Laser beam combination apparatus

A laser beam combination apparatus, comprising:

• a lasers array, an optical turning element, a transformation lens, a dispersion element, and an external cavity mirror;
• the lasers array comprises M rows of lasers, and each row of the lasers comprises N lasers, wherein both M and N are positive integers greater than 1;
• M×N laser beams output by the lasers array, after passing through the optical turning element, parallel exit, wherein the N laser beams corresponding to each row of the lasers constitute a coplanar laser beam array, planes where M laser beam arrays lie are parallel to one another, and planes where two adjacent laser beam arrays lie are spaced apart by a designated distance;
• the M laser beam arrays incident on the transformation lens, and the N laser beams in each laser beam array, after converged by the transformation lens, individually incident on the dispersion element at different angles;
• and
• the N laser beams in each laser beam array, after going through the dispersion element, are combined into an output beam, and M output beams corresponding to the M laser beam arrays are parallel output through the external cavity mirror.