Novel high-power strip laser system

Abstract

The invention relates to a novel high power slab laser system. The high power slab laser system comprises a laser cavity and an interstage beam expanding compensation lens; the laser cavity is composed of a laser oscillator C1, a preamplifier C2 and a main amplifier C3, two neodymium glass laser medium slabs which are parallel with each other and have the same size, material and property are respectively put into an embraced ceramic diffuse reflection cavity composed of the laser oscillator, the preamplifier and the main amplifier, both pumping and cooling use a mirror symmetry mode, and a laser beam goes into the other neodymium glass slab through three refractions; and an interstage beam expanding compensation lens is arranged among the laser oscillator, the preamplifier and the main amplifier. The high power slab laser system has the advantages of improving the output laser beam quality, obtaining high power laser beam, having long service life of a xenon lamp and improving the beam quality of the laser beam.

Description

technical field [0001] The present invention relates to the fields of laser processing, laser material surface treatment, laser radar and photoelectric countermeasures, and particularly refers to a new type of high-power (gigawatt-level) slab laser system, especially suitable for laser systems that meet the following operating conditions: high High quality beam with repetition rate, high power, long xenon lamp life, low amplification spontaneous emission (ASE), weak wavefront distortion. Background technique [0002] With the continuous development of laser technology, high-power lasers have been more and more widely used due to their advantages such as high efficiency, long life, small size, and convenient use and maintenance. In civil, military, and space communications, factors such as repetition rate, pulse width, and beam quality of high-power solid-state lasers will directly affect the accuracy and efficiency of processing. In the design of solid-state lasers, thermal...

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Problems solved by technology

At present, the concentrating cavity is mainly made of glass or metal, but such a concentrating cavity has inhomogeneity in pumping, coupled with the high thermal effect caused by the large injection, it will cause serious thermal distortion of the working medium, resulting in a decrease in efficiency , resulting in the inhomogeneity of the laser output, which affects the quality of the laser output beam, and is not conducive to the high-power amplification system

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