Model and Design of a Constant Modulation Current Bias Circuit for Measuring the Small Signal Response of Semiconductor Lasers

摘要

The goal of this thesis was to design a constant modulation current bias circuit for measuring the single-pole, small-signal optical response of a semiconductor laser between 1MHz and 10Hz. The results of this design will be used to conduct carrier lifetime measurements with the impedance independent optical response technique essential for determining the carrier density in the active region of the semiconductor laser, and extracting the A, B, and C coefficients of the spontaneous recombination rate equation.