Preparation of transparent anatase nanocrystal-dispersed silica films via sol-gel process at low temperatures

Atsunori Matsuda; Yoshinori Kotani; Toshihiro Kogure; Taku Umezawa; Masahiro Tatsumisago; Tsutomu Minami

doi:10.1117/12.384325

2 May 2000 Preparation of transparent anatase nanocrystal-dispersed silica films via sol-gel process at low temperatures

Atsunori Matsuda, Yoshinori Kotani, Toshihiro Kogure, Taku Umezawa, Masahiro Tatsumisago, Tsutomu Minami

Author Affiliations +

Proceedings Volume 3943, Sol-Gel Optics V; (2000) https://doi.org/10.1117/12.384325
Event: Symposium on Integrated Optoelectronics, 2000, San Jose, CA, United States

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.

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Atsunori Matsuda, Yoshinori Kotani, Toshihiro Kogure, Taku Umezawa, Masahiro Tatsumisago, and Tsutomu Minami "Preparation of transparent anatase nanocrystal-dispersed silica films via sol-gel process at low temperatures", Proc. SPIE 3943, Sol-Gel Optics V, (2 May 2000); https://doi.org/10.1117/12.384325

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