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Photoreduction of Ag+ in aluminoborate glasses induced by irradiation of a femtosecond laser

  • Bin Hua (a1), Jianrong Qiu (a2), Yasuhiko Shimotsuma (a1), Koji Fujita (a1) and Kazuyuki Hirao (a1)...


We report on photoreduction of Ag+ in aluminoborate glasses induced by irradiation of a femtosecond laser. Novel fluorescence was observed in the femtosecond laser irradiated glass when excited by a 365 nm ultraviolet lamp. Optical absorption, emission, and electron spin resonance spectra of the glass samples demonstrated that after the laser irradiation, portions of silver ions near the focused part of the laser beam inside the glass were reduced to silver atoms, which resulted in the formation of the characteristic fluorescence. The observed phenomenon may have promising applications in the fabrication of functional optical devices.


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