Accession Number : ADP006803

Title :   Instability of Spatial Subharmonic under Hologram Recording in a Photorefractive Crystal,

Corporate Author : CHELYABINSK POLYTECHNIC INST (USSR)

Personal Author(s) : Nestiorkin, O. P.

Report Date : 22 MAY 1992

Pagination or Media Count : 4

Abstract : Wave mixing experiments in photorefractive crystals (PRC) have resulted in the observation of large number of interesting phenomena. Communications about spatial subharmonic generation were published. Subharmonic gratings with a wave vector q/n (n - integer) have been occuring during the illumination PRC Bi12SiO by moving interference pattern with a wave vector q. Authors of suggested the mechanism of generation of subharmonic at the expense of noise component amplification in the field of two pump waves.

Descriptors :   *HOLOGRAMS, AMPLIFICATION, INTERFERENCE, MIXING, NOISE, OBSERVATION, PATTERNS, PUMPS, REFRACTION, CRYSTALS, HARMONICS, GRATINGS(SPECTRA), SPACE CHARGE, ILLUMINATION, SYMPOSIA.

Subject Categories : Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE