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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 18 — Aug. 27, 2012
  • pp: 19905–19911

Raman fiber laser harmonically mode-locked by exploiting the intermodal beating of CW multimode pump source

Z. Q. Luo, C. C. Ye, H. Y. Fu, H. H. Cheng, J. Z. Wang, and Z. P. Cai  »View Author Affiliations

Optics Express, Vol. 20, Issue 18, pp. 19905-19911 (2012)

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We report here the first demonstration of a harmonic mode-locked Raman fiber laser using the intermodal beating of a continuous-wave (CW) multiple-longitudinal-mode pump laser. By matching the Raman-cavity round-trip frequency with the intermodal-beating one of a 1064 nm CW pump source, harmonic mode-locking in phosphosilicate Raman fiber laser is stably initiated at the first-order Stokes of 1239.5 nm, and generates rectangular-shape nanosecond pulses with the pulse energy up to 4.25 nJ. Using the new type of mode-locking, the harmonic order can be discretely tuned from 78th- to 693rd-order, and the cavity supermode is suppressed up to 51.1 dB with the signal-to-noise ratio of more than 65 dB.

© 2012 OSA

OCIS Codes
(140.3550) Lasers and laser optics : Lasers, Raman
(140.4050) Lasers and laser optics : Mode-locked lasers

ToC Category:
Lasers and Laser Optics

Original Manuscript: May 23, 2012
Revised Manuscript: June 22, 2012
Manuscript Accepted: June 25, 2012
Published: August 15, 2012

Z. Q. Luo, C. C. Ye, H. Y. Fu, H. H. Cheng, J. Z. Wang, and Z. P. Cai, "Raman fiber laser harmonically mode-locked by exploiting the intermodal beating of CW multimode pump source," Opt. Express 20, 19905-19911 (2012)

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