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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 25 — Dec. 5, 2011
  • pp: 25199–25205

Dispersion compensation in an Yb-doped fiber oscillator for generating transform-limited, wing-free pulses

Takashi Kurita, Hidetsugu Yoshida, Hiroaki Furuse, Toshiyuki Kawashima, and Noriaki Miyanaga  »View Author Affiliations

Optics Express, Vol. 19, Issue 25, pp. 25199-25205 (2011)

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We investigate the effect of dispersion compensation on temporal characteristics in mode-locking by nonlinear polarization rotation in an ytterbium-doped fiber (YDF) oscillator with intracavity and external grating pairs. A short fixed length YDF was spliced with a longer single-mode fiber (SMF). Using experimentally measured dispersion characteristics of the YDF, SMF and cavity optics, we control the group velocity dispersion (GVD) and spectral broadening in a cavity by changing the SMF length. As a result, the oscillator generated 29.4-fs transform-limited wing-free pulses, which are to our knowledge the shortest and cleanest pulses achieved without the use of additional optics like a prism pair for high-order dispersion compensation. The results show that a precise balance of higher order terms of the GVD and self-phase modulation is essential for shortening pulse duration.

© 2011 OSA

OCIS Codes
(140.3510) Lasers and laser optics : Lasers, fiber
(320.7090) Ultrafast optics : Ultrafast lasers

ToC Category:
Ultrafast Optics

Original Manuscript: August 10, 2011
Revised Manuscript: September 9, 2011
Manuscript Accepted: September 22, 2011
Published: November 23, 2011

Takashi Kurita, Hidetsugu Yoshida, Hiroaki Furuse, Toshiyuki Kawashima, and Noriaki Miyanaga, "Dispersion compensation in an Yb-doped fiber oscillator for generating transform-limited, wing-free pulses," Opt. Express 19, 25199-25205 (2011)

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