Journal
APPLIED PHYSICS LETTERS
Volume 81, Issue 9, Pages 1585-1587Publisher
AMER INST PHYSICS
DOI: 10.1063/1.1504181
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Thermal poling of silica glass modified by femtosecond laser irradiation is demonstrated. Increase of second-harmonic generation in the irradiated regions is observed. This enhancement is interpreted in terms of structural modifications in silica glass that make the poling process more efficient. Evidence of a change in the distribution of the electrostatic field frozen in glass during poling is obtained. This technique is used for chi((2)) grating fabrication. (C) 2002 American Institute of Physics.
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