Stabilized photorefractive running holograms, with arbitrarily selected phase shift, for material characterization

I de Oliveira, AA Freschi, I Fier, J Frejlich - Optical Materials Express, 2012 - opg.optica.org
We report on the recording of stabilized running holograms in photorefractive materials with
arbitrarily selected phase shift φ between the transmitted and difracted beams propagating …

Characterization of CdTe, CdxZn1− xTe and GaAs detectors

IA Sokolov, MA Bryushinin, VV Kulikov… - Nuclear Instruments and …, 2009 - Elsevier
We report space-and-time current spectroscopy for characterization of high-quality GaAs thin
films grown on semi-insulating gallium arsenide substrates. The approach is based on …

Nonstationary holographic currents in a β-Ga2O3 crystal at wavelength λ= 457 nm

MA Bryushinin, IA Sokolov - Journal of Physics: Conference …, 2021 - iopscience.iop.org
We report the excitation of nonstationary holographic currents in a monoclinic gallium oxide
crystal. Although the crystal is almost transparent and insulating for a visible light, the …

Oscillating holograms recorded in photorefractive crystals by a frequency detuned feedback loop

AA Freschi, ACC Telles, J Frejlich… - Journal of Applied …, 2009 - pubs.aip.org
We report an optoelectronic feedback loop suitable for generating noise-free interference
patterns oscillating at arbitrary waveforms. The technique allows controlling the frequency …

Space-and-time current spectroscopy of GaAs-based detectors

IA Sokolov, MA Bryushinin, AA Petrov… - Nuclear Instruments and …, 2007 - Elsevier
We report space-and-time current spectroscopy for characterization of high-quality GaAs thin
films grown on semi-insulating gallium arsenide substrates. The approach is based on …

Simultaneous excitation of the low and high frequency oscillations of the space charge gratings in photorefractive crystals

M Bryushinin, V Kulikov… - ICO20: Optical Information …, 2006 - spiedigitallibrary.org
We study the effect of simultaneous excitation of the space charge and conductivity running
gratings in photorefractive crystals. For the realization of such regime we illuminate the …