Transient Gain Enhancement in Photorefractive Crystals with Two Types of Movable Charge Carrier (Postprint)

Abstract

Considerable improvement of a transient two-beam coupling gain is reported for Sn2P2S6, a photorefractive crystal that possesses two types of movable charge carrier. A gain enhancement occurs if the phase difference of the interacting beams is abruptly changed to pi. Enhancement is also achieved with periodic phase variations of zero and pi; between two discrete states at modulation frequencies lower than the smallest of two reciprocal characteristic times of the space-charge formation.

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Document Details

Document Type
Technical Report
Publication Date
Jul 15, 2007
Accession Number
ADA473769

Entities

People

  • A. Hryhorashchuk
  • A. Shumelyuk
  • David Evans
  • S. Odoulov

Organizations

  • National Academy of Sciences

Tags

Communities of Interest

  • Sensors
  • Space

DTIC Thesaurus Topics

  • Air Force
  • Air Force Facilities
  • Air Force Research Laboratories
  • Amplitude
  • Charge Carriers
  • Couplings
  • Frequency
  • Government Procurement
  • Governments
  • Information Exchange
  • Intensity
  • Materials
  • Military Research
  • Modulation
  • Phase Modulation
  • Space Charge
  • Steady State

Fields of Study

  • Physics

Readers

  • Electronics Engineering
  • Optical Physics and Photonics.
  • Plasma Physics / Magnetohydrodynamics

Technology Areas

  • Space