End-pumped double-module double-crystal high-power nanosecond ultraviolet laser

Abstract

The invention discloses an end-pumped double-module double-crystal high-power nanosecond ultraviolet laser, which comprises a first light path device and a second light path device; wherein the first light path device comprises a first pumping source, a first coupling cylinder, a first dichroscope, a first laser crystal and a first total reflective mirror; the second light path device comprises a second pumping source, a second coupling cylinder, a second dichroscope, a second laser crystal, a third harmonic generation crystal, a second harmonic generation crystal and a second total reflective mirror. The nanosecond ultraviolet laser is reasonable in design, simple to debug and high in frequency doubling efficiency, and high-efficiency output of fundamental frequency light is ensured by a relatively large mode volume.

Description

technical field [0001] The invention relates to the technical field of lasers, in particular to an end-pumped double-module double-crystal high-power nanosecond ultraviolet laser. Background technique [0002] Existing nanosecond ultraviolet high-power solid-state lasers on the market, when end-pumped, the heat accumulated in the laser crystal will cause a thermal lens effect, and may also cause unrecoverable stress cracks in the crystal, which limits the pumping power injected into the crystal. size. Using bonded crystals or a special crystal heat dissipation structure can improve this problem to a certain extent, but it will bring problems of high cost and complex structure. With the continuous upgrading of laser processing equipment, the power requirements for nanosecond ultraviolet lasers are getting higher and higher. Therefore, it is urgent to design a high-power nanosecond ultraviolet laser that can solve the above technical problems. Contents of the invention ...

AI Technical Summary

Problems solved by technology

[0002] Existing nanosecond ultraviolet high-power solid-state lasers on the market, when end-pumped, the heat accumulated in the laser crystal will cause a thermal lens effect, and may also cause unrecoverable stress cracks in the crystal, which limits the pumping power injected into the crystal. size

Using bonded crystals or a special crystal heat dissipation structure can improve this problem to a certain extent, but it will bring problems of high cost and complex structure

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