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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Henry van Driel
  • Vol. 29, Iss. 6 — Jun. 1, 2012
  • pp: 1479–1485

Experimental investigation on a Q -switched, mode-locked fiber laser based on the combination of active mode locking and passive Q switching

Junsu Lee, Joonhoi Koo, You Min Chang, Pulak Debnath, Yong-Won Song, and Ju Han Lee  »View Author Affiliations


JOSA B, Vol. 29, Issue 6, pp. 1479-1485 (2012)
http://dx.doi.org/10.1364/JOSAB.29.001479


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Abstract

We performed an experimental investigation on a Q-switched, mode-locked laser based on the combination of passive Q switching and active mode locking. This study was carried out using an erbium fiber ring laser incorporating an active mode locker employing a fast Si-based variable optical attenuator and a passive Q switch based on a carbon nanotube saturable absorber. It was found that stable Q-switched, mode-locked pulses can be readily generated when using a particular cavity modulation index and pump power. It was also found that our scheme can easily alter the operating regime among the Q switching, Q-switched mode locking, and mode locking by simply controlling the cavity modulation index and/or the pump power. For this particular laser configuration, the cavity modulation index and pump power operating conditions have been experimentally analyzed for three laser operating regimes.

© 2012 Optical Society of America

OCIS Codes
(140.3510) Lasers and laser optics : Lasers, fiber
(140.3540) Lasers and laser optics : Lasers, Q-switched
(140.4050) Lasers and laser optics : Mode-locked lasers

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: January 26, 2012
Revised Manuscript: March 22, 2012
Manuscript Accepted: March 22, 2012
Published: June 1, 2012

Citation
Junsu Lee, Joonhoi Koo, You Min Chang, Pulak Debnath, Yong-Won Song, and Ju Han Lee, "Experimental investigation on a Q-switched, mode-locked fiber laser based on the combination of active mode locking and passive Q switching," J. Opt. Soc. Am. B 29, 1479-1485 (2012)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-29-6-1479

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