Denisiuk-type reflection holography display with sillenite crystals for imaging and interferometry of small objects

Microscopic Interferometry by Reflection Holography with Photorefractive Sillenite Crystals

“…By finding a new coordinate system x´, y´, z´ through which equation 5assumes the form of equation 4, the refractive index modulation along these axes can be determined. Since the symmetry group of the sillenite crystals is 23…”

“…Two-wave mixing with transmission holography configuration is the most employed arrangement with photorefractive sillenite crystals. However, reflection holography with these materials have been received relatively few attention, in spite of the fact that this sort of holographic configuration has been proved to be quite effective and powerful for interferometry and image processing [23].…”

“…In this framework, it has been proposed a novel optical display for holographic imaging and interferometry using a Bi 12 TiO 20 crystal and red lasers as light source. This optical arrangement employed as a keyelement a polarizing beam splitter (PBS) positioned at the BTO input for polarization selection [23]. The potentialities of the setup for holographic imaging, double exposure holography and time average holography of small diffusely scattering objects are theoretically studied and experimentally demonstrated in this chapter.…”

“…Signal I U as a function of the orientation angle γ; dotted curve, measured values; solid curve, fitting with equation(10), for a -BTO 1 and b -BTO 2 samples[23].…”

A photosensitive Cr3+ center in photorefractive Bi12SiO20 crystals co-doped with chromium and phosphorus

“…[1][2][3][4][5] These materials are technologically important because of their photorefractive (PR) properties caused by light induced charge carrier migration and consecutive trapping by suitable defects. 6 Point defects, either intrinsic or extrinsic, play a fundamental role in the PR behavior.…”