Second harmonic generation from bulk glassceramics containing laser-poled dielectric nanocrystals

A. Paleari; S. Brovelli; R. Lorenzi; N. Chiodini; G. Spinolo

doi:10.1117/12.722833

8 May 2007 Second harmonic generation from bulk glassceramics containing laser-poled dielectric nanocrystals

A. Paleari, S. Brovelli, R. Lorenzi, N. Chiodini, G. Spinolo

Proceedings Volume 6582, Nonlinear Optics and Applications II; 65820P (2007) https://doi.org/10.1117/12.722833
Event: International Congress on Optics and Optoelectronics, 2007, Prague, Czech Republic

Abstract

Silica glass with SnO₂ nanocrystals, obtained from sol-gel synthesis and thermal densification at 1100 °C, was poled by means of a two-step process consisting of infrared 1064 nm laser irradiation followed by 532 nm laser exposure in high-voltage static electric field. Maker fringe experiments were then carried out at 1064 nm. The results show the formation of second-order nonlinearity with macroscopic nonlinear thickness (about 1 mm) and nonlinear susceptibility comparable with thermally poled silica (about 0.1 pm/V). Photoluminescence measurements suggest that mechanisms for this process should involve the activation and anisotropic ionization of defects at the interface between nanocrystals and glass.

Citation Download Citation

A. Paleari, S. Brovelli, R. Lorenzi, N. Chiodini, and G. Spinolo "Second harmonic generation from bulk glassceramics containing laser-poled dielectric nanocrystals", Proc. SPIE 6582, Nonlinear Optics and Applications II, 65820P (8 May 2007); https://doi.org/10.1117/12.722833

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