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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 5 — Feb. 28, 2011
  • pp: 4036–4041

Pulse shortening mode-locked fiber laser by thickness and concentration product of carbon nanotube based saturable absorber

Jin-Chen Chiu, Chia-Ming Chang, Bi-Zen Hsieh, Shu-Ching Lin, Chao-Yung Yeh, Gong-Ru Lin, Chao-Kuei Lee, Jiang-Jen Lin, and Wood-Hi Cheng  »View Author Affiliations

Optics Express, Vol. 19, Issue 5, pp. 4036-4041 (2011)

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The dependence of thickness and concentration product (TCP) of single-wall carbon nanotubes saturable absorber (SWCNTs SA) on stabilizing and shortening pulsewidth in mode-locked fiber lasers (MLFLs) was investigated. We found that an optimized TCP for pulse energy and nonlinear self-phase modulation (SPM) enabled to determine the shorter pulsewidth and broader 3-dB spectral linewidth of the MLFLs. The shortest MLFL pulsewidth of 418 fs and broad spectral linewidth of 6 nm were obtained as the optimized TCP was 70.93 (μm•wt%), which was in good agreement with the area theorem prediction. This significant effect of TCP on pulse energy, SPM, pulsewidth, and spectral linewidth of MLFLs suggests that the TCP represents the total amount of SWCNTs in SA, which can be used as one of important and key parameters for characterizing the passive MLFL pulsewidth.

© 2011 OSA

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

ToC Category:
Lasers and Laser Optics

Original Manuscript: January 6, 2011
Revised Manuscript: February 7, 2011
Manuscript Accepted: February 9, 2011
Published: February 15, 2011

Jin-Chen Chiu, Chia-Ming Chang, Bi-Zen Hsieh, Shu-Ching Lin, Chao-Yung Yeh, Gong-Ru Lin, Chao-Kuei Lee, Jiang-Jen Lin, and Wood-Hi Cheng, "Pulse shortening mode-locked fiber laser by thickness and concentration product of carbon nanotube based saturable absorber," Opt. Express 19, 4036-4041 (2011)

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