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Proceedings Article

Processing and transparency of polycrystalline yttrium aluminum garnet (YAG) fibers for optical applications

[+] Author Affiliations
Hyun Jun Kim, HeeDong Lee, Kristin Keller, T. A. Parthasarathy

UES, Inc. (USA)

Geoff Fair, Randall Hay

Air Force Research Lab. (USA)

Proc. SPIE 7912, Solid State Lasers XX: Technology and Devices, 79121T (March 03, 2011); doi:10.1117/12.876133
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From Conference Volume 7912

  • Solid State Lasers XX: Technology and Devices
  • W. Andrew Clarkson; Norman Hodgson; Ramesh Shori
  • San Francisco, California, USA | January 22, 2011

abstract

Polycrystalline YAG fibers are of interest for both optical and structural applications. Various processing routes of YAG fibers for structural applications have been explored; however, processing routes for optical quality polycrystalline YAG fiber have not been investigated intensively despite the potential of the material to enable high power lasers. Recent results in the processing of YAG fiber for laser applications are presented and detailed relationship between processes, microstructures, and optical properties of YAG fibers are discussed. Specifically, details of the processes for green fiber preparation, sintering methods, and transparencies depending on the process variables are shown. Our recent advancement in fiber processing prior to sintering has improved the transparency of YAG fiber significantly. Vacuum or air sintering followed by Hot Isostatic Press (HIP) produced fibers with transparency comparable to that of single crystal YAG fiber.

© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation

Hyun Jun Kim ; Geoff Fair ; HeeDong Lee ; Kristin Keller ; T. A. Parthasarathy, et al.
"Processing and transparency of polycrystalline yttrium aluminum garnet (YAG) fibers for optical applications", Proc. SPIE 7912, Solid State Lasers XX: Technology and Devices, 79121T (March 03, 2011); doi:10.1117/12.876133; http://dx.doi.org/10.1117/12.876133


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