Influence of Piezoelectric and Photoelastic Effects on Pulse Hologram Recording in Photorefractive Crystals,
INSTITUTE OF AUTOMATIC CONTROL SISTEMS AND RADIOELECTRONICS TOMSK (USSR)
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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 Maxwells 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 ItrI sub o1m.coskr thetat - thetat-t sub u, where I sub o is the mean light intensity m is the depth of modulation kk sub 1-k sub 2 thetat is Heaviside step.