41 research outputs found
Mapping of periodically poled crystals via spontaneous parametric down-conversion
Full text linkA new method for characterization of periodically poled crystals is developed
based on spontaneous parametric down-conversion. The method is demonstrated on
crystals of Y:LiNbO3, Mg:Y:LiNbO3 with non-uniform periodically poled
structures, obtained directly under Czochralski growth procedure and designed
for application of OPO in the mid infrared range. Infrared dispersion of
refractive index, effective working periods and wavelengths of OPO were
determined by special treatment of frequency-angular spectra of spontaneous
parametric down-conversion in the visible range. Two-dimensional mapping via
spontaneous parametric down-conversion is proposed for characterizing spatial
distribution of bulk quasi-phase matching efficiency across the input window of
a periodically poled sample.Comment: 19 pages, 6 figure
ELECTRO-OPTICAL PHENOMENA DUE TO INFLUENCE OF LIGHT BEAMS ON MATERIAL PARAMETERS OF LIQUID CRYSTALS
No full textRapid Photochemical Control of Phase Structure of Polymer Liquid Crystals with Hydroxyazobenzene as a Photosensitive Chromophore
No full textPhotochemical Phase Transition Behavior of Polymer Azobenzene Liquid Crystals with a Rigid Core Introduced at a Different Position in a Flexible Side Chain
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Strong Cubic Optical Nonlinearity of Gold Nanoparticles Suspension in Nematic Liquid Crystal
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Optimizing the output characteristics of holograms in a Bi12SiO20 crystal by selecting the orientation of the crystal and the polarization of the readout light
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