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Title: Plasma lenses for ultrashort multi-petawatt laser pulses

An ideal plasma lens can provide the focusing power of a small f-number, solid-state focusing optic at a fraction of the diameter. An ideal plasma lens, however, relies on a steady-state, linear laser pulse-plasma interaction. Ultrashort multi-petawatt (MPW) pulses possess broad bandwidths and extreme intensities, and, as a result, their interaction with the plasma lens is neither steady state nor linear. Here, we examine nonlinear and time-dependent modifications to plasma lens focusing, and show that these result in chromatic and phase aberrations and amplitude distortion. We find that a plasma lens can provide enhanced focusing for 30 fs pulses with peak power up to ∼1 PW. The performance degrades through the MPW regime, until finally a focusing penalty is incurred at ∼10 PW.
Authors:
; ; ; ; ; ; ;  [1]
  1. Naval Research Laboratory, Washington DC 20375-5346 (United States)
Publication Date:
OSTI Identifier:
22489946
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 22; Journal Issue: 12; Other Information: (c) 2015 U.S. Government; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ELECTROMAGNETIC LENSES; FOCUSING; INTERACTIONS; LASERS; NONLINEAR PROBLEMS; PEAK LOAD; PETAWATT POWER RANGE; PLASMA; PULSES; STEADY-STATE CONDITIONS; TIME DEPENDENCE