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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 33, Iss. 24 — Dec. 15, 2008
  • pp: 2964–2966

Spectral analysis and control to obtain sub- 5 fs pulses by femtosecond filamentation

Zhanxin Wang, Jiansheng Liu, Ruxin Li, and Zhizhan Xu  »View Author Affiliations

Optics Letters, Vol. 33, Issue 24, pp. 2964-2966 (2008)

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A spectral-filter method is numerically demonstrated to obtain sub- 5 fs pulses by using femtosecond filamentation in fused silica. Instead of employing spectral phase compensation, by properly employing a high-pass filter to select the broadened high-frequency spectra that are located almost in phase in the tailing edge of the self-compressed pulses owing to self-steepening, as short as single-cycle pulses can be obtained. For instance, for an input pulse with a duration of 50 fs and energy 2.2 μ J , the minimum pulse duration can reach to 4 fs (about 1.5   cycles ) by applying a proper spectral filter.

© 2008 Optical Society of America

OCIS Codes
(190.5530) Nonlinear optics : Pulse propagation and temporal solitons
(320.5520) Ultrafast optics : Pulse compression
(320.5540) Ultrafast optics : Pulse shaping

ToC Category:
Ultrafast Optics

Original Manuscript: September 2, 2008
Revised Manuscript: October 30, 2008
Manuscript Accepted: November 6, 2008
Published: December 5, 2008

Zhanxin Wang, Jiansheng Liu, Ruxin Li, and Zhizhan Xu, "Spectral analysis and control to obtain sub-5 fs pulses by femtosecond filamentation," Opt. Lett. 33, 2964-2966 (2008)

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