Three-dimensional microscopic modifications in glasses by a femtosecond laser

Kiyotaka Miura; Jianrong Qiu; Tsuneo Mitsuyu; Kazuyuki Hirao

doi:10.1117/12.352678

15 July 1999 Three-dimensional microscopic modifications in glasses by a femtosecond laser

Kiyotaka Miura, Jianrong Qiu, Tsuneo Mitsuyu, Kazuyuki Hirao

Proceedings Volume 3618, Laser Applications in Microelectronic and Optoelectronic Manufacturing IV; (1999) https://doi.org/10.1117/12.352678
Event: Optoelectronics '99 - Integrated Optoelectronic Devices, 1999, San Jose, CA, United States

Abstract

We examined the feasibility of making various microscopic modifications in glasses by ultra-short pulses. It was confirmed that permanent refractive index changes, photo- reduction of samarium ions, the phenomenon of long-lasting phosphorescence, and creation of microcrystals with second- order nonlinear optical functions can be produced with a femtosecond pulse laser only in selective internal areas in glasses. By using a femtosecond laser with a high repetition rate, permanent optical waveguides can be successfully written in various glasses, where refractive index changes are continuously induced along a path traversed by focal point. We also confirmed that only rare earth ions of the core region in the waveguides are reduced by the laser irradiation.

Citation Download Citation

Kiyotaka Miura, Jianrong Qiu, Tsuneo Mitsuyu, and Kazuyuki Hirao "Three-dimensional microscopic modifications in glasses by a femtosecond laser", Proc. SPIE 3618, Laser Applications in Microelectronic and Optoelectronic Manufacturing IV, (15 July 1999); https://doi.org/10.1117/12.352678

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