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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 3 — Jan. 31, 2011
  • pp: 2193–2203

Improving coherent contrast of petawatt laser pulses

Chris Hooker, Yunxin Tang, Oleg Chekhlov, John Collier, Edwin Divall, Klaus Ertel, Steve Hawkes, Bryn Parry, and P. P. Rajeev  »View Author Affiliations


Optics Express, Vol. 19, Issue 3, pp. 2193-2203 (2011)
http://dx.doi.org/10.1364/OE.19.002193


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Abstract

We report on an experimental study of the “coherent” contrast feature that frequently appears in petawatt(PW)-class laser pulses as an exponentially-rising pedestal within a few tens of picoseconds of the compressed pulse. We show that scattering from the diffraction gratings in the stretcher is the principal source of this feature. Replacing the gratings by new, higher-quality components resulted in an order-of-magnitude reduction in the intensity of the pedestal.

© 2011 Optical Society of America

OCIS Codes
(050.0050) Diffraction and gratings : Diffraction and gratings
(290.5880) Scattering : Scattering, rough surfaces
(320.5520) Ultrafast optics : Pulse compression

ToC Category:
Ultrafast Optics

History
Original Manuscript: November 23, 2010
Revised Manuscript: January 14, 2011
Manuscript Accepted: January 14, 2011
Published: January 20, 2011

Citation
Chris Hooker, Yunxin Tang, Oleg Chekhlov, John Collier, Edwin Divall, Klaus Ertel, Steve Hawkes, Bryn Parry, and P. P. Rajeev, "Improving coherent contrast of petawatt laser pulses," Opt. Express 19, 2193-2203 (2011)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-19-3-2193


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