Analysis of Intrinsic Saturable Absorption in InGaAs/InP Diode Lasers

Abstract
The authors have developed a theory, based on a saturable absorption model due to intervalence-band transitions, to explain the observed acoustic signal and light-output-current characteristics in InGaAsP/InP diode lasers. The experimental results are explained satisfactorily by the present theory. The saturated loss coefficient, estimated from our theory, is in good agreement with the internal loss coefficient in the good lasing region determined from the frequency of transient relaxation oscillation in InGaAsP/InP diode lasers by Walpole et al.