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Optics Letters

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  • Vol. 23, Iss. 2 — Jan. 15, 1998
  • pp: 120–122

Anomalous long-range propagation of femtosecond laser pulses through air: moving focus or pulse self-guiding?

H. R. Lange, G. Grillon, J.-F. Ripoche, M. A. Franco, B. Lamouroux, B. S. Prade, A. Mysyrowicz, E. T. J. Nibbering, and A. Chiron  »View Author Affiliations


Optics Letters, Vol. 23, Issue 2, pp. 120-122 (1998)
http://dx.doi.org/10.1364/OL.23.000120


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Abstract

Self-guided propagation of femtosecond laser pulses is studied for a converging-beam configuration. Channeling of the pulse energy through various gases is observed over distances well beyond the lens focal point, a fact that cannot be explained by the moving-focus model. The results are in good agreement with three-dimensional numerical simulations.

© 1998 Optical Society of America

OCIS Codes
(190.0190) Nonlinear optics : Nonlinear optics
(190.3270) Nonlinear optics : Kerr effect
(190.5530) Nonlinear optics : Pulse propagation and temporal solitons
(190.7110) Nonlinear optics : Ultrafast nonlinear optics

Citation
H. R. Lange, G. Grillon, J.-F. Ripoche, M. A. Franco, B. Lamouroux, B. S. Prade, A. Mysyrowicz, E. T. J. Nibbering, and A. Chiron, "Anomalous long-range propagation of femtosecond laser pulses through air: moving focus or pulse self-guiding?," Opt. Lett. 23, 120-122 (1998)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-23-2-120


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References

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  7. In the absence of ionization the solution of the nonlinear propagation equation leads to a singularity. We removed this beam collapse by introducing an upper limit of 1014W/cm2 for the local intensity.
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