Laser Assembly

摘要

The invention relates to a laser assembly with a converter designed as a fiber laser for generating a converted output laser beam, and having a pumping source that supplies a pump beam to the converter and includes a plurality of laser diodes that generate the pump beam and are formed by emitters mounted on laser bars, the pumping source having beam forming optics for forming the laser beams supplied by the emitters into the pump beam.

主权项

1. A laser assembly with a converter constituted as a converter fiber laser for generating converted laser output radiation and with a pumping source which delivers pumping radiation for the converter and comprises a plurality of laser diodes generating the pumping radiation, which are each constituted by emitters on laser bars, wherein the pumping source comprises beam-forming optics for forming the laser beams delivered from the emitters into the pumping radiation, wherein the emitters on at least two laser bars are provided following one another in a first axial direction (Y axis) corresponding to a slow axis, and which are disposed with their active layers each in a plane (XY plane) which includes the first axis (Y axis) and a second axis (X axis) normal thereto, are disposed on top of one another in at least one diode laser stack in a third axis (Z axis) which corresponds to a fast axis and which is orientated normal to the first and second axis, and that the beam-forming optics comprises in a beam path following the diode laser stack a first optical device for spreading the laser beams delivered by the emitters of each laser bar in the third axis and, following the first optical device, a second optical device, with which the spread optical beams of all the laser bars are recombined by being pushed on top of one another in the direction of the first axis (Y axis) to form a laser beam bundle and that the converter fiber is accommodated in the interior of a sleeve-like sheathing through which a cooling medium can flow.