Changing and shaping method for plate strip wave guide laser output laser beam

Abstract

Present invention relates to a strip waveguide laser outgoing laser conversion reshape method. Present invention uses two cylindrical mirror or cylindrical lens constituting one dimension directional extend beam system, making extend beam to short arm direction of rectangular cross section light beam, to form foursquare cross section light beam then utilizing two spherical reflector or spherical lens to form two-dimensional directional extend beam system, to convert foursquare cross section light beam into required size, at the same time setting one round or variety shape spatial filter on intermediate focus accessory of two spherical reflector or spherical lens, to make output beam cross section becoming circular symmetry or variety shape. Reshaped light beam can be widely used to laser technology field.

Description

technical field

[0001] The invention relates to a method for transforming and shaping the output laser beam of a laser, in particular to a method for transforming and shaping the output laser beam of a slab waveguide laser. It belongs to the field of lasers. Background technique

[0002] In the slab waveguide laser, due to the use of an unstable cavity structure, in the direction parallel to the slab waveguide, it is a wide-width quasi-parallel beam output by the unsteady cavity, and in the direction perpendicular to the slab waveguide, it is a waveguide mode with Gaussian distribution. Laser beam, the cross-section of the output laser beam is a rectangular distribution. The rectangular beam distribution limits the application of slab waveguide lasers. In many laser technology applications, the circularly symmetrical distribution of the cross-section is a very important indicator of the laser. Transforming the rectangular beam shaping into a circular symmetrical beam expan...

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