Stable subpicosecond infrared pulses in the spectral region of 4.5–11.5 µm are generated by difference-frequency mixing in AgGaS2. The system uses femtosecond pulses from a Ti:sapphire regenerative amplifier and from a tunable traveling-wave dye laser. The infrared pulses have a duration of 400 fs, an energy of more than 10 nJ, and a repetition rate of 1 kHz.
© 1993 Optical Society of America
P. Hamm, C. Lauterwasser, and W. Zinth, "Generation of tunable subpicosecond light pulses in the midinfrared between 4.5 and 11.5 µm," Opt. Lett. 18, 1943-1945 (1993)