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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 3 — Feb. 11, 2013
  • pp: 3001–3009

Background suppression in synthesized pulse waveform by feedback control optimization for flatly broadened supercontinuum generation

Ken Kashiwagi, Hiroyuki Ishizu, Yuichiro Kodama, and Takashi Kurokawa  »View Author Affiliations

Optics Express, Vol. 21, Issue 3, pp. 3001-3009 (2013)

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We demonstrate a method of background component suppression of synthesized pulses for flatly broadened supercontinuum (SC) generation. An adaptive pulse shaping in frequency domain achieved a 26 dB contrast between pulse center and background level in auto-correlation trace by combining two fitness functions during feedback-controlled pulse shaping. The pulse was used as a SC pump, and the spectral peak of the SC at the pump wavelength was suppressed by 5 dB using the combination scheme. Simulation results show that the phase spectra control is required to be within ± π/100 rad to suppress the spectral peak below 3 dB. The results show that adaptive pulse shaping is required to improve SC flatness due to the small mismatch tolerance.

© 2013 OSA

OCIS Codes
(320.5540) Ultrafast optics : Pulse shaping
(320.6629) Ultrafast optics : Supercontinuum generation

ToC Category:
Ultrafast Optics

Original Manuscript: November 29, 2012
Revised Manuscript: January 21, 2013
Manuscript Accepted: January 21, 2013
Published: January 31, 2013

Ken Kashiwagi, Hiroyuki Ishizu, Yuichiro Kodama, and Takashi Kurokawa, "Background suppression in synthesized pulse waveform by feedback control optimization for flatly broadened supercontinuum generation," Opt. Express 21, 3001-3009 (2013)

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