Optical waveguide fabrication in new glasses and PMMA with temporally tailored ultrashort laser

Kousuke Ohta; Masanao Kamata; Minoru Obara; Naruhito Sawanobori

doi:10.1117/12.552849

1 June 2004 Optical waveguide fabrication in new glasses and PMMA with temporally tailored ultrashort laser

Kousuke Ohta, Masanao Kamata, Minoru Obara, Naruhito Sawanobori

Proceedings Volume 5340, Commercial and Biomedical Applications of Ultrafast Lasers IV; (2004) https://doi.org/10.1117/12.552849
Event: Lasers and Applications in Science and Engineering, 2004, San Jose, Ca, United States

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.

Citation Download Citation

Kousuke Ohta, Masanao Kamata, Minoru Obara, and Naruhito Sawanobori "Optical waveguide fabrication in new glasses and PMMA with temporally tailored ultrashort laser", Proc. SPIE 5340, Commercial and Biomedical Applications of Ultrafast Lasers IV, (1 June 2004); https://doi.org/10.1117/12.552849

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