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<title>Relaxation of photorefractive gratings in cadmium telluride crystals</title>
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1996
Year
Optical MaterialsEngineeringCadmium Telluride CrystalsChemistrySemiconductorsIi-vi SemiconductorOptical PropertiesPhotorefractive Gratings DecayPhotonicsPhotoluminescencePhysicsCrystal MaterialSemi-insulating GermaniumOptoelectronic MaterialsSemiconductor MaterialPhotoelectric MeasurementCrystallographyCrystal Structure DesignPhotorefractive GratingsNatural SciencesApplied PhysicsCondensed Matter Physics
We study experimentally the photorefractive gratings decay in semi-insulating germanium doped cadmium telluride crystals. The estimates for the diffusion length of free carriers L<SUB>D</SUB> and for Debye screening length l<SUB>s</SUB>, for dark and photoconductivities of the sample are done from the angular and intensity dependences of the time constant.