Accession Number : ADP006754

Title :   Influence of Piezoelectric and Photoelastic Effects on Pulse Hologram Recording in Photorefractive Crystals,

Corporate Author : INSTITUTE OF AUTOMATIC CONTROL SISTEMS AND RADIOELECTRONICS TOMSK (USSR)

Personal Author(s) : Litvinov, R. ; Shandarov, S.

Report Date : 22 MAY 1992

Pagination or Media Count : 4

Abstract : In reference 1 the effective recording of hologram gratings in photorefractive crystals by short light pulses was studied experimentally. The self-diffraction theory of light pulses for the time of Maxwell's relaxation tau sub m which was negligible compared with the pulse duration tau sub u was investigated by Kuchtarev and Semenetz. Here we did not take into account the influence of piezoelectric and photoelastic effects that might have a strong influence on hologram recording and restoration. The results of the analysis of hologram grating pulse recording in photorefractive crystals accounting for piesoelectric and photoelastic effects for tau sub u << tau sub m. A hologram grating was assumed to be formed in boundless medium by two interfering light pulses of the same frequency omega with the wave vectors k sub i and k sub 2. We neglected the photogalvanic effect and self-diffraction and considered the intensity of the light field to have the rectangular time envelop I(t;r)=I sub o(1+m.coskr) (theta(t) - theta(t-t sub u)), where I sub o is the mean light intensity; m is the depth of modulation k=k sub 1-k sub 2; theta(t) is Heaviside step.

Descriptors :   *HOLOGRAMS, *LIGHT PULSES, CRYSTALS, DEPTH, DIFFRACTION, FREQUENCY, INTENSITY, LIGHT, MEAN, PULSES, RELAXATION, GRATINGS(SPECTRA), REFRACTION, SYMPOSIA.

Subject Categories : Optics
      Holography

Distribution Statement : APPROVED FOR PUBLIC RELEASE