A promising method for studying intraband carrier dynamics in semiconductor
s is monitoring the evolution of far-infrared (FIR) absorption induced by p
hotoexcited carriers. By monitoring the photoinduced FIR absorption as a fu
nction of magnetic field, we performed time-resolved cyclotron resonance of
photocreated electrons in InSb with picosecond resolution. (C) 1999 Americ
an Institute of Physics. [S0003-6951(99)04234-5].