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Berlin 2001 – wissenschaftliches Programm

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Q: Quantenoptik

Q 32: Poster: Laser Spectroscopy

Q 32.12: Poster

Freitag, 6. April 2001, 12:30–15:00, AT2

Cavity ring-down spectroscopy of molecularly thin layers — •Jörg Lauterbach1,2, Daniel Kleine1, Peter Hering1, and Karl Kleinermanns21Institut für Lasermedizin, Universität Düsseldorf, Universitätsstr. 1, 40225 Düsseldorf, Germany — 2Institut für Physikalische Chemie und Elektrochemie I, Universität Düsseldorf, Universitätsstr. 1, 40225 Düsseldorf, Germany



Cavity ring-down spectroscopy (CRDS) is a highly sensitive laser absorption method. It has so far mostly been used for measurements in the gas phase. With a spectra of a molecularly thin layer of iodine as an example we show that CRDS is also excellently applicable for the examination of thin condensed phase samples. Placing the solid samples directly onto the surface of the cavity mirrors we are able to reach minimal scattering losses. The thin films are measured at normal pressure. The iodine spectra were taken in the frequency range of 16200 to 17200 cm−1 using pulsed cavity ring-down spectroscopy.

References: D. Kleine, J. Lauterbach, K. Kleinermanns, P. Hering; Appl. Phys. B 72, 249 (2001)

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