Femtosecond Pulses in the Medium Infrared by Down-Conversion of a Traveling Wave Dye Laser
Parametric frequency conversion in nonlinear crystals represents a widely applied technique to generate ultrashort pulses in the wavelength range between 1 and 10 µm . Subpicosecond infrared pulses have been obtained by difference frequency mixing of amplified pulses from femtosecond dye lasers with part of a white light continuum . In this paper, we present a novel parametric device to produce femtosecond pulses around 5 µm with a repetition rate of 8 kHz and a higher efficiency and stability than previously reported.
KeywordsFemtosecond Pulse Nonlinear Crystal Copper Vapor Laser White Light Continuum Wave Cell
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- P.C. Becker, D. Gershoni, and A. Prosser, Ultrafast Phenomena VII, Postdeadline paper PD 13Google Scholar