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Two-colour operation of a free-electron laser and applications in the mid-infrared

Prazeres, R. and Glotin, F. and Insa, C. and Jaroszynski, D.A. and Ortega, J.M. (1998) Two-colour operation of a free-electron laser and applications in the mid-infrared. European Physical Journal D: Atomic, Molecular, Optical and Plasma Physics, 3 (1). pp. 87-93. ISSN 1434-6060

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Abstract

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.