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The experimental results as well as the theoretical background of evanescent wave holographic recording of gratings with 3.2, 0.88 and 0.37 mum pitch (corresponding to spatial frequencies of 310, 1140 and 2700 mm-1) in nano-sized As2S3 films are presented. The thickness of the recording medium is 29 nm. The grating recording is performed using the interference of surface-propagated reference evanescent...
The results of holographic gratings recording in 29, 15 and 8nm thick As 2 S 3 films are presented in the paper. The method is based on the interference of surface-propagating evanescent waves, created by total internal reflection. The condition for successful recording is the penetration depth of these inhomogeneous waves to be greater than the films thickness. In this case, the film’s...
We report diffraction gratings recording in polymer dispersed liquid crystals (PDLC) material with a beam suffering total internal reflection from the sample air surface. The real time diffraction efficiency kinetics as well as the polarization, voltage behavior and angular selectivity of the gratings are studied at different reconstruction geometries. An increase of three times of the diffraction...
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