Holographic Diffraction Grating Controlled by Means of Nematic Liquid Crystal |
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| Authors: | Simeon Sainov Margarita Mazakova Marga Pantcheva Dimitar Tontchev |
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| Affiliation: | Central Laboratory of Optical Storage and Processing of Information , Sofia, 1113, P.O. Box 95, Bulgaria |
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| Abstract: | Results are reported on the investigations on an electrically controlled phase holographic grating. It has a nearly sinusoidal profile with 1,4.μm deep grooves spaced at 12,5μm. The control voltage applied to the nematic liquid crystal has an amplitude of 0-25V and frequency 1-10 kHz. A light beam from a He-Ne laser (0,633μm) with a palarization parallel, perpendicular and at 45° the grooves of the grating is used. |
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| Keywords: | z-scan nematics nonlinear absorption refraction |
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