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Optics Letters

Optics Letters


  • Vol. 36, Iss. 15 — Aug. 1, 2011
  • pp: 2782–2784

High-speed two-frame shadowgraphy for velocity measurements of laser-induced plasma and shock-wave evolution

Peter Gregorčič and Janez Možina  »View Author Affiliations

Optics Letters, Vol. 36, Issue 15, pp. 2782-2784 (2011)

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We describe a high-speed, two-frame shadowgraph method for the two-dimensional visualization of an expanding laser-induced plasma and shock wave in two time instances. The developed experimental method uses a 30 ps , green-laser, polarized pulse for the direct and delayed illumination separated by a variable time delay in the range from 300 ps to 30 ns . Since the exposed images of a single event are captured with two CCD cameras, the established method enables velocity measurements of the fast laser-induced phenomena within the nanosecond excitation- laser pulse as well as at later times—when the excitation-laser radiation has already ended.

© 2011 Optical Society of America

OCIS Codes
(120.4820) Instrumentation, measurement, and metrology : Optical systems
(140.3440) Lasers and laser optics : Laser-induced breakdown
(320.4240) Ultrafast optics : Nanosecond phenomena

ToC Category:
Instrumentation, Measurement, and Metrology

Original Manuscript: March 1, 2011
Revised Manuscript: May 9, 2011
Manuscript Accepted: June 18, 2011
Published: July 20, 2011

Peter Gregorčič and Janez Možina, "High-speed two-frame shadowgraphy for velocity measurements of laser-induced plasma and shock-wave evolution," Opt. Lett. 36, 2782-2784 (2011)

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