Large temporal window contrast measurement using optical parametric amplification and low-sensitivity detectors

  • R. C. Shah
  • R. P. Johnson
  • T. Shimada
  • B. M. Hegelich
Topical issue: Fundamental Physics and Ultra-High Laser Fields

Abstract

To address few-shot pulse contrast measurement, we present a correlator coupling the high gain of an optical parametric amplification scheme with large pulse tilt. This combination enables a low sensitivity charge coupled device (CCD) to observe features in the pulse intensity within a 50 ps single-shot window with inter-window dynamic range >107 and <0.5 mJ input energy. We also consider use of optical densities to boost the CCD dynamic range within a single temporal window.

PACS

42.60.Jf Beam characteristics: profile, intensity, and power; spatial pattern formation 42.65.Yj Optical parametric oscillators and amplifiers 52.38.Kd Laser-plasma acceleration of electrons and ions 

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Copyright information

© EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2009

Authors and Affiliations

  • R. C. Shah
    • 1
  • R. P. Johnson
    • 1
  • T. Shimada
    • 1
  • B. M. Hegelich
    • 1
  1. 1.Los Alamos National LaboratoryLos AlamosUSA

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