Abstract
The reflectivity spectra of 808 nm/980 nm double band mirror(DBM) are characterized in the paper.According to the structure of the DBM,the thermal model of Optically Pumped Vertical-External-Cavity Surface Emitting Semiconductor Lasers(OPS-VECSELs) with DBM is constructed and the distribution of thermal load in the VECSEL wafer is presented.The thermal characterization of OPS-VECSELs with DBM is analyzed in detail by finite element method.The results indicate that VECSEL wafer with DBM has better thermal properties and poorer thermal performance than with DBM when they have the same reflectivity(R=99.96%).So VECSEL wafer with DBM is more suitable for making high power semiconductor laser than with DBM.The theoretical analysis results will be provided as theory reference for VECSEL wafer structure optimization and experimental.
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