Electrophotochromic gratings in photorefractive Bi12TiO20 crystals

AA Kamshilin, J Frejlich, PM Garcia - Applied optics, 1992 - opg.optica.org
We present the first experimental demonstration of quasi-permanent holographic recordings
in Bi_12TiO_20 crystals through what is to our knowledge a new electrophotochromic effect …

Recent progress in semiconductor photorefractive crystals

K Shcherbin - Photorefractive Materials and Their Applications 2 …, 2007 - Springer
This chapter is meant to supplement previous extended reviews on photorefractive
semiconductors. The emphasis is on enhancement of the photorefractive response with no …

Measurement of the complex polarizability of electron traps in Bi12SiO20 by a moving-grating technique

P Xia, JMC Jonathan, JP Partanen, RW Hellwarth - Optics letters, 1993 - opg.optica.org
We measure the optical two-beam coupling gain in three nominally undoped cubic n-type
Bi_12SiO_20 crystals as a function of the beam frequency difference Ω and the beam …

Gain exceeding absorptive losses in photorefractive GaAs

K Walsh, TJ Hall - Applied optics, 1989 - opg.optica.org
The photorefractive effect is of considerable interest for parallel optical processing
operations. Semiconductor materials have received attention because of their potentially fast …

Measurements of photorefractive and absorptive gratings in GaAs: EL2 and their use in extracting material parameters

S Rychnovsky, GC Gilbreath, A Zavriyev - JOSA B, 1996 - opg.optica.org
Simultaneous measurements of the photorefractive and the absorptive grating gain
components in GaAs: EL2 are made and are shown to display qualitative behavior …

Efficient ac-field enhancement of phase conjugation in BSO

G Xu, S Naqvi, TA King - Optics communications, 1991 - Elsevier
Phase conjugation reflectivity greater than unity has been obtained in BSO in the
wavelength range 570–590 nm via degenerate four-wave mixing in the usual retroreflection …

Evaluation of InP: Fe parameters by measurement of two wave mixing photorefractive and absorptive gain

M Chauvet, GJ Salamo, DF Bliss, G Bryant - Journal of electronic materials, 1998 - Springer
In this paper, we present two-wave mixing absorption gain measurements in InP: Fe in the
960–1035 nm wavelength range. The measured absorption gain is shown to be positive for …

Temperature Dependence of Photorefractive Response of Sn2P2S6

A Shumelyuk, A Ruediger, OF Schirmer… - … of Holography and …, 2009 - ingentaconnect.com
The photorefractive response in Sn2P2S6 (SPS) is studied as a function of temperature with
two-beam coupling experiments. The temperature dependences of the diffusion field and the …

Photorefractive semiconductors

DD Nolte - Progress in Photorefractive Nonlinear Optics, 2002 - books.google.com
Semiconductors are the dominant material used in electronics and optoelectronics, and they
enjoy a technological maturity that gives them advantages over other materials when they …

Two-wave mixing bistability based on mixed grating formation in photorefractive crystals

TK Das, GC Bhar - Applied Physics B, 1997 - Springer
1 L) and the relative strength (x) of PCG compared with PRG in two cases:(i) when g 1 L> 0
and x> 1 so that there exists either pure PRG or PRG dominates over PCG, and (ii) when g 1 …