Spectral beam combining of Yb-doped fiber lasers using wavelength dependent polarization rotators and polarization beam combiners

摘要

We propose a robust spectral beam combining scheme using wavelength dependentpolarisation rotators and polarization beam combiners. We successfullydemonstrated the concept for two Yb-doped fiber lasers at 1064nm and 1092nm upto a total input power of 90W. The results reveal a very good combiningefficiency and the potential for scaling to high power operations in thismethod of beam combining.