Corrections to "Influence of probe depletion and cross-gain modulation on four-wave mixing of picosecond optical pulses in semiconductor optical amplifiers"

In the above letter,1 an erroneous expression was given for the parameter β´_2j. The appropriate expression is provided here. The authors thank Dr. S.R. Chinn from MIT Lincoln Laboratory, Lexington, MA, USA, for drawing their attention to this error.