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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 52, Iss. 12 — Apr. 20, 2013
  • pp: 2706–2710

Actively Q-switched, thulium–holmium-codoped fiber laser incorporating a silicon-based, variable-optical-attenuator-based Q switch

Minwan Jung and Ju Han Lee  »View Author Affiliations

Applied Optics, Vol. 52, Issue 12, pp. 2706-2710 (2013)

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An actively Q -switched thulium–holmium-codoped fiber laser incorporating an Si-based variable optical attenuator (VOA) is experimentally demonstrated. It has been shown that an Si-based VOA with a response time of hundreds of nanoseconds can be used as a cost-effective 2 μm Q switch due to its extremely wide operating bandwidth from 1.5 to 2 μm, and low electrical power consumption. In our study, the laser’s slope efficiency was measured to be 17 % at an operating wavelength of 1.89 μm. The repetition rate tuning range was from 20 to 80 kHz, which was limited by the optical damage threshold and the response time. The minimum temporal pulsewidth was measured to be 184 ns at a modulation frequency of 20 kHz, and the corresponding maximum peak power was 10 W .

© 2013 Optical Society of America

OCIS Codes
(130.3120) Integrated optics : Integrated optics devices
(140.3540) Lasers and laser optics : Lasers, Q-switched
(060.3510) Fiber optics and optical communications : Lasers, fiber

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: January 15, 2013
Revised Manuscript: March 5, 2013
Manuscript Accepted: March 7, 2013
Published: April 16, 2013

Minwan Jung and Ju Han Lee, "Actively Q-switched, thulium–holmium-codoped fiber laser incorporating a silicon-based, variable-optical-attenuator-based Q switch," Appl. Opt. 52, 2706-2710 (2013)

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