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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 13 — Jun. 20, 2011
  • pp: 12241–12247

Hot electron dominated rapid transverse ionization growth in liquid water

Michael S. Brown, Thomas Erickson, Kyle Frische, and William M. Roquemore  »View Author Affiliations

Optics Express, Vol. 19, Issue 13, pp. 12241-12247 (2011)

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Pump/probe optical-transmission measurements are used to monitor in space and time the ionization of a liquid column of water following impact of an 800-nm, 45-fs pump pulse. The pump pulse strikes the 53-μm-diameter column normal to its axis with intensities up to 2 × 1015 W/cm2. After the initial photoinization and for probe delay times < 500 fs, the neutral water surrounding the beam is rapidly ionized in the transverse direction, presumably by hot electrons with initial velocities of 0.55 times the speed of light (relativistic kinetic energy of ~100 keV). Such velocities are unusual for condensed-matter excitation at the stated laser intensities.

© 2011 OSA

OCIS Codes
(140.3440) Lasers and laser optics : Laser-induced breakdown
(190.7110) Nonlinear optics : Ultrafast nonlinear optics
(320.7130) Ultrafast optics : Ultrafast processes in condensed matter, including semiconductors
(350.5400) Other areas of optics : Plasmas

ToC Category:
Ultrafast Optics

Original Manuscript: February 15, 2011
Revised Manuscript: May 27, 2011
Manuscript Accepted: June 4, 2011
Published: June 9, 2011

Michael S. Brown, Thomas Erickson, Kyle Frische, and William M. Roquemore, "Hot electron dominated rapid transverse ionization growth in liquid water," Opt. Express 19, 12241-12247 (2011)

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