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Proceedings Paper

Planar laser and nonlinear optical waveguides fabricated by pulsed laser deposition
Author(s): Minoru Obara; Kyoichi Adachi; Tetsu Hasegawa; Akihiko Machida; Sachiyo Fukaya; Hiroshi Kumagai; Katsumi Midorikawa
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Paper Abstract

Using KrF laser ablation the fabrication of Yb:YAG, and Cr:YAG planar waveguides as well as nonlinear Co:BaTiO3 waveguide has been carried out. The waveguide structure was fabricated by deposition of a rare-earth-doped YAG layer on an undoped substrate. The optical waveguide was characterized by optical absorption spectra, photoluminescence spectral intensity, optical propagation loss, and valence state by XPS. Co:BaTiO3 nonlinear optical, thin films have been fabricated with good quality using a new hybrid process of two-target pulsed laser deposition and in-situ pulsed laser annealing. Epitaxial Co:BaTiO3 films with Co/Ti concentrations of up to 5% were achieved by this method. Particles on the growing film were almost eliminated by in-situ laser annealing. Cobalt dopant concentrations were easily adjusted and controlled.

Paper Details

Date Published: 14 September 1998
PDF: 9 pages
Proc. SPIE 3343, High-Power Laser Ablation, (14 September 1998); doi: 10.1117/12.321606
Show Author Affiliations
Minoru Obara, Keio Univ. (Japan)
Kyoichi Adachi, Keio Univ. (Japan)
Tetsu Hasegawa, Keio Univ. (Japan)
Akihiko Machida, Keio Univ. (Japan)
Sachiyo Fukaya, Keio Univ. (Japan)
Hiroshi Kumagai, RIKEN--The Institute of Physical and Chemical Research (Japan)
Katsumi Midorikawa, RIKEN--The Institute of Physical and Chemical Research (Japan)

Published in SPIE Proceedings Vol. 3343:
High-Power Laser Ablation
Claude R. Phipps, Editor(s)

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