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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 5 — Mar. 1, 2014
  • pp: 1290–1293

Direct imaging of the acoustic waves generated by femtosecond filaments in air

J. K. Wahlstrand, N. Jhajj, E. W. Rosenthal, S. Zahedpour, and H. M. Milchberg  »View Author Affiliations


Optics Letters, Vol. 39, Issue 5, pp. 1290-1293 (2014)
http://dx.doi.org/10.1364/OL.39.001290


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Abstract

We present time-resolved measurements of the gas acoustic dynamics following interaction of spatial single- and higher-mode 50 fs, 800 nm pulses in air at 10 Hz and 1 kHz repetition rates. Results are in excellent agreement with hydrodynamic simulations. Under no conditions for single filaments do we find on-axis enhancement of gas density; this occurs only with multifilaments. We also investigate the propagation of probe beams in the gas density profile induced by a single extended filament. We find that light trapping in the expanding annular acoustic wave can create the impression of on-axis guiding in a limited temporal window.

© 2014 Optical Society of America

OCIS Codes
(010.1290) Atmospheric and oceanic optics : Atmospheric optics
(010.1300) Atmospheric and oceanic optics : Atmospheric propagation
(260.2160) Physical optics : Energy transfer
(320.4240) Ultrafast optics : Nanosecond phenomena
(320.7110) Ultrafast optics : Ultrafast nonlinear optics

ToC Category:
Atmospheric and Oceanic Optics

History
Original Manuscript: January 9, 2014
Manuscript Accepted: January 29, 2014
Published: February 26, 2014

Citation
J. K. Wahlstrand, N. Jhajj, E. W. Rosenthal, S. Zahedpour, and H. M. Milchberg, "Direct imaging of the acoustic waves generated by femtosecond filaments in air," Opt. Lett. 39, 1290-1293 (2014)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-39-5-1290

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