Dynamic properties of InAs/InP (311)B quantum dot Fabry-Perot lasers emitting at 1.52 mu m
14 July 2008
Dynamic properties of truly three-dimensional-confined InAs/InP quantum dot (QD) lasers obtained by molecular beam epitaxy growth on a (311)B oriented substrate are reported. The relative intensity noise and small signal modulation bandwidth experiments evidence maximum relaxation frequency of 3.8 GHz with a clear relaxation oscillation peak, indicating less damping than InAs/GaAs QD lasers. The Henry factor amounts to similar to 1.8 below threshold and increases to similar to 6 above threshold, which is attributed to band filling of the thick wetting layer. (C) 2008 American Institute of Physics.