Tunable source of terahertz radiation using molecular modulation.
We describe a source of terahertz (THz) radiation that is based on Raman down-shifting of an infrared laser beam using highly coherent molecular vibrations. The source can operate in either the pulsed or the continuous wave (CW) regime and is tunable over much of the THz region of the spectrum (1-10 THz). In the pulsed regime, we predict average output powers of order 10 mW and peak powers approaching 1 MW. In the CW regime, average powers exceeding 100 μW with spectral linewidths at the hertz level are achievable.
Department of Physics, 1150 University Avenue, University of Wisconsin at Madison, Madison, Wisconsin 53706, USA. yavuz@wisc.edu
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Weber