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Proceedings Paper

Self-diffraction for active stabilization of interference field for reflection hologram recording
Author(s): Eugeni V. Kalyashov; M. V. Tyutchev
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Paper Abstract

A new nethod of stabilizing interference field using the two-wave mixing of the interfering beams at the reflection hologran being recording is described. The results of theoretical analysis of self-diffraction signal for absorption and phase gratings are presented. The simal was used for hologram recording in a dichrcnted gelatin and photorefractive crystal Bi12TiO20 to denonstrate advantage of operation a negative feedback system of holografic setup. 1. An active stabilisation of interference field (IF) is used for hologran recording . It consist in the autcntic coripensation of randan phase difference of reference and object waves by phase corrector and feedback loop. For the . obtaining of siial correction usually additional optical elennts is insert in holographic setup for the forming of the auxiliary interference pattern with low spatial frequency. Instability of this elennts leads to appearance of the false correction signal. For the renoval of this defect it was suggested1'' 2 to use t-beani recording-reathng nethod (or self-diffraction nthod) for obtaining feedback siial 1*it applicability of the nthod was limited by recording of the trantssion phase holograms. In this paper the results of self-diffraction signal analysis for reflection hologram recording using register ndiun with absorption and phase nature of prinry holographic structure (EHS) is discussed. Al so the ______ )I [1101 0 x1 Fig. i. Waves P0 and S0 interfere an interference pattern and a voliii grating in the recording naterial of

Paper Details

Date Published: 1 February 1991
PDF: 5 pages
Proc. SPIE 1238, Three-Dimensional Holography: Science, Culture, Education, (1 February 1991); doi: 10.1117/12.19388
Show Author Affiliations
Eugeni V. Kalyashov, Vavilov State Optical Institute (Russia)
M. V. Tyutchev, Vavilov State Optical Institute (Russia)


Published in SPIE Proceedings Vol. 1238:
Three-Dimensional Holography: Science, Culture, Education

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