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Applied Optics

Applied Optics


  • Editor: James C. Wyant
  • Vol. 46, Iss. 8 — Mar. 10, 2007
  • pp: 1279–1282

Hollow fiber optics with improved durability for high-peak-power pulses of Q -switched Nd:YAG lasers

Yuji Matsuura, Akio Tsuchiuchi, Hiroshi Noguchi, and Mitsunobu Miyagi  »View Author Affiliations

Applied Optics, Vol. 46, Issue 8, pp. 1279-1282 (2007)

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To improve the damage threshold of hollow optical waveguides for transmitting Q-switched Nd:YAG laser pulses, we optimize the metallization processes for the inner coating of fibers. For silver-coated hollow fiber as the base, second, and third Nd:YAG lasers, drying silver films at a moderate temperature and with inert gas flow is found to be effective. By using this drying process, the resistance to high-peak-power optical pulse radiation is drastically improved for fibers fabricated with and without the sensitizing process. The maximum peak power transmitted in the fiber is greater than 20 MW. To improve the energy threshold of aluminum-coated hollow fibers for the fourth and fifth harmonics of Nd:YAG lasers, a thin silver film is added between the aluminum film and the glass substrate to increase adhesion of the aluminum coating. By using this primer layer, the power threshold improves to 3 MW for the fourth harmonics of a Q-switched Nd:YAG laser light.

© 2007 Optical Society of America

OCIS Codes
(060.2280) Fiber optics and optical communications : Fiber design and fabrication
(170.3890) Medical optics and biotechnology : Medical optics instrumentation

Original Manuscript: October 31, 2006
Manuscript Accepted: December 1, 2006
Published: February 20, 2007

Virtual Issues
Vol. 2, Iss. 4 Virtual Journal for Biomedical Optics

Yuji Matsuura, Akio Tsuchiuchi, Hiroshi Noguchi, and Mitsunobu Miyagi, "Hollow fiber optics with improved durability for high-peak-power pulses of Q-switched Nd:YAG lasers," Appl. Opt. 46, 1279-1282 (2007)

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