HIGH EFFICIENCY, HIGH POWER DIRECT DIODE LASER SYSTEMS AND METHODS THEREFOR

摘要

A direct diode laser system (400) includes N laser head assemblies (LHAs) (400A, 400B, etc.) generating N output beams and generating N received output beams, and a torch head (500) recollimating and focusing the N received output beams onto a single spot. Preferably, each of the laser head assemblies (400A, 400B, etc.) of the direct diode laser system (400) includes M modules generating M laser beams, wherein each of the M laser beams has a corresponding single wavelength of light, M-1 dichroic filters (420), wherein each of the M-1 dichroic filter (420) transmits a corresponding one of the M laser beams and reflects all other wavelenghts, and a fiber coupling device (460, 462, 464, 466) collecting the M laser beams to produce a respective one of the N output beams. In an exemplary case, the M-1 dichroic filters (420) function as band pass filters. A method of generating a high fluence, high power laser beam is also described.