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Festkörperprobleme 18 pp 241–263Cite as

Forced light scattering at laser-induced gratings—A method for investigation of optically excited solids

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Part of the book series: Advances in Solid State Physics ((ASSP,volume 18))

Abstract

The optical properties (refractive index and coefficient of absorption) of matter become spatially modulated in the interference region of two intensive light waves. The resulting grating patterns have been observed in liquids and solids by diffraction (“forced light scattering”) of a probing beam or by self-diffraction. Thereby the spatial amplitude of the optical constants is measured with interferometric sensitivity. Permanent gratings by been investigated extensively for holographic applications. This paper emphazises transient gratings, methods for measurement of fast grating decay times, and excitation mechanisms. Thermal gratings, corresponding to a spatially periodic temperature distribution, have been applied for temperature diffusivity measurements and excitation of different types of sound waves. In semiconductors gratings have been produced corresponding to a spatial modulation of the free carrier or exciton density.

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References

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  1. Optisches Institut, Technische Universität Berlin, Germany

    H. J. Eichler

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J. Treusch

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© 1978 Friedr. Vieweg & Sohn Verlagsgesellschaft mbH

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Eichler, H.J. (1978). Forced light scattering at laser-induced gratings—A method for investigation of optically excited solids. In: Treusch, J. (eds) Festkörperprobleme 18. Advances in Solid State Physics, vol 18. Springer, Berlin, Heidelberg. https://doi.org/10.1007/BFb0107784

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  • DOI: https://doi.org/10.1007/BFb0107784

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  • Print ISBN: 978-3-528-08024-2

  • Online ISBN: 978-3-540-75362-9

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