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Proceedings Paper

Optically Induced Variable Light Deflection By Anisotropic Bragg Diffraction In Photorefractive KNbO[sub]3[/sub]
Author(s): E. Voit; P. Gunter
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Paper Abstract

Photoinduced anisotropic Bragg diffraction in photorefractive KNb03 using the electro-optic coefficient r42=380pm/V has been studied. It has been demonstrated that, by using a noncritical configuration, a He-Ne laser beam with fixed incidence angle can be deflected within a range of 5.67 deg by changing the wavelength λ0 of the Ar+ laser beams used for recording the photorefractive grating (wavelength tuning range: 457.9nm < λ0 < 514.5nm). It is shown that for the reported interaction angles between recording and diffracted beams, the Bragg condition is noncritically fulfilled for the whole deflection range without requiring any beam tilting.

Paper Details

Date Published: 10 July 1987
PDF: 7 pages
Proc. SPIE 0701, 1986 European Conf on Optics, Optical Systems and Applications, (10 July 1987); doi: 10.1117/12.937073
Show Author Affiliations
E. Voit, Swiss Federal Institute of Technology (Switzerland)
P. Gunter, Swiss Federal Institute of Technology (Switzerland)

Published in SPIE Proceedings Vol. 0701:
1986 European Conf on Optics, Optical Systems and Applications
Stefano Sottini; Silvana Trigari, Editor(s)

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