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Optics Letters

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  • Editor: Anthony J. Campillo
  • Vol. 31, Iss. 24 — Dec. 15, 2006
  • pp: 3568–3570

Active Q switching of a fiber laser with a microsphere resonator

Khanh Kieu and Masud Mansuripur  »View Author Affiliations


Optics Letters, Vol. 31, Issue 24, pp. 3568-3570 (2006)
http://dx.doi.org/10.1364/OL.31.003568


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Abstract

We propose and demonstrate an active Q-switched fiber laser using a high-Q microsphere resonator as the Q-switching element. The laser cavity consists of an Er-doped fiber as the gain medium, a glass microsphere reflector (coupled through a fiber taper) at one end of the cavity, and a fiber Bragg grating reflector at the other end. The reflectivity of the microsphere is modulated by changing the gap between the microsphere and the fiber taper. Active Q switching is realized by oscillating the microsphere in and out of contact with the taper. Using this novel technique, we have obtained giant pulses (maximum peak power 102 W , duration 160 ns ) at a low pump-power threshold ( 3 mW ) .

© 2006 Optical Society of America

OCIS Codes
(060.2320) Fiber optics and optical communications : Fiber optics amplifiers and oscillators
(140.3510) Lasers and laser optics : Lasers, fiber
(140.3540) Lasers and laser optics : Lasers, Q-switched

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: June 23, 2006
Revised Manuscript: September 1, 2006
Manuscript Accepted: September 19, 2006
Published: November 22, 2006

Citation
Khanh Kieu and Masud Mansuripur, "Active Q switching of a fiber laser with a microsphere resonator," Opt. Lett. 31, 3568-3570 (2006)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-31-24-3568


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