1. Weierstra?-Institut für Angewandte Analysis und Stochastik, Mohrenstr. 39, 10117, Berlin, Germany 2. Ferdinand Braun Institut für H?chstfrequenztechnik, Gustav-Kirchhoff-Str. 4, 12489, Berlin, Germany
Abstract:
Theoretical and experimental investigations have been carried out to study the spectral and spatial behavior of monolithically integrated distributed-feedback tapered master-oscillators power-amplifiers emitting around 973 nm. Introduction of self and cross heating effects and the analysis of longitudinal optical modes allows us to explain experimental results. The results show a good qualitative agreement between measured and calculated characteristics.