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Proceedings Paper

Coherent anti-Stokes Raman scattering from polaritons with spatial separation of the exciting and probe beams
Author(s): S. N. Orlov; Yu. N. Polivanov
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Paper Abstract

The application of the CARS technique with the spatial separation of the exciting and probe beams allows the elimination of the background, which appears in the signal of CARS from polaritons due to four-photon processes. The propagation length 1p of coherently excited polaritons and the ratio of direct four-photon and two-step three- photon contributions (which are determined by rho(omega)equals(chi) (3)/[(chi) (2)((omega) ) ]2) to the resultant CARS signal can be determined by measuring the intensity of CARS signal, as a function of spacing between the excitation and probe regions. For A1(z) polaritons in BeO, at frequency around 372cm-1, we obtained the following results: lpequals(0.3-+0.05)mm and (rho) approximately equals 2.5x102.

Paper Details

Date Published: 28 January 1999
PDF: 5 pages
Proc. SPIE 3733, ICONO '98: Nonlinear Optical Phenomena and Coherent Optics in Information Technologies, (28 January 1999); doi: 10.1117/12.340087
Show Author Affiliations
S. N. Orlov, Institute of General Physics (Russia)
Yu. N. Polivanov, Institute of General Physics (Russia)


Published in SPIE Proceedings Vol. 3733:
ICONO '98: Nonlinear Optical Phenomena and Coherent Optics in Information Technologies
Sergei S. Chesnokov; Valerii P. Kandidov; Nikolai I. Koroteev, Editor(s)

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