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Optics Letters

Optics Letters


  • Editor: Anthony J. Campillo
  • Vol. 32, Iss. 2 — Jan. 15, 2007
  • pp: 148–150

Carbon nanotube mode lockers with enhanced nonlinearity via evanescent field interaction in D-shaped fibers

Yong-Won Song, Shinji Yamashita, Chee S. Goh, and Sze Y. Set  »View Author Affiliations

Optics Letters, Vol. 32, Issue 2, pp. 148-150 (2007)

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We demonstrate a novel passive mode-locking scheme for pulsed lasers enhanced by the interaction of carbon nanotubes (CNTs) with the evanescent field of propagating light in a D-shaped optical fiber. The scheme features all-fiber operation as well as a long lateral interaction length, which guarantees a strong nonlinear effect from the nanotubes. Mode locking is achieved with less than 30% of the CNTs compared with the amount of nanotubes used for conventional schemes. Our method also ensures the preservation of the original morphology of the individual CNTs. The demonstrated pulsed laser with our CNT mode locker has a repetition rate of 5.88 MHz and a temporal pulse width of 470   fs .

© 2006 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
(320.5550) Ultrafast optics : Pulses

ToC Category:
Nonlinear Optics

Original Manuscript: October 2, 2006
Revised Manuscript: October 17, 2006
Manuscript Accepted: October 17, 2006
Published: December 23, 2006

Yong-Won Song, Shinji Yamashita, Chee S. Goh, and Sze Y. Set, "Carbon nanotube mode lockers with enhanced nonlinearity via evanescent field interaction in D-shaped fibers," Opt. Lett. 32, 148-150 (2007)

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