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

fYear

2000

fDate

10-15 Sept. 2000

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics Europe, 2000. Conference Digest. 2000 Conference on

Conference_Location

Nice

Print_ISBN

0-7803-6319-1

Type

conf

DOI

10.1109/CLEOE.2000.909781

Filename

909781