Polarization Properties of Bi sub 12 Sio sub 20 Crystals,

Abstract

Photorefractive crystals Bi12SiO20 (BSO) are particular interest for applications such as spatial light modulators, image amplification and the like. Some properties are connected to distribution of space charge induced in the crystal both by an applied (or intrinsic) electric field and illumination. Many electrical and optical properties as BSO dependence on density and king of localized states. In these paper the results of study of both photoelectret and thermoelectret state (PES and TES) and intrinsic charge distribution as were are presented. The many features of electrets state was carried out by thermally stimulated depolarization (TSD) in temperature range 300-800 K. The potential distribution was determined by point electrical probe method - with 30 um accuracy. The thermo and photoelectrets was formed by polarization in external electric field (U sub p = 0.01-1 kV) in temperature range 300-600 K in dark or under illumination lambda sub p = 0.38-0.63 microns).

Document Details

Document Type
Technical Report
Publication Date
May 22, 1992
Accession Number
ADP006744

Entities

People

  • A. Kudzin
  • G. Snejnoy
  • T. Panchenko
  • Y. Potapovich

Tags

DTIC Thesaurus Topics

  • Advanced Materials
  • Depolarization
  • Electrets
  • Electric Fields
  • Engineered Materials
  • Illumination
  • Materials
  • Modulators
  • Optical Modulators
  • Optical Properties
  • Photorefractive Materials
  • Polarization
  • Space Charge

Fields of Study

  • Physics

Readers

  • Materials Science and Engineering.
  • Pulsed Power and Plasma Physics.
  • Spectroscopy.

Technology Areas

  • Space
  • Space - Hall-Effect Thruster