MULTI-PASS SLAB LASER WITH INTERNAL BEAM SHAPING

摘要

The laser resonator includes a first resonator wall, a second resonator wall that is substantially parallel to the first resonator wall and is separated from the first resonator wall in a first transverse direction thereby defining a gap having a gap width between the first and second resonator walls, and at least two laser cavity mirrors. The laser cavity mirrors are arranged to allow an intra-cavity laser beam to reflect from the output coupling mirror thereby forming a first beam spot on the output coupling mirror. The first curved mirror has a radius of curvature such that the reflection of the intra-cavity laser beam from the first curved mirror causes the first beam spot on the output coupling mirror to have a substantially symmetric shape.

主权项

1. A laser resonator comprising:
a first resonator wall; a second resonator wall that is substantially parallel to the first resonator wall and is separated from the first resonator wall in a first transverse direction thereby defining a gap having a gap width between the first and second resonator walls; a plurality of laser cavity mirrors comprising:
an output coupling mirror disposed at a first end of the first and second resonator walls;a first curved mirror disposed at the first end of the first and second resonator walls;a folding mirror disposed at the second end of the first and second resonator walls; anda satellite mirror disposed at the first end of the first and second resonator walls, andwherein the first curved mirror is disposed at the first end of the first and second resonator walls and is disposed between the output coupling mirror and the satellite mirror, wherein the plurality of laser cavity mirrors are arranged to allow an intra-cavity laser beam to reflect from the output coupling mirror thereby forming a first beam spot on the output coupling mirror; wherein the plurality of laser cavity mirrors are arranged to allow the intra-cavity laser beam to reflect from the first curved mirror thereby forming a second beam spot on the first curved mirror, and wherein the first curved mirror has a radius of curvature such that the reflection of the intra-cavity laser beam from the first curved mirror causes the first beam spot on the output coupling mirror to have a substantially symmetric shape.