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Optics Letters

Optics Letters


  • Editor: Anthony J. Campillo
  • Vol. 32, Iss. 11 — Jun. 1, 2007
  • pp: 1408–1410

Generation of 3.5 nJ femtosecond pulses from a continuous-wave laser without mode locking

James van Howe, Jennifer H. Lee, and Chris Xu  »View Author Affiliations

Optics Letters, Vol. 32, Issue 11, pp. 1408-1410 (2007)

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Using time-lens compression in a loop configuration, we generate 516 fs pulses at 3.5 nJ pulse energy from a continuous-wave 1.55 μ m source without mode locking. Just as a spatial lens can expand or focus a beam in space, so can a time-lens broaden or compress a pulse in time. By placing a time-lens in a loop, we maximize the efficiency of bandwidth generation by using one time-lens driven at low power to emulate a stack of many lenses. Our system is compact, is all fiber, and allows large tuning of the repetition rate and continuous tuning of the pulse width and center wavelength.

© 2007 Optical Society of America

OCIS Codes
(060.2380) Fiber optics and optical communications : Fiber optics sources and detectors
(140.3510) Lasers and laser optics : Lasers, fiber
(320.5520) Ultrafast optics : Pulse compression
(320.7090) Ultrafast optics : Ultrafast lasers

ToC Category:
Ultrafast Optics

Original Manuscript: January 18, 2007
Manuscript Accepted: February 21, 2007
Published: April 27, 2007

James van Howe, Jennifer H. Lee, and Chris Xu, "Generation of 3.5 nJ femtosecond pulses from a continuous-wave laser without mode locking," Opt. Lett. 32, 1408-1410 (2007)

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