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Four-wave mixing and direct terahertz emission with two-color semiconductor lasers

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11 Author(s)
Hoffmann, S. ; Ruhr-University Bochum, D-44780 Bochum, Germany ; Hofmann, M. ; Brundermann, E. ; Havenith, M.
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We have observed four-wave mixing in a semiconductor laser configured to emit on two wavelengths simultaneously. The four-wave mixing sidebands exist up to 4 THz stemming from a modulation of the carrier plasma at the difference frequency of the two laser modes. In addition, we were able to generate and detect tunable THz radiation at this difference frequency from the laser device itself suggesting a scheme for a tunable THz source. © 2004 American Institute of Physics.

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Applied Physics Letters  (Volume:84 ,  Issue: 18 )