Laser-induced quasi-phase matching in thermally poled glasses
Optics Letters, Vol. 26, Issue 11, pp. 837-839 (2001)
http://dx.doi.org/10.1364/OL.26.000837
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Abstract
Quasi phase matching was induced within a few minutes by optical means in a thermally poled glass sample. The spatial modulation of χ(2) that was induced by two-photon absorption of the sample subjected to an intense sinusoidal pump intensity pattern resulted in a χ(2) grating. The second-harmonic generation produced by a probe beam was diffracted in specific directions by this χ(2) grating, thus providing a way to monitor its inscription inside the glass. This χ(2) grating is extremely stable at room temperature and in ambient laboratory conditions. During the process of inscription, a linear index grating was also induced. It was not stable, and it relaxed rapidly.
© 2001 Optical Society of America
OCIS Codes
(160.2750) Materials : Glass and other amorphous materials
(160.4330) Materials : Nonlinear optical materials
(190.2620) Nonlinear optics : Harmonic generation and mixing
(190.4180) Nonlinear optics : Multiphoton processes
(210.4810) Optical data storage : Optical storage-recording materials
(230.4320) Optical devices : Nonlinear optical devices
Citation
S. Montant, H. Guillet de Chatellus, and E. Freysz, "Laser-induced quasi-phase matching in thermally poled glasses," Opt. Lett. 26, 837-839 (2001)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-26-11-837
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