Ultrafast dynamics in field-enhanced saturable absorbers
نویسندگان
چکیده
Absorption recovery dynamics of GaAs/AlGaAs field-enhanced waveguide saturable absorbers-are studied by pump-probe differential transmission measurements. We c;ompare the response of-bulk and single quantum well absorbers at different reverse bias levels and pump powers, and find an ultrafast transient in the response, followed by a slower rise before the final recovery. The absorption fully recovers after a few picoseconds, which is an important result for mode-locked lasers:-
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تاریخ انتشار 1999