REAL-TIME SPECKLE PHOTOGRAPHY WITH 2-WAVE MIXING IN PHOTOREFRACTIVE BATIO3 CRYSTALS

Authors
SREEDHAR PR MOHAN NK SIROHI RS
Citation
Pr. Sreedhar et al., REAL-TIME SPECKLE PHOTOGRAPHY WITH 2-WAVE MIXING IN PHOTOREFRACTIVE BATIO3 CRYSTALS, Optical engineering, 33(6), 1994, pp. 1989-1995
Citations number
10
Categorie Soggetti
Optics
Journal title
Optical engineering → ACNP
ISSN journal
00913286
Volume
33
Issue
6
Year of publication
1994
Pages
1989 - 1995
Database
ISI
SICI code
0091-3286(1994)33:6<1989:RSPW2M>2.0.ZU;2-Q
Abstract
A two-beam coupled photorefractive novelty filter is presented for rea l-time measurement of displacement components. In the optical configur ation, the BaTiO3 crystal is oriented such that the spatial phase shif t between the dynamic grating and the interference pattern is +pi/2. T ime evolution of fringe patterns is analyzed. The technique is applied to speckle photography for real-time measurements of displacement com ponents. Experimental results are given.