Internal modification of glass materials with a femtosecond laser

Kazuyuki Hirao

doi:10.1117/12.405739

6 November 2000 Internal modification of glass materials with a femtosecond laser

Kazuyuki Hirao

Proceedings Volume 4088, First International Symposium on Laser Precision Microfabrication; (2000) https://doi.org/10.1117/12.405739
Event: First International Symposium on Laser Precision Microfabrication (LPM2000), 2000, Omiya, Saitama, Japan

Abstract

The various microscopic modifications in glasses by ultra- short pulses were examined. It was confirmed that permanent refractive index changes, and creation of microcrystals with second-order nonlinear optical functions could be produced with a femtosecond pulse laser only in selective internal areas in glasses. By using a femtosecond laser with a high repetition rater, 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 single crystals are created from the core region in the waveguides by the laser irradiation, which is used for various kinds of optical devices.

Citation Download Citation

Kazuyuki Hirao "Internal modification of glass materials with a femtosecond laser", Proc. SPIE 4088, First International Symposium on Laser Precision Microfabrication, (6 November 2000); https://doi.org/10.1117/12.405739

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