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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 37, Iss. 17 — Sep. 1, 2012
  • pp: 3579–3581

Pulse synthesis in the single-cycle regime from independent mode-locked lasers using attosecond-precision feedback

J. A. Cox, W. P. Putnam, A. Sell, A. Leitenstorfer, and F. X. Kärtner  »View Author Affiliations

Optics Letters, Vol. 37, Issue 17, pp. 3579-3581 (2012)

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We report the synthesis of a nearly single-cycle (3.7 fs), ultrafast optical pulse train at 78 MHz from the coherent combination of a passively mode-locked Ti:sapphire laser (6 fs pulses) and a fiber supercontinuum (1–1.4 μm, with 8 fs pulses). The coherent combination is achieved via orthogonal, attosecond-precision synchronization of both pulse envelope timing and carrier envelope phase using balanced optical cross-correlation and balanced homodyne detection, respectively. The resulting pulse envelope, which is only 1.1 optical cycles in duration, is retrieved with two-dimensional spectral shearing interferometry (2DSI). To our knowledge, this work represents the first stable synthesis of few-cycle pulses from independent laser sources.

© 2012 Optical Society of America

OCIS Codes
(140.7090) Lasers and laser optics : Ultrafast lasers
(270.2500) Quantum optics : Fluctuations, relaxations, and noise
(140.3425) Lasers and laser optics : Laser stabilization

ToC Category:
Lasers and Laser Optics

Original Manuscript: April 30, 2012
Revised Manuscript: July 12, 2012
Manuscript Accepted: July 12, 2012
Published: August 23, 2012

Virtual Issues
September 11, 2012 Spotlight on Optics

J. A. Cox, W. P. Putnam, A. Sell, A. Leitenstorfer, and F. X. Kärtner, "Pulse synthesis in the single-cycle regime from independent mode-locked lasers using attosecond-precision feedback," Opt. Lett. 37, 3579-3581 (2012)

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