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Proceedings Paper

Fabrication and optical properties of single-crystal YAG fiber optics
Author(s): Brian T. Laustsen; James A. Harrington
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Paper Abstract

Single-crystal (SC) fiber optics have been grown for many years for use as passive fibers for the delivery of IR laser radiation and as active fibers useful as minirod lasers. By analogy with doped-YAG, bulk laser crystals it is expected that pure YAG SC fibers would be capable of transmitting extremely high laser energies. In this study we report on the growth of SC yttrium aluminum garnet, Y3Al5O12 (YAG), fibers from undoped SC YAG source rods using the Laser Heated Pedestal Growth (LHPG) technique. The YAG transmits IR wavelengths up to approximately 4 μm which is a little beyond the transmission range for SC sapphire fibers. The garnet family of crystals is one of the most commonly used oxide crystal hosts for lasing ions in high power solid-state lasers, with the most commercially common laser host being YAG. The optical losses for 400-μm diameter YAG fibers have been measured to be about 1 dB/m at 2.94 μm. The longest length of YAG fiber grown has been about 65 cm.

Paper Details

Date Published: 15 February 2012
PDF: 7 pages
Proc. SPIE 8235, Solid State Lasers XXI: Technology and Devices, 823505 (15 February 2012); doi: 10.1117/12.916181
Show Author Affiliations
Brian T. Laustsen, Rutgers, The State Univ. of New Jersey (United States)
James A. Harrington, Rutgers, The State Univ. of New Jersey (United States)

Published in SPIE Proceedings Vol. 8235:
Solid State Lasers XXI: Technology and Devices
W. Andrew Clarkson; Ramesh K. Shori, Editor(s)

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