Optically encoded second-harmonic generation in germanosilicate glass by a femtosecond laser
Optics Letters, Vol. 24, Issue 13, pp. 911-913 (1999)
http://dx.doi.org/10.1364/OL.24.000911
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Abstract
Second-harmonic generation in germanosilicate glasses was encoded by coherent superposition of the 810-nm fundamental and the 405-nm second-harmonic light of a femtosecond laser. The difference spectra between the absorption spectra of the glasses before and after preparation were measured. An evident correlation between the induced second-order nonlinearity and the creation of a Ge electron center was observed, suggesting that a band-to-band transition by multiphoton absorption is probably responsible for the photoinduced second-harmonic generation.
© 1999 Optical Society of America
[Optical Society of America ]
OCIS Codes
(190.4160) Nonlinear optics : Multiharmonic generation
(190.4180) Nonlinear optics : Multiphoton processes
(190.4400) Nonlinear optics : Nonlinear optics, materials
Citation
Jinhai Si, Kenji Kitaoka, Jianrong Qiu, Tsuneo Mitsuyu, and Kazuyuki Hirao, "Optically encoded second-harmonic generation in germanosilicate glass by a femtosecond laser," Opt. Lett. 24, 911-913 (1999)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-24-13-911
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