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Conferences > CLEO > 1995 > CTuA > CTuA6
  • Conference on Lasers and Electro-Optics
  • OSA Technical Digest (Optica Publishing Group, 1995),
  • paper CTuA6

Spatial resolution of metastable photorefractive gratings in semiconductors

D. D. Nolte and R. S. Rana

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Abstract

The optical quenching of metastable defects in semiconductors, such as GaAs:EL2, produces thermodynamic photorefractive space-charge fields that can exceed diffusion fields by several orders of magnitude! This novel photorefractive process does not violate detailed balance, but is a consequence of spatial Fermi-level modulation.1 New developments in AlGaAs:DX and related metastable defects2 have refocused attention on Fermi-level modulation because of the potential for high-density semipermanent holographic information storage.

© 1995 Optical Society of America

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