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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 51, Iss. 23 — Aug. 10, 2012
  • pp: 5664–5667

Semiconductor saturable absorber mirror passively Q-switched fiber laser near 2 μm

Weiqiang Yang, Jing Hou, Bin Zhang, Rui Song, and Zejin Liu  »View Author Affiliations

Applied Optics, Vol. 51, Issue 23, pp. 5664-5667 (2012)

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A passively Q-switched fiber laser near 2 μm is achieved with a semiconductor saturable absorber mirror (SESAM) as a saturable absorber. Stable Q-switched pulses are generated from an extremely compact setup with a central wavelength of 1958.2 nm. Under the bidirectional pump configuration, the repetition rate of the fiber laser can be widely tuned from 20 to 80 kHz by increasing the pump power at the same time the pulse width decreases from 1 μs to 490 ns. When the incident pump power is 1.3 W, the average output power, the pulse repetition rate, the pulse width, and the highest single pulse energy are 91 mW, 80 kHz, 490 ns, and 1.14 μJ, respectively. To further optimize the system configuration, the pulse width can be reduced to 362 ns when the cavity length is reduced.

© 2012 Optical Society of America

OCIS Codes
(140.3540) Lasers and laser optics : Lasers, Q-switched
(060.3510) Fiber optics and optical communications : Lasers, fiber

ToC Category:
Lasers and Laser Optics

Original Manuscript: May 3, 2012
Revised Manuscript: July 5, 2012
Manuscript Accepted: July 10, 2012
Published: August 6, 2012

Weiqiang Yang, Jing Hou, Bin Zhang, Rui Song, and Zejin Liu, "Semiconductor saturable absorber mirror passively Q-switched fiber laser near 2 μm," Appl. Opt. 51, 5664-5667 (2012)

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