Title :
Photoacoustic trace gas detection using pulsed grazing-incidence PPLN optical parametric oscillator
Author :
Wei-Wei Hsiang ; Chin-How Lim ; Geng-Chiau Liang ; Kung, Andrew H.
Author_Institution :
Inst. of Atomic & Molecular Sci., Acad. Sinica, Taipei, Taiwan
Abstract :
A pulsed grazing-incidence PPLN OPO has been used in photoacoustic spectroscopy and trace gas analysis to yield 13 ppbV sensitivity in the detection of methane in nitrogen. Real time detection of methane in ambient air is demonstrated.
Keywords :
air pollution measurement; gas sensors; infrared spectroscopy; optical parametric oscillators; photoacoustic spectroscopy; spectrochemical analysis; spectroscopic light sources; LiNbO/sub 3/; differential photoacoustic detector; methane detection; photoacoustic spectroscopy; photoacoustic trace gas detection; pollution monitoring; portable system; pulsed grazing-incidence PPLN OPO; real time detection; spectral resolution; tunable infrared source; Atom optics; Biomedical monitoring; Biomedical optical imaging; Light sources; Nitrogen; Nonlinear optics; Optical pulses; Optical sensors; Oscillators; Tunable circuits and devices;
Conference_Titel :
Lasers and Electro-Optics, 2001. CLEO/Pacific Rim 2001. The 4th Pacific Rim Conference on
Conference_Location :
Chiba, Japan
Print_ISBN :
0-7803-6738-3
DOI :
10.1109/CLEOPR.2001.967762
