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Proceedings Paper

Optical waveguide fabrication in new glasses and PMMA with temporally tailored ultrashort laser
Author(s): Kousuke Ohta; Masanao Kamata; Minoru Obara; Naruhito Sawanobori
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Paper Abstract

We have comparatively studied waveguide fabrication characteristics in various transparent materials by use of temporally shaped femtosecond laser pulses. The materials which we studied here are fused quartz, K-PG375 glass whose melting point is as low as 648 K, and polymethylmethacrylate (PMMA). We have measured amount of refractive index change, writing speed, and laser fluence threshold for waveguide writing in the above mentioned materials. To optimize the optical quality of internal modification of transparent materials by femtosecond laser pulses, we controlled the free electron density induced in the materials by tailoring energy injection as a function of time.

Paper Details

Date Published: 1 June 2004
PDF: 7 pages
Proc. SPIE 5340, Commercial and Biomedical Applications of Ultrafast Lasers IV, (1 June 2004); doi: 10.1117/12.552849
Show Author Affiliations
Kousuke Ohta, Keio Univ. (Japan)
Masanao Kamata, Keio Univ. (Japan)
Minoru Obara, Keio Univ. (Japan)
Naruhito Sawanobori, Sumita Optical Glass, Inc. (Japan)


Published in SPIE Proceedings Vol. 5340:
Commercial and Biomedical Applications of Ultrafast Lasers IV
Joseph Neev; Christopher B. Schaffer; Andreas Ostendorf, Editor(s)

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