Lahoz, F and Perez-Rodriguez, C and Halder, A and Das, Shyamal and Paul, Mukul Chandra and Pal, Mrinmay and Bhadra, Shyamal Kumar and Vasconcelos, H C (2011) Complete energy transfer due to rare-earth phase segregation in optical fiber preform glasses. Journal of Applied Physics, 110 (8). Article No: -083121 . ISSN 0021-8979

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An Yb(3+) to Tm(3+) energy-transfer quantum yield close to one has been found in phase-separated yttrium-alumina silicate optical fiber preform glasses. Optical absorption, luminescence, lifetime measurements, and rare-earth concentration dependence have been performed to investigate the feasibility of efficient blue upconversion fiber lasers through convenient Yb(3+) sensitation. Luminescence decay measurements have demonstrated the co-existence of two phases. One of the phases is characterized by an yttrium-rich composition. Most of the RE ions partition into the yttrium-rich phase and produce the intense upconversion emission.

Item Type: Article
Subjects: Processing Science
Divisions: Fiber Optics and Photonics
Depositing User: Bidhan Chaudhuri
Date Deposited: 16 Jan 2012 12:12
Last Modified: 22 Nov 2012 07:06

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