This article is cited in 1 paper

Nonlinear optical phenomena and devices

Elimination of the background from polariton CARS spectra by spatial separation of the exciting and probe beams

S. N. Orlov, Yu. N. Polivanov

Prokhorov General Physics Institute of the Russian Academy of Sciences, Moscow

Abstract: A method for elimination of the background (resulting from direct four-photon processes) from polariton CARS spectra is proposed and demonstrated experimentally. The method is based on the ability of polaritons to propagate in a medium over macroscopic distances and it requires a geometry of the interacting waves in which the regions of biharmonic excitation of polaritons and probing of the excited polaritons by a probe field are spatially separated in a crystal.

PACS: 42.65.Dr, 78.30.Hv, 71.36.+c

Received: 10.10.1997

 English version: Quantum Electronics, 1998, 28:2, 167–168

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