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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 21 — Oct. 21, 2013
  • pp: 24879–24893

Self-referenced characterization of femtosecond laser pulses by chirp scan

Vincent Loriot, Gregory Gitzinger, and Nicolas Forget  »View Author Affiliations

Optics Express, Vol. 21, Issue 21, pp. 24879-24893 (2013)

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We investigate a variant of the d-scan technique, an intuitive pulse characterization method for retrieving the spectral phase of ultrashort laser pulses. In this variant a ramp of quadratic spectral phases is applied to the input pulses and the second harmonic spectra of the resulting pulses are measured for each chirp value. We demonstrate that a given field envelope produces a unique and unequivocal chirp-scan map and that, under some asymptotic assumptions, both the spectral amplitude and phase of the measured pulse can be retrieved analytically from only two measurements. An iterative algorithm can exploit the redundancy of the information contained in the chirp-scan map to discard experimental noise, artifacts, calibration errors and improve the reconstruction of both the spectral intensity and phase. This technique is compared to two reference characterization techniques (FROG and SRSI). Finally, we perform d-scan measurements with a simple grating-pair compressor.

© 2013 OSA

OCIS Codes
(320.5540) Ultrafast optics : Pulse shaping
(320.7100) Ultrafast optics : Ultrafast measurements

ToC Category:
Ultrafast Fiber Lasers

Original Manuscript: August 8, 2013
Revised Manuscript: September 26, 2013
Manuscript Accepted: September 26, 2013
Published: October 10, 2013

Vincent Loriot, Gregory Gitzinger, and Nicolas Forget, "Self-referenced characterization of femtosecond laser pulses by chirp scan," Opt. Express 21, 24879-24893 (2013)

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