Silberberg Y, Smith P W, Eilenberger D J, Miller D A, Gossard A C, Wiegmann W
Opt Lett. 1984 Nov 1;9(11):507-9. doi: 10.1364/ol.9.000507.
By using a GaAs/GaAIAs multiple-quantum-well sample as a saturable absorber in an external resonator, we have passively mode locked a GaAs laser to obtain pulses as short as 1.6 psec, the shortest pulses ever observed to our knowledge from a mode-locked diode laser in a regulator pulse train.