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Journal of the Optical Society of America B

Journal of the Optical Society of America B


  • Editor: Henry van Driel
  • Vol. 27, Iss. 11 — Nov. 1, 2010
  • pp: 2322–2327

Extreme pulse-front tilt from an etalon

Pamela Bowlan and Rick Trebino  »View Author Affiliations

JOSA B, Vol. 27, Issue 11, pp. 2322-2327 (2010)

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Angular dispersion—whether from prisms, diffraction gratings, or etalons—is well known to result in a pulse-front tilt. Focusing into a tilted etalon, in particular, generates a huge angular dispersion, which is very useful for high-resolution spectrometers and pulse shapers. Here we demonstrate experimentally that, due to the large angular dispersion ( 3 ° / nm ) , the pulse directly out of an etalon can have a huge pulse-front tilt—89.9°—which can cause one side of a few-millimeter-wide beam to lead the other by 1 m, that is, several nanoseconds. We propagated a 700 ps near-transform-limited pulse through the etalon and measured the resulting spatiotemporal field, confirming this result. To make this measurement, we used a high-spectral-resolution version of crossed-beam spectral interferometry, which used a high-resolution etalon spectrometer. We also performed simulations, which we found to be in good agreement with our measurements.

© 2010 Optical Society of America

OCIS Codes
(300.6190) Spectroscopy : Spectrometers
(320.4240) Ultrafast optics : Nanosecond phenomena
(320.5550) Ultrafast optics : Pulses
(320.7100) Ultrafast optics : Ultrafast measurements

ToC Category:
Ultrafast Optics

Original Manuscript: June 14, 2010
Revised Manuscript: July 18, 2010
Manuscript Accepted: July 19, 2010
Published: October 18, 2010

Pamela Bowlan and Rick Trebino, "Extreme pulse-front tilt from an etalon," J. Opt. Soc. Am. B 27, 2322-2327 (2010)

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