Generalized rate equations and modulation characteristics of external-cavity semiconductor lasers

Publisher Website
Google Scholar
Abstract
Modulation characteristics such as the power response and the dynamic frequency shift (chirp) of an external-cavity semiconductor laser are analyzed using a set of generalized rate equations for a single longitudinal mode selected by the coupled-cavity device. The general formalism is applied to the specific case where the external cavity consists of a rod of graded-index material (GRINROD cavity). Particular attention is paid to the chirp reduction and its optimization in the presence of intercavity coupling. The results are in reasonable agreement with the recent experimental observations.