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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 35, Iss. 20 — Oct. 15, 2010
  • pp: 3516–3518

Fiber optical parametric oscillator for sub-50 fs pulse generation: optimization of fiber length

Chenji Gu, Huifeng Wei, Su Chen, Weijun Tong, and Jay E. Sharping  »View Author Affiliations

Optics Letters, Vol. 35, Issue 20, pp. 3516-3518 (2010)

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We demonstrate generation of 48 fs pulses with linear chirp using a short ( 27 mm ) fiber optical parametric oscillator (FOPO), which is synchronously pumped by a mode-locked ytterbium-doped fiber laser. We also study the pulse quality for both the short- and long-wavelength operation where the fiber length inside of the oscillator varies from 17 to 61 mm . The optimal pulse duration is observed only in the short-wavelength operation. Furthermore, we model the FOPO system as a single-pass parametric amplifier including dispersive pulse broadening and walk-off between the pump and output. The optimal condition arises from the minimization of the walk-off and dispersion. When walk-off is large, the parametric amplification process is most efficient over some reduced effective fiber length, leading to an upper limit in the amount of the observed pulse broadening.

© 2010 Optical Society of America

OCIS Codes
(060.2320) Fiber optics and optical communications : Fiber optics amplifiers and oscillators
(060.4370) Fiber optics and optical communications : Nonlinear optics, fibers
(060.5295) Fiber optics and optical communications : Photonic crystal fibers

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: April 12, 2010
Revised Manuscript: August 8, 2010
Manuscript Accepted: September 20, 2010
Published: October 15, 2010

Chenji Gu, Huifeng Wei, Su Chen, Weijun Tong, and Jay E. Sharping, "Fiber optical parametric oscillator for sub-50 fs pulse generation: optimization of fiber length," Opt. Lett. 35, 3516-3518 (2010)

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