Surface diagnostics and spectroscopy of nonlinear gyrotropic medium based on polarization effects due to interaction of two waves

A. A. Golubkov; Vladimir A. Makarov

doi:10.1117/12.155684

24 September 1993 Surface diagnostics and spectroscopy of nonlinear gyrotropic medium based on polarization effects due to interaction of two waves

A. A. Golubkov, Vladimir A. Makarov

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Proceedings Volume 1711, High-Performance Optical Spectrometry; (1993) https://doi.org/10.1117/12.155684
Event: High Performance Optical Spectrometry, 1992, Warsaw, Poland

Abstract

The interest in nonlinear liqht reflection phenomena is caused by the fact that they can give a unique information about crystals' surface properties In this work we have used the boundary conditions on the surface of nonlinear media with space dispersion (SD) obtained in. We have considered phenomenologically polarization effects due to interaction of the two arbitrarily polarized waves durinq both propagation and reflection from crystals of cubic, hexagonal and tetraqonal crystal systems (the incident angles of light are supposed equal to zero, and the crystal optical axis to be perpendicular to the boundary). 10 both cases for media with weak gyrotropy four mechanisms of nonlinear optical rotation (NLOR) and deformation (NLOD) of polarization ellipses have been determined. It has been made )fl a first approximation with respect to the parameter of SD Jd/. (here ci is a characteristic length of spatial non-locality ot response, ?*, is a wavelength). The influence of linear qyrotrop>' and dissipation on the interaction ha also been investigated. A nonlinear polarization spectroscopy scheme has been suggested. This scheme allows one to distinqush between contributions of different NLtJR and ILOD rnechansms irrespective of the crystal symmetry. The study of NLOR and NLOD effects during the interaction of two elliptically poirized waves with the medium is shown to give three or four as much spectroscopy information on the cubic nonlinearity and )ts SD as in the case of application of a plane polarized wave. Moreover the joint study of liqht polarization interaction during both reflection and propagation of waves through the crystal is most effective. This is connected with the fact that spectroscopy information received in experiments 'on reflection' and 'on propagation' is complementary to a great degree

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A. A. Golubkov and Vladimir A. Makarov "Surface diagnostics and spectroscopy of nonlinear gyrotropic medium based on polarization effects due to interaction of two waves", Proc. SPIE 1711, High-Performance Optical Spectrometry, (24 September 1993); https://doi.org/10.1117/12.155684

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KEYWORDS

Crystals

Polarization

Spectroscopy

Nonlinear crystals

Reflection

Two wave mixing

Radon

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