https://doi.org/10.1007/s100530050151
Two-colour operation of a Free-Electron Laser and applications in the mid-infrared
1
LURE, btiment 209d, Université
de Paris-Sud, 91405 Orsay Cedex, France
2
University of Strathclyde,
Department of Physics and Applied Physics,
Glasgow G4 ONG, UK
Corresponding author: a prazeres@lure.u-psud.fr
Received:
4
November
1997
Accepted:
10
April
1998
Published online: 15 July 1998
The two-colour operation of a Free-Electron Laser (FEL) has been demonstrated
with the "CLIO" infrared facility. A two section undulator allows the production of
picosecond laser pulses at two different wavelengths
and 
simultaneously, in a
wavelength range from 
to
, and with a wavelength separation of two
colours of up to 
. The time overlap, between both colours, has been
measured on a picosecond time scale and on a microsecond time scale. An initial
pump-probe application experiment has been
performed with the two colours: stimulated
emission has been measured in a 3-level Quantum-Well system. This is the best
demonstration of the stability and reliability of the two-colour laser operation.
PACS: 41.60.Cr – Free-electron lasers / 42.60.Fc – Modulation, tuning, and mode locking
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 1998
