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Proceedings Paper

Influence of processing variables on the properties of polycrystalline YAG fibers
Author(s): Hyun Jun Kim; Geoff E. Fair; Allison M. Hart; Santeri A. Potticary; Nicholas G. Usechak
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Paper Abstract

Yttrium aluminum garnet (YAG) is a candidate host material for high power lasers, and the advantages of polycrystalline forms of YAG relative to single crystal (in terms of production cost, mechanical/optical properties, and feasible dopant concentrations) have been demonstrated. In addition, novel gain media in fiber form have attracted attention because of the potential for enhanced cooling efficiency, vibration resistance, and elimination of free space optics. Consequently, our work focuses on the development and characterization of optical-quality polycrystalline YAG fibers. Utilizing robust ceramic processes, we can readily produce highly transparent YAG fibers of ~30 μm diameter. We have recently begun characterizing both the mechanical properties and optical loss of these polycrystalline YAG fibers. In this report, the experimental setups for these measurements will be described and the effects of processing variables on the properties of polycrystalline YAG fibers will be discussed.

Paper Details

Date Published: 7 May 2012
PDF: 10 pages
Proc. SPIE 8381, Laser Technology for Defense and Security VIII, 838111 (7 May 2012); doi: 10.1117/12.918622
Show Author Affiliations
Hyun Jun Kim, UES, Inc. (United States)
Geoff E. Fair, Air Force Research Lab. (United States)
Allison M. Hart, Air Force Research Lab. (United States)
Santeri A. Potticary, Air Force Research Lab. (United States)
Nicholas G. Usechak, Air Force Research Lab. (United States)


Published in SPIE Proceedings Vol. 8381:
Laser Technology for Defense and Security VIII
Mark Dubinskii; Stephen G. Post, Editor(s)

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