The filtration properties of polarization holographic gratings formed in liquid crystal composites have been studied. The gratings were synthesized as a result of superposition of coherent waves with mutually orthogonal polarizations, both linear and circular. The analysis of the polarization state of diffracted and non -diffracted radiation at polarization gratings was made, when the probe beams of different polarizations were incident on gratings. The possibility of complete suppression of diffracted or non-diffracted radiation was demonstrated, when a linearly polarized probe beam was incident on a grating. The grating was recorded by linearly polarized beams. An example of radiation filtering device using these holographic gratings is proposed.
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