D. Botkin et al., ULTRAFAST DYNAMICS OF THE OPTICAL-MODE OF A 1.5-MU-M MULTIPLE-QUANTUM-WELL OPTICAL AMPLIFIER, Applied physics letters, 64(21), 1994, pp. 2861-2863
Time-resolved measurements of the mode profile of semiconductor multip
le quantum well amplifiers reveal ultrafast dynamic changes which cont
ribute to the nonlinear gain of such devices.