Trace-gas detection based on the temperature-tuning periodically poled MgO: LiNbO3 optical parametric oscillator

被引:0
|
作者
Kong, J. [1 ]
Chan, C. C. [1 ]
Tang, D. Y. [2 ]
Ni, N. [1 ]
Zhao, B. [2 ]
机构
[1] Nanyang Technol Univ, Sch Chem & Biomed Engn, Singapore 639798, Singapore
[2] Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, Singapore
关键词
trace-gas detection; optical parametric oscillator; diode-pumped; solid-state lasers;
D O I
10.1117/12.685085
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
We report on the use of the temperature-tuned optical parametric oscillator for trace gas detection. A synchronization trace gas detection system was designed and demonstrated, in which the measuring errors caused by the instability of the OPO could be greatly reduced. The trace gas detection system was based on a periodically poled MgO-doped LiNbO3 optical parametric oscillator (OPO) which was pumped by a diode-pumped passively Q-switched Nd:GdVO4 laser. The OPO could produce wavelength-tunable signal output through changing the crystal temperature and the grating periods. The usefulness of the trace gas detection system for spectroscopy was demonstrated by directly measuring the photon absorption spectrum of the methane and acetylene gas cells.
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页数:7
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