Journal of Inorganic Materials

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Femtosecond Laser Induced Color-center in Phosphate Glasses

JIANG Xiong-Wei1; QIU Jian-Rong1,2; ZHU Cong-Shan1; Kazuyuki Hirao2   

  1. 1.Photon Craft Project; Shanghai Institute of Optics and Fine Mechanics; Shanghai 201800; China; 2.Photon Craft Project; JST; Keihanna Plaza; Kyoto 619-0237; Japan
  • Received:2001-12-17 Revised:2002-02-19 Published:2003-01-20 Online:2003-01-20

Abstract: Laser-induced darkening in phosphate laser glasses irradiated by an 800nm, 120fs, 1kHz Ti:sapphire laser was studied for the first time. The ESR spectra of irradiated glass shows laser-induced darkening results from color-center generation through multi-photon absorption. The type of the color-center as hole trapped on non-bridging oxygen.

Key words: color-center, femtosecond laser, phosphate glass, ESR

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