Journal
JOURNAL OF NON-CRYSTALLINE SOLIDS
Volume 356, Issue 44-49, Pages 2344-2349Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jnoncrysol.2010.03.037
Keywords
Solar pumped laser; Quantum efficiency; Fluorescence
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Nd-doped SiO(2)-B(2)O(3)-Na(2)O-Al(2)O(3)-CaO-ZrO(2) glasses were prepared and optical properties such as absorption, lifetime and quantum efficiencies (QEs) of the emission were characterized. QE measurement system with natural sunlight as an excitation source was constructed. The radiative QE (eta(r)) obtained from the lifetime by Judd-Ofelt analysis, directly measured QEs using natural sunlight (eta(ns)), simulated sunlight (eta(ss)) and an 800 nm laser (eta(800)) were measured and were compared with each other. The QE measurements suggest that the reduction of parasitic absorption by the host glass could be a more important factor for solar pumped lasers than for laser diode pumped lasers in order to increase the efficiency. (C) 2010 Elsevier B.V. All rights reserved.
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