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Optica Publishing Group
  • Conference on Lasers and Electro-Optics
  • OSA Technical Digest (Optica Publishing Group, 1993),
  • paper CFD1

How the dc electric field photoinduced in glass varies with the polarizations of the incident optical beams: theory and experiment

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Abstract

Intense light can permanently and spontaneously transform simple optical fibers and bulk glasses into frequency doublers. The incident light causes a dc electric field to form inside the glass, which breaks the inversion symmetry of the glass and permits phase- matched second-harmonic generation. The electric field is induced most quickly by irradiating the sample simultaneously with laser beams at frequency ω and at frequency 2ω. This light-induced dc electric field (acting through the third-order susceptibility) explains most of the characteristics of second- harmonic generation in glass.1-4

© 1993 Optical Society of America

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