Multiple pairs of single-tube beam-combining semiconductor laser devices with respective beam splitters in ladder configuration

The invention discloses multiple pairs of single-tube beam-combining semiconductor laser devices with respective beam splitters in ladder configuration, and belongs to the technical field of semiconductor laser devices. A light beam in the prior art is poor in quality. The multiple pairs of single-tube beam combining semiconductor laser devices are characterized in that one single-tube semiconductor laser device is arranged on each step of the two ladder heat sinks; a pair of single-tube semiconductor laser devices on the steps, at the same height, of two ladder heat sinks is opposite in light emitting direction and the optical axes are overlapped with each other; one beam splitter is arranged in the middle of a light path between each pair of single-tube semiconductor laser devices; the surface of each beam splitter and the optical axis of an output light of each single-tube semiconductor laser device form an angle of 45 degrees; the optical axes of each pair of single-tube semiconductor laser devices are pa