Double single-ended pumped double-rod cascaded solid-state laser

Abstract

The invention discloses a double single-ended pumped two-rod series connection solid state laser. The double single-ended pumped two-rod series connection solid state laser comprises a first laser crystal, a first semiconductor laser pump source, a first pump light recycling device, a first thermal compensation negative lens, a second laser crystal, a second semiconductor laser pump source, a second pump light recycling device and a second thermal compensation negative lens; the first semiconductor laser pump source and the first pump light recycling device are formed into an excitation device of the first laser crystal; the second semiconductor laser pump source and the second pump light recycling device are formed into an excitation device of the second laser crystal. The double single-ended pumped two-rod series connection solid state laser has the advantages of improving the luminous efficiency of the laser due to the fact that pump light through the laser crystals is recycled through the pump light recycling devices; further improving the output power and stability of the laser due to the fact that compensation is performed on the thermal lens effect of the laser crystals through the thermal compensation negative lenses; achieving high-efficiency and high-output-power stable operation of the solid state laser.

Description

technical field [0001] The invention relates to a laser, in particular to a double-single-end pumped double-rod serial connection solid-state laser. Background technique [0002] Semiconductor end-pumped solid-state lasers are simple in structure, small in size, good in beam quality, stable in operation, and easy to integrate, so they are widely used in laser marking, laser scribing, precision resistance adjustment, laser cleaning, and laser engraving and other laser processing industries . [0003] With the continuous improvement of industrial applications for laser processing effect and processing efficiency, the market's requirements for laser output power are also getting higher and higher. Because the absorption coefficient of the laser crystal to the 808nm semiconductor laser is too large, a very small laser crystal can also absorb a very large pump power of the semiconductor laser. The pump power absorbed by the laser crystal can be extracted through the laser reson...

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to solve the problem of improving the output power of the semiconductor laser while affecting the light extraction efficiency of the laser due to the low absorption coefficient of the laser crystal for the pump light, and the laser crystal will not burst due to the increase in heat

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