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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 36, Iss. 24 — Aug. 20, 1997
  • pp: 5934–5940

Optical properties of single-crystal sapphire fibers

Rick K. Nubling and James A. Harrington  »View Author Affiliations


Applied Optics, Vol. 36, Issue 24, pp. 5934-5940 (1997)
http://dx.doi.org/10.1364/AO.36.005934


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Abstract

Single-crystal sapphire fibers have been grown with the laser-heated pedestal-growth method with losses as low as 0.3 dB/m at 2.94 µm. With the incorporation of a computer-controlled feedback system, fibers have been grown with less than ±0.5% diameter variation, or ±1.5 µm for a 300-µm fiber. The losses in these fibers have been reduced further through a postgrowth anneal at 1000 °C in air, from 5.4 to 1.5 dB/m at 543 nm and from 0.4–0.3 dB/m at 2.94 µm. These fibers delivered 4.7 W at 10 Hz of Er:YAG laser power.

© 1997 Optical Society of America

History
Original Manuscript: December 2, 1996
Revised Manuscript: April 8, 1997
Published: August 20, 1997

Citation
Rick K. Nubling and James A. Harrington, "Optical properties of single-crystal sapphire fibers," Appl. Opt. 36, 5934-5940 (1997)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-36-24-5934

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