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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 37, Iss. 14 — Jul. 15, 2012
  • pp: 2874–2876

Coherent artifact in modern pulse measurements

Justin Ratner, Günter Steinmeyer, Tsz Chun Wong, Randy Bartels, and Rick Trebino  »View Author Affiliations

Optics Letters, Vol. 37, Issue 14, pp. 2874-2876 (2012)

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We simulate multishot intensity-and-phase measurements of unstable trains of complex ultrashort pulses using second-harmonic-generation (SHG) frequency-resolved optical gating (FROG) and spectral-phase interferometry for direct electric-field reconstruction (SPIDER). Both techniques fail to see the pulse structure. But FROG yields the correct average pulse duration and suggests the instability by exhibiting significant disagreement between measured and retrieved traces. SPIDER retrieves the correct average spectral phase but significantly underestimates the average pulse duration. In short, SPIDER measures only the coherent artifact. An analytical calculation confirms this last fact.

© 2012 Optical Society of America

OCIS Codes
(320.0320) Ultrafast optics : Ultrafast optics
(320.7100) Ultrafast optics : Ultrafast measurements

ToC Category:
Ultrafast Optics

Original Manuscript: April 10, 2012
Manuscript Accepted: May 24, 2012
Published: July 11, 2012

Justin Ratner, Günter Steinmeyer, Tsz Chun Wong, Randy Bartels, and Rick Trebino, "Coherent artifact in modern pulse measurements," Opt. Lett. 37, 2874-2876 (2012)

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