Title :
Wavelength modulation detection of trace gas using a Fabry-Perot cavity
Author :
Yoshii, Y. ; Kuze, H. ; Takeuchi, N.
Author_Institution :
Center for Environ. Remote Sensing, Chiba Univ., Japan
Abstract :
We report on wavelength modulation detection of trace amounts of acetylene at 1.5 /spl mu/m. A Fabry-Perot cavity (FPC) is employed to enhance the effective absorption length. The wavelength modulation is applied by synchronously modulating the laser cavity and the FPC cell.
Keywords :
Fabry-Perot resonators; air pollution measurement; infrared spectroscopy; laser cavity resonators; modulation spectroscopy; optical modulation; organic compounds; spectrochemical analysis; 1.5 micron; Fabry-Perot cavity; acetylene; effective absorption length; global air pollution; laser cavity synchronous modulation; trace gas detection; wavelength modulation detection; Absorption; Fabry-Perot; Flexible printed circuits; Frequency modulation; Gas lasers; High speed optical techniques; Mirrors; Optical modulation; Optical noise; Optical sensors;
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.2001.967771
