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Proceedings Paper

Light interaction with thermal waves
Author(s): Daumantas Ciplys; Romualdas Rimeika; Juozas Paskauskas
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Paper Abstract

The interaction of light waves and acoustic vibrations of the lattice manifests in a variety of phenomena. The non-equilibrium phonons in solids are created in two ways: using ultrasonic techniques, the coherent waves of relatively low frequencies as compared to kT/h are generated, and using thermal pulse techniques, the waves with random phases in a wide frequency range with the central frequency of order kT/h are injected. The interaction of waves of the latter type with a light propagating in the surface optical waveguides is the subject of the present lecture. Depending on the lifetime of the phonons, the ballistic and diffusive propagation cases should be distinguishable. Here we consider the diffusive propagation case only, describing the phenomena in terms of the lattice temperature.

Paper Details

Date Published: 25 November 1992
PDF: 6 pages
Proc. SPIE 1844, Acousto-Optics and Applications, (25 November 1992); doi: 10.1117/12.131912
Show Author Affiliations
Daumantas Ciplys, Vilnius Univ. (Lithuania)
Romualdas Rimeika, Vilnius Univ. (Lithuania)
Juozas Paskauskas, Vilnius Univ. (Lithuania)


Published in SPIE Proceedings Vol. 1844:
Acousto-Optics and Applications

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