Nonlinear interactions and processes of scattering of space charge waves in photorefractive crystals

Author

Petrov, M.P. ; Bryksin, V.V. ; Paugurt, A.P. ; Wevering, S. ; Kraetzig, E.

Author_Institution

Physico-Tech. Inst., Acad. of Sci., St. Petersburg, Russia

fYear

2001

fDate

11-11 May 2001

Firstpage

542

Lastpage

543

Abstract

Summary form only given. Dynamic holographic recording in photorefractive crystals is of great practical interest for detecting phase modulated laser signals and for real-time optical computing. Under certain conditions, dynamic recording can provide excitation of space charge waves in photorefractive crystals, resulting in a much higher recording sensitivity and giving new opportunities for signal detection. In this report we describe new effects discovered in photorefractive Bi/sub 12/SiO/sub 20/, Bi/sub 12/GeO/sub 20/, and Bi/sub 12/TiO/sub 20/ crystals associated with nonlinear interactions of space charge waves. They are frequency and wave vector doubling; and temporal and spatial rectification.

Keywords

bismuth compounds; holography; optical modulation; optical signal detection; phase modulation; photorefractive materials; rectification; space charge waves; Bi/sub 12/GeO/sub 20/; Bi/sub 12/SiO/sub 20/; Bi/sub 12/TiO/sub 20/; dynamic holographic recording; frequency vector doubling; nonlinear interactions; nonlinear scattering processes; nonlinear space charge wave interactions; phase modulated laser signal detection; photorefractive Bi/sub 12/GeO/sub 20/ crystals; photorefractive Bi/sub 12/SiO/sub 20/ crystals; photorefractive Bi/sub 12/TiO/sub 20/ crystals; photorefractive crystals; real-time optical computing; recording sensitivity; signal detection; space charge wave excitation; space charge waves; spatial rectification; temporal rectification; wave vector doubling; Bismuth; Crystals; Holographic optical components; Optical computing; Optical recording; Optical scattering; Phase detection; Phase modulation; Photorefractive materials; Space charge;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics, 2001. CLEO '01. Technical Digest. Summaries of papers presented at the Conference on

Conference_Location

Baltimore, MD, USA

Print_ISBN

1-55752-662-1

Type

conf

DOI

10.1109/CLEO.2001.948147

Filename

948147