A method, an apparatus, and a module for producing dual beam from a single
laser diode provide for means of simultaneously pumping two individual
gain media with orthogonal polarizations. A beam splitter splits the
emissive laser beam into two portions based on the polarization. A
polarization control element or mechanism adjusts the polarization and
the intensity ratio of the separated beam portions. Applications to
monolithic microchip lasers include generating new wavelengths based on
intracavity beam combining and mixing.