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Optics Letters

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  • Editor: Anthony J. Campillo
  • Vol. 31, Iss. 23 — Dec. 1, 2006
  • pp: 3471–3473

Direct observation of laser filamentation in high-order harmonic generation

John C. Painter, Mark Adams, Nicole Brimhall, Eric Christensen, Gavin Giraud, Nathan Powers, Matthew Turner, Michael Ware, and Justin Peatross  »View Author Affiliations


Optics Letters, Vol. 31, Issue 23, pp. 3471-3473 (2006)
http://dx.doi.org/10.1364/OL.31.003471


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Abstract

We investigate the spatial evolution of a laser pulse used to generate high-order harmonics (orders ranging from 45 to 91) in a semi-infinite helium-filled gas cell. The 5 mJ , 30 fs laser pulses experience elongated focusing with two distinct waists when focused with f 125 optics in 80   Torr of helium. Extended phase matching for the generation of harmonics occurs in the region between the double foci of the laser, where the laser beam changes from diverging to converging.

© 2006 Optical Society of America

OCIS Codes
(190.4160) Nonlinear optics : Multiharmonic generation
(190.7110) Nonlinear optics : Ultrafast nonlinear optics
(260.5950) Physical optics : Self-focusing

ToC Category:
Nonlinear Optics

History
Original Manuscript: August 9, 2006
Revised Manuscript: September 8, 2006
Manuscript Accepted: September 15, 2006
Published: November 9, 2006

Citation
John C. Painter, Mark Adams, Nicole Brimhall, Eric Christensen, Gavin Giraud, Nathan Powers, Matthew Turner, Michael Ware, and Justin Peatross, "Direct observation of laser filamentation in high-order harmonic generation," Opt. Lett. 31, 3471-3473 (2006)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-31-23-3471


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