Lasing emission from a random medium composed of thulium-ion-doped glass particles and titanium dioxide powders

Hideki Fujiwara; Keiji Sasaki

doi:10.1117/12.427046

8 May 2001 Lasing emission from a random medium composed of thulium-ion-doped glass particles and titanium dioxide powders

Hideki Fujiwara, Keiji Sasaki

Author Affiliations +

Proceedings Volume 4416, Optical Engineering for Sensing and Nanotechnology (ICOSN 2001); (2001) https://doi.org/10.1117/12.427046
Event: Optical Engineering for Sensing and Nanotechnology (ICOSN '01), 2001, Yokohama, Japan

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.

Citation Download Citation

Hideki Fujiwara and Keiji Sasaki "Lasing emission from a random medium composed of thulium-ion-doped glass particles and titanium dioxide powders", Proc. SPIE 4416, Optical Engineering for Sensing and Nanotechnology (ICOSN 2001), (8 May 2001); https://doi.org/10.1117/12.427046

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