Generation and detection of tunable ultrashort infrared and far-infrared radiation pulses of high intensity |
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Authors: | P. T. Lang W. J. Knott I. Leipold K. F. Renk A. D. Semenov G. N. Gol'tsman |
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Affiliation: | 1. Institut für Angewandte Physik, Universit?t Regensburg, W-8400, Regensburg, Germany 2. Physics Department, State Pedagogical University, 119435, Moscow, USSR
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Abstract: | We report on generation and detection of intense pulsed radiation with frequency tunability in the infrared and far-infrared spectral regions. Infrared radiation is generated with a transversally electrically excited high pressure CO2 laser. A laser pulse of a total duration of about 300 ns consisted, due to self mode locking, of a series of single pulses, some with pulse durations of less than 450 ps and peak powers larger than 20 MW. Using these pulses for optical pumping of a Raman D2O laser, trains of short far-infrared pulses with durations less than 400 ps were obtained. For detection a new ultrafast superconducting detector was used. |
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