Optical frequency doubling in bulk glass patterns

Abstract

The synthesized bulk glass patterns are necessary for using in different areas of laser physics and photonics. In this work the comparison of results of optical frequency doubling in volumes of glass patterns is presented. Peculiarities of nonlinear processes of light second-harmonic generation are discussed. The performed experiments shown that there are sufficiently different efficiencies, up to some orders of magnitudes, for generation of nonlinear doubled frequency in photo-induced micro-periodicities of second-order susceptibility in different patterns of synthesized glasses. One of a basic task is estimations of the writing times up to saturation and the lifetimes for photo-induced micro-structures in different investigated samples and it also discuss in work. Thus, on base of the obtained experimental results can be made the comparative analysis of influence of concentrations of inserted chemical elements. Now the greatest of obtained value of conversion efficiency in glasses is ~0,0001. It is more smaller than in nonlinear crystals. However, in future the photo-induced micro-structures of second-order susceptibility may be used for creation of new broadband miniature sources of nonlinear harmonics generation for micro- and nano-optoelectronics, and also for bio-photonics. But, additional investigations must be performed for obtaining of necessary efficiencies and more long lifetimes of photo-induced modifications in glass patterns. Thanks to groups of Nikolaev Institute of Inorganic Chemistry and Vavilov State Optical Institute for some synthesized samples. Work was made as part of Russian State Task FWGW-2022-0012.

Speaker

Liubov I. Vostrikova
Rzhanov Institute of Semiconductor Physics SB RAS and Department of Informational Technologies of NSUEM
Russia

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