Chirped pulse Raman amplification in plasma: high gain measurements

G. Vieux, X. Yang, A. Lyachev, B. Ersfeld, J. Farmer, E. Brunetti, Samuel Wiggins, R. Issac, G. Raj, D. A. Jaroszynski, DA Jaroszynski (Editor), A Rousse (Editor)

Research output: Contribution to conferencePaper

2 Citations (Scopus)
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Abstract

High power short pulse lasers are usually based on chirped pulse amplification (CPA), where a frequency chirped and temporarily stretched ``seed'' pulse is amplified by a broad-bandwidth solid state medium, which is usually pumped by a monochromatic ``pump'' laser. Here, we demonstrate the feasibility of using chirped pulse Raman amplification (CPRA) as a means of amplifying short pulses in plasma. In this scheme, a short seed pulse is amplified by a stretched and chirped pump pulse through Raman backscattering in a plasma channel. Unlike conventional CPA, each spectral component of the seed is amplified at different longitudinal positions determined by the resonance of the seed, pump and plasma wave, which excites a density echelon that acts as a "chirped'" mirror and simultaneously backscatters and compresses the pump. Experimental evidence shows that it has potential as an ultra-broad bandwidth linear amplifier which dispenses with the need for large compressor gratings.
Original languageEnglish
DOIs
Publication statusPublished - 2009
EventConference on Harnessing Relativistic Plasma Waves as Novel Radiation Sources From Terahertz to X-Rays and Beyond - Prague, Czech Republic
Duration: 21 Apr 200923 Apr 2009

Conference

ConferenceConference on Harnessing Relativistic Plasma Waves as Novel Radiation Sources From Terahertz to X-Rays and Beyond
CountryCzech Republic
CityPrague
Period21/04/0923/04/09

Keywords

  • laser-plasma interaction
  • Raman amplification
  • plasma channel

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