The Intrinsic Frequency Response of 1 . 3 - m InGaAsN Lasers in the Range T = 10 C – 80 C

Optical modulation response experiments above threshold are carried out in ridge waveguide InGaAs and InGaAsN (N = 0:5%) in a temperature span of 10 C–80 C. The modulation traces are analyzed with a complete rate equation model that allows extraction of the resonance frequency and damping that are intrinsic to the carrier and photon processes occurring in the laser active region. This analysis enables calculation of the K-factor and its temperature behavior. K-values for InGaAsN lasers are larger and show a more pronounced dependence on temperature than in InGaAs lasers. This behavior is ascribed to a decrease in the effective differential gain with nitrogen content.