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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 8 — Apr. 13, 2009
  • pp: 6584–6590

Generation of high repetition rate femtosecond pulses from a CW laser by a time-lens loop

Yitang Dai and Chris Xu  »View Author Affiliations

Optics Express, Vol. 17, Issue 8, pp. 6584-6590 (2009)

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We demonstrate a novel method for femtosecond pulse generation based on a time-lens loop. Time division multiplexing in the loop is performed so that a high repetition rate can be achieved. Pulse width less than 500 fs is generated from a continuous wave (CW) laser without mode locking, and tunable repetition rate from 23 MHz to 400 MHz is demonstrated. Theoretical analysis shows that the repetition rate is ultimately limited by the in-loop interference. By using a 2×2 optical switch, such interference is further suppressed, and repetition rate as high as 1.1 GHz is demonstrated.

© 2009 Optical Society of America

OCIS Codes
(060.2380) Fiber optics and optical communications : Fiber optics sources and detectors
(320.5520) Ultrafast optics : Pulse compression
(320.7090) Ultrafast optics : Ultrafast lasers

ToC Category:
Ultrafast Optics

Original Manuscript: February 20, 2009
Revised Manuscript: March 30, 2009
Manuscript Accepted: March 31, 2009
Published: April 6, 2009

Yitang Dai and Chris Xu, "Generation of high repetition rate femtosecond pulses from a CW laser by a time-lens loop," Opt. Express 17, 6584-6590 (2009)

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