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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 14, Iss. 3 — Feb. 6, 2006
  • pp: 1106–1112

Q-switching of an all-fiber laser by acousto-optic modulation of a fiber Bragg grating

M. Delgado-Pinar, D. Zalvidea, A. Díez, P. Pérez-Millán, and M. V. Andrés  »View Author Affiliations

Optics Express, Vol. 14, Issue 3, pp. 1106-1112 (2006)

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We report active Q-switching of an all-fiber laser using a Bragg grating based acousto-optic modulator. Q-switching is performed by modulating a fiber Bragg grating with an extensional acoustic wave. The acoustic wave modulates periodically the effective index profile of the FBG and changes its reflection features. This allows controlling the Q-factor of the cavity. Using 1 m of 300 ppm erbium-doped fiber and a maximum pump power of 180 mW, Q-switch pulses of 10 W of peak power and 82 ns wide were generated. The pulse repetition rate of the laser can be continuously varied from few Hz up to 62.5 kHz.

© 2006 Optical Society of America

OCIS Codes
(060.2310) Fiber optics and optical communications : Fiber optics
(140.3510) Lasers and laser optics : Lasers, fiber
(140.3540) Lasers and laser optics : Lasers, Q-switched
(230.1040) Optical devices : Acousto-optical devices

ToC Category:
Lasers and Laser Optics

Original Manuscript: November 28, 2005
Revised Manuscript: January 23, 2006
Manuscript Accepted: January 29, 2006
Published: February 6, 2006

M. Delgado-Pinar, D. Zalvidea, A. Diez, P. Perez-Millan, and M. Andres, "Q-switching of an all-fiber laser by acousto-optic modulation of a fiber Bragg grating," Opt. Express 14, 1106-1112 (2006)

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