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Optical parametric oscillator -OPO-. A compact and fast tunable Stokes source in CARS spectroscopy

: Hertzberg, J.; Brüggemann, D.; Wies, B.

Castellucci, E.M.; Righini, R.; Foggi, P.:
Coherent raman spectroscopy - applications and new developments : XI European CARS Workshop ; Florence, Italy, 23-25 March 1992
Singapore: World Scientific, 1993
ISBN: 981-02-1125-2
S.15-20 : Abb.,Lit.
European CARS Workshop (ECW) <11, 1992, Florence>
Fraunhofer ILT ()
CARS spectroscopy; central frequency; configuration; parametric oscillator; pump laser source; transient plasma

An optical parametric oscillator (OPO) is employed as a broadband Stokes source for coherent anti-Stokes Raman spectroscopy (CARS). First studies show that this OPO-CARS configuration is useful because of several practical reasons (published in ref. 1). The OPO allows a fast and comfortable spectral selection or enhancement of excited spectral bands. Spectral fluctuations and their influence on the accuracy of single pulse thermometry for OPO-CARS and the conventional broadband dye laser approach are compared. First studies show that OPO-CARS offers a similar accuracy in temperature determination and a great advantage of handling.