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Full-aperture backscatter diagnostics and applications at the Texas Petawatt Laser facility

  • C. Wang
  • , C. Wagner
  • , G. Dyer
  • , E. Gaul
  • , N. Kandadai
  • , N. Riley
  • , D. Kuk
  • , E. Mccary
  • , A. Meadows
  • , I. Pomerantz
  • , M. Spinks
  • , T. Borger
  • , A. Bernstein
  • , M. Donovan
  • , M. Martinez
  • , T. Ditmire
  • , Bjorn M. Hegelich

Research output: Contribution to journalArticlepeer-review

Abstract

In this paper, we present the development and application of a full-aperture backscatter diagnostics system at the Texas Petawatt Laser (TPW) facility. The diagnostic system includes three independent diagnostic stations. With this system, we obtained TPW on-shot focus properties, and high-harmonic spectral emission from solid foils (e.g., Cu and Al) and their Si substrate in an experiment to study laser hole boring, which show the hole-boring mechanism at relativistic intensities. The measured on-target full-power focal spots from ultrathin film targets help determine the optimum target thickness at certain laser contrast parameters for particle acceleration and neutron generation experiment, which is also a relative measurement of shot-to-shot intensity fluctuations.

Original languageEnglish GB
Article numberS23201
JournalChinese Optics Letters
Volume12
DOIs
StatePublished - 30 Sep 2014
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

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