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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 23 — Nov. 18, 2013
  • pp: 28980–28986

Optical beam dynamics in a gas repetitively heated by femtosecond filaments

N. Jhajj, Y.-H. Cheng, J. K. Wahlstrand, and H. M. Milchberg  »View Author Affiliations

Optics Express, Vol. 21, Issue 23, pp. 28980-28986 (2013)

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We investigate beam pointing dynamics in filamentation in gases driven by high repetition rate femtosecond laser pulses. Upon sudden exposure of a gas to a kilohertz train of filamenting pulses, successive filaments are steered from their original direction to a new stable direction whose equilibrium is determined by a balance among buoyant, viscous, and diffusive processes in the gas. The beam mode is preserved. Results are shown for Xe and air, but are broadly applicable to all configurations employing intense, high repetition rate femtosecond laser pulses in gases.

© 2013 Optical Society of America

OCIS Codes
(190.5530) Nonlinear optics : Pulse propagation and temporal solitons
(260.5950) Physical optics : Self-focusing
(350.6830) Other areas of optics : Thermal lensing
(320.6629) Ultrafast optics : Supercontinuum generation

ToC Category:
Nonlinear Optics

Original Manuscript: October 17, 2013
Manuscript Accepted: October 28, 2013
Published: November 15, 2013

N. Jhajj, Y.-H. Cheng, J. K. Wahlstrand, and H. M. Milchberg, "Optical beam dynamics in a gas repetitively heated by femtosecond filaments," Opt. Express 21, 28980-28986 (2013)

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