Abstract
Semiconductors are of interest for fast optical devices because they possess relatively strong subpicosecond carrier-heating nonlinearities. However, these effects cannot be decoupled from the slower inter-band relaxation.1 It is possible to bypass the slower processes altogether by coherent control of the excited population. This has been demonstrated in exciton systems at 4 K temperatures.2 For room-temperature coherent control, semiconductor lasers are promising candidates because they offer a long optical coherence time and can provide gain for the optical signal.
© 2001 Optical Society of America
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