhen [1 ]
Liu Sheng [1 ]
机构：
[1] Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, State Key Lab Funct Mat Informat, Shanghai 200050, Peoples R China
来源：
CHINESE PHYSICS LETTERS | 2007年 / 24卷 / 08期
关键词：
D O I：
10.1088/0256-307X/24/8/040
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Tunable diode laser absorption spectroscopy detection of N2O around 2.1 mu m is demonstrated by using a home-made InGaAsSb/AlGaAsSb MQW laser diode and an InGaAs wavelength extended photodiode. Details of the devices and the detection system are described. In the system, the laser is driven by low frequency pulses with long duration to form a wavelength scan around 4741 cm(-1); the absorption information is obtained from the detected signal of the photodiode. By using a gas cell with 15 cm path length, a detection limit is estimated to be smaller than 0.2 Torr.
引用
收藏
页码：2301 / 2303
页数：3
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