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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 10, Iss. 26 — Dec. 30, 2002
  • pp: 1563–1572

Single-shot measurement of laser-induced double step ionization of helium

K. Y. Kim, I. Alexeev, and H. M. Milchberg  »View Author Affiliations

Optics Express, Vol. 10, Issue 26, pp. 1563-1572 (2002)

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The spatio-temporal evolution of the free electron density induced in a helium gas jet by an intense femtosecond pulse is measured with ~10 fs resolution in a ~1 ps temporal window. The double-step-ionization feature is observed. In these measurements, we use the technique of single-shot supercontinuum spectral interferometry. It is demonstrated that finite laser-gas interaction lengths can strongly affect the interpretation of such measurements.

© 2002 Optical Society of America

OCIS Codes
(120.5050) Instrumentation, measurement, and metrology : Phase measurement
(260.5210) Physical optics : Photoionization
(300.6300) Spectroscopy : Spectroscopy, Fourier transforms
(300.6350) Spectroscopy : Spectroscopy, ionization
(300.6500) Spectroscopy : Spectroscopy, time-resolved
(320.2250) Ultrafast optics : Femtosecond phenomena
(320.7100) Ultrafast optics : Ultrafast measurements
(350.5400) Other areas of optics : Plasmas

ToC Category:
Research Papers

Original Manuscript: November 27, 2002
Revised Manuscript: December 18, 2002
Published: December 30, 2002

K. Kim, I. Alexeev, and H. Milchberg, "Single-shot measurement of laser-induced double step ionization of helium," Opt. Express 10, 1563-1572 (2002)

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