Physics of the Solid State

, Volume 41, Issue 6, pp 928–933

A mechanism for photoinduced electronic reconstruction of the oxygen vacancy in doped quartz glass and its characteristics

  • K. M. Golant
  • V. V. Tugushev
Defects. Dislocations. Physics of Strength

DOI: 10.1134/1.1130906

Cite this article as:
Golant, K.M. & Tugushev, V.V. Phys. Solid State (1999) 41: 928. doi:10.1134/1.1130906

Abstract

A mechanism is proposed for electronic reconstruction of excited oxygen-deficient (OD) centers in doped quartz glass, associated with partial delocalization of one of the valence electrons. Using Falicov’s model Hamiltonian, the binding energy, radius, and criterion for an electron transition from a localized state to a state of intermediate radius are qualitatively determined. Densification of the glass matrix surrounding the OD centers is predicted as a possible consequence of the reconstruction of their valence electrons. An explanation is proposed for the irreversible photoinduced changes in refractive index, photoluminescence spectra, and electron paramagnetic resonance that are experimentally observed in doped quartz glasses after processing with large doses of ultraviolet light.

Copyright information

© American Institute of Physics 1999

Authors and Affiliations

  • K. M. Golant
    • 1
  • V. V. Tugushev
    • 1
  1. 1.Fiber-Optics Science Center, Institute of General PhysicsRussian Academy of SciencesMoscowRussia

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