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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 23 — Nov. 12, 2007
  • pp: 15168–15174

Spectral shearing interferometry with spatially chirped replicas for measuring ultrashort pulses

S.-P. Gorza, P. Wasylczyk, and I. A. Walmsley  »View Author Affiliations

Optics Express, Vol. 15, Issue 23, pp. 15168-15174 (2007)

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A new spectral shearing interferometry technique for ultra-short pulse characterization is demonstrated. The method makes use of a spectral shear that varies across the test pulse beam profile to generate a two-dimensional interferogram that allows simultaneous reference phase measurement and pulse-field reconstruction from a single data set. The method uses a new configuration for upconversion of a single (non-spatially chirped) test pulse with two spatially chirped ancillary pulses in a medium with a highly asymmetric phase matching function. This technique is particularly suited for spectral regions where second harmonic is much easier detectable that the fundamental wavelength, such as telecom band around 1.5 μm, since all the data are available from the measurement at the upconverted wavelength. The high degree of redundancy in the two-dimensional interferogram provides a built-in check of the consistency of the reconstruction.

© 2007 Optical Society of America

OCIS Codes
(190.4360) Nonlinear optics : Nonlinear optics, devices
(320.7100) Ultrafast optics : Ultrafast measurements
(320.7160) Ultrafast optics : Ultrafast technology

ToC Category:
Ultrafast Optics

Original Manuscript: September 14, 2007
Revised Manuscript: October 15, 2007
Manuscript Accepted: October 24, 2007
Published: October 31, 2007

S. P. Gorza, P. Wasylczyk, and I. A. Walmsley, "Spectral shearing interferometry with spatially chirped replicas for measuring ultrashort pulses," Opt. Express 15, 15168-15174 (2007)

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