The experimental setup for recording dynamic holograms in photorefractive crystal CdTe by IR radiation with several spectral components is developed and built. The results of the dynamic holograms' recording by radiation with two spectral components are presented and discussed.
The orthogonal geometry of three-wave mixing in non-gyrotropic photorefractive crystal (PRC) with cubic symmetry is proposed and studied. In this geometry a single phase-modulated object wave and two elliptically polarized reference waves are mutually orthogonal and propagate in crystal along its principal axes [100], [010] and [001], respectively. It is shown that each of two holograms recorded by pair of object and reference waves operates independently as a polarization-selective element and produces a demodulation signal which is related with one of two polarization components of the object wave. The resulting demodulation signal is a superposition of two demodulation signals originated from two holograms which are combined incoherently. It is shown that orthogonal geometry of three-wave mixing opens a possibility to design a completely polarization-independent adaptive interferometer.
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