Dielectric relaxation time measurement in absorbing photorefractive materials

I de Oliveira, J Frejlich - Optics communications, 2000 - Elsevier
We show that absorbing photorefractive materials characterized by a space-charge
exponential relaxation time law exhibit an overall hologram optical erasure that is described …

Holographic writing and erasure in unipolar photorefractive materials with multiple active centers: theoretical analysis

F Jariego, F Agulló-López - Applied optics, 1991 - opg.optica.org
A general formalism based on the Kukhtarev equations is developed to describe the kinetics
of holographic recording and erasure in unipolar photorefractive materials containing …

Self‐enhanced diffraction from fixed photorefractive gratings during coherent reconstruction

M Segev, A Kewitsch, A Yariv, GA Rakuljic - Applied physics letters, 1993 - pubs.aip.org
We explore, theoretically and experimentally, the effects of self-enhancement (or self-
depletion) of the diffraction which occurs during coherent reconstruction from fixed …

Photorefractive writing and probing of anisotropic linear and nonlinear lattices

R Allio, D Guzmán-Silva, C Cantillano… - Journal of …, 2015 - iopscience.iop.org
We study experimentally the writing of one-and two-dimensional photorefractive lattices,
focusing on the often overlooked transient regime. Our measurements agree well with …

Effect of applied fields on the Bragg condition and the diffraction efficiency in photorefractive crystals

R De Vré, M Jeganathan, JP Wilde, L Hesselink - Optics letters, 1994 - opg.optica.org
We explore theoretically and experimentally how application of an electric field to a
photorefractive crystal affects the recording and the readout of holograms. We consider, for …

Defects and photorefraction: A relation with mutual benefit

M Imlau - physica status solidi (a), 2007 - Wiley Online Library
Intrinsic and extrinsic defects are at the origin of photorefraction. Donor and acceptor defects
define the properties of the photorefractive response in particular its dispersive behavior …

Perturbational analysis of steady-state and transient-beam fanning in thin and thick photorefractive media

PP Banerjee, JJ Liu - JOSA B, 1993 - opg.optica.org
Using a perturbational-analysis and Fourier-transform techniques, we solve the Kukhtarev
equations to analyze the steady-state and the transient beam fanning in a photorefractive …

Waveguides formed by quasi-steady-state photorefractive spatial solitons

M Morin, G Duree, G Salamo, M Segev - Optics letters, 1995 - opg.optica.org
We show that a quasi-steady-state photorefractive spatial soliton forms a waveguide
structure in the bulk of a photorefractive material. Although the optically induced waveguide …

Spatial solitons in photorefractive media

M Segev, B Crosignani, A Yariv, B Fischer - Physical Review Letters, 1992 - APS
We show that photorefractive media can support a new type of spatial soliton, in which the
diffraction is balanced by the self-scattering (two-wave mixing) of the beam spatial frequency …

Procedure for recording multiple-exposure holograms with equal diffraction efficiency in photorefractive media

AC Strasser, ES Maniloff, KM Johnson, SDD Goggin - Optics letters, 1989 - opg.optica.org
We report experimental results that demonstrate for the first time, to our knowledge, more
than 20 holograms stored and recalled with equal diffraction efficiency in photorefractive …