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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 50, Iss. 1 — Jan. 1, 2011
  • pp: 110–115

Suppression of continuous lasing in a carbon nanotube polyimide film mode-locked erbium-doped fiber laser

Lili Gui, Xin Yang, Guangzhen Zhao, Xu Yang, Xiaosheng Xiao, Jinsong Zhu, and Changxi Yang  »View Author Affiliations

Applied Optics, Vol. 50, Issue 1, pp. 110-115 (2011)

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We demonstrated an erbium-doped mode-locked fiber laser using a single-walled carbon nanotube- dispersed polyimide (SWNT-PI) film. Different mode-locking operations were compared and analyzed utilizing SWNT-PI films with different concentrations (2, 1, and 0.25   wt. % , respectively). It was found that the continuous single-pulse mode-locking operation was often accompanied by a continuous wave oscillation part for the 1 and 0.25   wt. % SWNT-PI films, whereas the 2   wt. % SWNT-PI film presented the most excellent mode-locking performance, thanks to sufficient modulation depth. Using the 2   wt. % SWNT-PI film, a stable pulse train with a pulse width of 840 fs and a repetition rate of 15.3 MHz was achieved. The average output power was 0.33 mW at the pump power of 155 mW under an output coupling ratio of 10%. Operational performance of the laser cavity when employing the 2   wt. % SWNT-PI film was also demonstrated.

© 2011 Optical Society of America

OCIS Codes
(140.3510) Lasers and laser optics : Lasers, fiber
(140.4050) Lasers and laser optics : Mode-locked lasers
(190.4400) Nonlinear optics : Nonlinear optics, materials

ToC Category:
Lasers and Laser Optics

Original Manuscript: July 26, 2010
Revised Manuscript: October 22, 2010
Manuscript Accepted: November 11, 2010
Published: December 23, 2010

Lili Gui, Xin Yang, Guangzhen Zhao, Xu Yang, Xiaosheng Xiao, Jinsong Zhu, and Changxi Yang, "Suppression of continuous lasing in a carbon nanotube polyimide film mode-locked erbium-doped fiber laser," Appl. Opt. 50, 110-115 (2011)

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