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Proceedings Paper

Preparation of transparent anatase nanocrystal-dispersed silica films via sol-gel process at low temperatures
Author(s): Atsunori Matsuda; Yoshinori Kotani; Toshihiro Kogure; Taku Umezawa; Masahiro Tatsumisago; Tsutomu Minami
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Paper Abstract

Optical homogeneity of organic dye-doped sol-gel silica slab has been improved. Single longitudinal mode laser oscillation with 1.58GHz line width at 467 nm wavelength has been achieved. The first operation of a distributed feedback dye-doped sol-gel silica laser, with periodic gain modulation induced by the interference pattern of the pump laser beams, has been demonstrated in the red and the blue optical regions. 20nm wavelength tuning range, 4.5 percent slope efficiency and 60pm laser line width have also been obtained. Based on the quenching of phosphorescence by oxygen, a novel oxygen senor has been developed using erythrosin B doped silica. The oxygen sensing is effective from 0.014 mbar to 600mbar, and the sensitivity improves by a factor of 10 as compared to transition-metal optical fiber oxygen sensors.

Paper Details

Date Published: 2 May 2000
PDF: 10 pages
Proc. SPIE 3943, Sol-Gel Optics V, (2 May 2000); doi: 10.1117/12.384325
Show Author Affiliations
Atsunori Matsuda, Osaka Prefecture Univ. (Japan)
Yoshinori Kotani, Osaka Prefecture Univ. (Japan)
Toshihiro Kogure, Univ. of Tokyo (Japan)
Taku Umezawa, Univ. of Tokyo (Japan)
Masahiro Tatsumisago, Osaka Prefecture Univ. (Japan)
Tsutomu Minami, Osaka Prefecture Univ. (Japan)


Published in SPIE Proceedings Vol. 3943:
Sol-Gel Optics V
Bruce S. Dunn; Edward J. A. Pope; Helmut K. Schmidt; Masayuki Yamane, Editor(s)

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