Abstract

We report greatly enhanced femtosecond laser-induced precipitation of nonlinear optical crystals in glasses owing to the addition of silver. Ba2TiSi2O8 (BTS) crystals were space-selectively precipitated inside a Ag+-doped BaOTiO2SiO2 glass by using a focused femtosecond laser with 800 nm, 250 kHz, and 150 fs. The laser induced crystals were confirmed by micro-Raman spectra to be BTS phases. The irradiation time for crystallization in Ag+-doped BaOTiO2SiO2 glasses was much shorter than that in undoped BaOTiO2SiO2 glasses under the same irradiation conditions. The mechanism responsible for the observed phenomenon is discussed.

© 2009 Optical Society of America

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