Photoinduced stable second-harmonic generation in chalcogenide glasses
Optics Letters, Vol. 26, Issue 12, pp. 914-916 (2001)
http://dx.doi.org/10.1364/OL.26.000914
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Abstract
We report on photoinduced second-harmonic generation (SHG) in chalcogenide glasses. Fundamental and second-harmonic waves from a nanosecond pulsed Nd:YAG laser were used to induce second-order nonlinearity in chalcogenide glasses. The magnitude of SHG in 20Gė20A⋅60S glass was 104 larger than that of tellurite glass with a composition of 15Nb2O 5˙85TeO2 (mol.%). Moreover, no apparent decay of photoinduced SHG in 20Gė20A⋅60S glass was observed after optical poling at room temperature. We suggest that the large and stable value of χ(2) is due to the induced defect structures and large χ(3) of the chalcogenide glasses.
© 2001 Optical Society of America
[Optical Society of America ]
OCIS Codes
(160.2750) Materials : Glass and other amorphous materials
(160.4670) Materials : Optical materials
(160.4760) Materials : Optical properties
(190.0190) Nonlinear optics : Nonlinear optics
(190.2620) Nonlinear optics : Harmonic generation and mixing
Citation
Jianrong Qiu, Jinahi Si, and K. Hirao, "Photoinduced stable second-harmonic generation in chalcogenide glasses," Opt. Lett. 26, 914-916 (2001)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-26-12-914
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