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Proceedings Paper

Lasing emission from a random medium composed of thulium-ion-doped glass particles and titanium dioxide powders
Author(s): Hideki Fujiwara; Keiji Sasaki
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Paper Abstract

Up-conversion lasing of a new random medium, which is composed of thulium-ion-doped fluorozirconate glass particles and TiO2 powders, is demonstrated. In this medium, it is expected that the near-infrared excitation light will deeply penetrate into the random medium to induce multiphoton excitation processes, while the emission in the visible wavelength region will be confined in small volumes by the strong multiple light scattering. When the power of the excitation light was increased, sharp emission peaks appeared and their peak intensities increased relative to the background spontaneous emission. The excitation power dependence clearly shows the lasing threshold.

Paper Details

Date Published: 8 May 2001
PDF: 4 pages
Proc. SPIE 4416, Optical Engineering for Sensing and Nanotechnology (ICOSN 2001), (8 May 2001); doi: 10.1117/12.427046
Show Author Affiliations
Hideki Fujiwara, Hokkaido Univ. (Japan)
Keiji Sasaki, Hokkaido Univ. (Japan)

Published in SPIE Proceedings Vol. 4416:
Optical Engineering for Sensing and Nanotechnology (ICOSN 2001)
Koichi Iwata, Editor(s)

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