RAMAN SCATTERING OF POLARITONS IN A KT<suB>i</suB>OPO<suB>4</suB> CRYSTAL

Chin. Phys. Lett.

1990, Vol. 7

Issue (10): 469-472 DOI:

Original Articles

RAMAN SCATTERING OF POLARITONS IN A KT_iOPO₄ CRYSTAL

XU Liwen

Institute of Physics, Academia Sinica, Beijing 100080

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XU Liwen 1990 Chin. Phys. Lett. 7 469-472

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Abstract The spontaneous Raman scattering of polaritons in the biazial orthorhombic KT_iOPO₄(KTP) crystal was investigated with a cw Ar⁺ laser. The dispersion branches of polaritons associated with A₁-phonons have been calculated from spectral data for different wave vector directions from near-forward scattering experiments. The angular dependence of Raman scattering efficiency (RSE) in 60-300cm^-1 and 500-800cm^-1 regions are shown schematically. The collective interaction of multi-mode lattice vibrations and an “overall” effect are discussed phenomenally.

Keywords: 78.30.-j

Published: 01 October 1990

PACS:

78.30.-j

(Infrared and Raman spectra)

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y1990/V7/I10/0469

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