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Multiterahertz frequency conversion of a picosecond pulse train using nonlinear gain dynamics in a 1.5 mu m MQW semiconductor laser amplifier

: Schnabel, R.; Pieper, W.; Ludwig, R.; Weber, H.G.


Electronics Letters 29 (1993), No.9, pp.821-2
ISSN: 0013-5194
Journal Article
Fraunhofer HHI ()
laser beam applications; multiwave mixing; optical frequency conversion; optical switches; semiconductor lasers; multiple quantum well; thf; nonlinear optics; picosecond pulse train; nonlinear gain dynamics; mqw; semiconductor laser amplifier; frequency conversion; four-wave mixing; ultrafast time regime; picosecond optical pulses; optically switched optical gate; ultrafast optical gate; 3.8 thz; 1.5 micron; 30 ps

The femtosecond nonlinear gain dynamics in semiconductor laser amplifiers were used for the 3.8 THz frequency conversion of 30 ps pulses by four-wave mixing. The experiments demonstrate that the ultrafast time regime associated with the nonlinear gain dynamics in a semiconductor laser amplifier (SLA) may be used for the frequency conversion of picosecond optical pulses. The four-wave mixing arrangement also offers the potential to operate as an optically switched optical gate. Consequently, the experiments elucidate the feasibility of operating the SLA as an ultrafast optical gate.