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Applied Optics

Applied Optics


  • Editor: James C. Wyant
  • Vol. 46, Iss. 24 — Aug. 20, 2007
  • pp: 6166–6175

Atmospheric electromagnetic pulse propagation effects from thick targets in a terawatt laser target chamber

John L. Remo, Richard G. Adams, and Michael C. Jones  »View Author Affiliations

Applied Optics, Vol. 46, Issue 24, pp. 6166-6175 (2007)

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Generation and effects of atmospherically propagated electromagnetic pulses (EMPs) initiated by photoelectrons ejected by the high density and temperature target surface plasmas from multiterawatt laser pulses are analyzed. These laser radiation pulse interactions can significantly increase noise levels, thereby obscuring data (sometimes totally) and may even damage sensitive probe and detection instrumentation. Noise effects from high energy density (approximately multiterawatt) laser pulses ( 300 400   ps pulse widths) interacting with thick ( 1   mm ) metallic and dielectric solid targets and dielectric–metallic powder mixtures are interpreted as transient resonance radiation associated with surface charge fluctuations on the target chamber that functions as a radiating antenna. Effective solutions that minimize atmospheric EMP effects on internal and proximate electronic and electro-optical equipment external to the system based on systematic measurements using Moebius loop antennas, interpretations of signal periodicities, and dissipation indicators determining transient noise origin characteristics from target emissions are described. Analytic models for the effect of target chamber resonances and associated noise current and temperature in a probe diode laser are described.

© 2007 Optical Society of America

OCIS Codes
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(270.6620) Quantum optics : Strong-field processes
(320.4240) Ultrafast optics : Nanosecond phenomena
(240.6648) Optics at surfaces : Surface dynamics

ToC Category:

Original Manuscript: February 20, 2007
Revised Manuscript: June 15, 2007
Manuscript Accepted: June 17, 2007
Published: August 16, 2007

John L. Remo, Richard G. Adams, and Michael C. Jones, "Atmospheric electromagnetic pulse propagation effects from thick targets in a terawatt laser target chamber," Appl. Opt. 46, 6166-6175 (2007)

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