Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
A proposal for multi-tens of GW fully coherent femtosecond soft X-ray lasers
Year:2012
Research Areas
  • Engineering
Information
Abstract
X-ray free-electron lasers1,2 delivering up to 131013 coherent photons in femtosecond pulses are bringing about a revolution in X-ray science3?5. However, some plasma-based soft X-ray lasers6 are attractive because they spontaneously emit an even higher number of photons (131015), but these are emitted in incoherent and long (hundreds of picoseconds) pulses7 as a consequence of the amplification of stochastic incoherent self-emission. Previous experimental attempts to seed such amplifiers with coherent femtosecond soft X-rays resulted in as yet unexplained weak amplification of the seed and strong amplification of incoherent spontaneous emission8. Using a time-dependent Maxwell?Bloch model describing the amplification of both coherent and incoherent soft X-rays in plasma, we explain the observed inefficiency and propose a new amplification scheme based on the seeding of stretched high harmonics using a transposition of chirped pulse amplification to soft X-rays. This scheme is able to deliver 531014 fully coherent soft X-ray photons in 200 fs pulses and with a peak power of 20 GW.
International
Si
JCR
Si
Title
Nature Photonics
ISBN
1749-4885
Impact factor JCR
29,278
Impact info
Volume
6
Journal number
11
From page
764
To page
767
Month
NOVIEMBRE
Ranking
Participants
  • Autor: E. Oliva
  • Autor: Pedro Velarde Mayol (UPM)
  • Autor: M. Fajardo
  • Autor: L. Li
  • Autor: L. Pittman
  • Autor: T.T.T. Le
  • Autor: J. Gauthier
  • Autor: G. Lambert
  • Autor: D. Ros
  • Autor: S. Sebban
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Fusión Nuclear Inercial y Tecnología de fusión
  • Departamento: Ingeniería Nuclear
  • Centro o Instituto I+D+i: Instituto de Fusión Nuclear
S2i 2020 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)