Title :
Multicomponent trace gas analysis with broadly tunable mid-infrared laser spectrometer based on an optical parametric oscillator
Author :
Lerber, T.V. ; Bohren, A. ; Sigrist, M.W.
Author_Institution :
Lab. for Laser Spectrosc. & Environ. Sensing, Eidgenossische Tech. Hochschule, Zurich, Switzerland
Abstract :
Summary form only given. A nanosecond pulsed optical parametric oscillator (OPO) based difference frequency generation (DFG) IR-laser source is implemented in a photoacoustic spectrometer for sensitive and selective trace gas analysis. Tuning ranges of 400-2000 nm fur the OPO and of 2.5-4.5 /spl mu/m using LiNbO/sub 3/ as non-linear medium for the DFG source are achieved with a linewidth of 0.25 cm/sup -1/ throughout the whole tuning range.
Keywords :
chemical variables measurement; high-speed optical techniques; infrared spectrometers; infrared spectroscopy; optical frequency conversion; optical parametric oscillators; optical tuning; photoacoustic spectroscopy; spectrochemical analysis; 2.5 to 4.5 mum; 400 to 2000 nm; LiNbO/sub 3/; broadly tunable mid-infrared laser spectrometer; difference frequency generation source; linewidth; multicomponent trace gas analysis; nanosecond pulsed optical parametric oscillator based difference frequency generation IR-laser source; nonlinear medium; optical parametric oscillator; photoacoustic spectrometer; selective trace gas analysis; sensitive trace gas analysis; tuning range; tuning ranges; Delay effects; Gas lasers; Laser beams; Microphone arrays; Nonlinear optics; Optical pulses; Optical sensors; Pulse measurements; Spectroscopy; Tunable circuits and devices;
Conference_Titel :
Lasers and Electro-Optics Europe, 2000. Conference Digest. 2000 Conference on
Conference_Location :
Nice
Print_ISBN :
0-7803-6319-1
DOI :
10.1109/CLEOE.2000.909781
