A double-disk gain crystal double-bonded YAG DC-cooled thin-disk laser

Abstract

The invention relates to the technical field of laser and discloses a double-disk gain crystal double-bonded YAG once-through cooling thin disk laser. A double-thin-disk crystal structure having a left gain crystal and a right gain crystal is used. The left gain crystal and the right gain crystal constitute a double-bonded structure. The light of a left pumping system and a right pumping system are focused on the right bonding layer of the left gain crystal and the left bonding layer of the right gain crystal respectively by a deflecting mirror. A once-through cooling system cools the right bonding layer of the left gain crystal and the left bonding layer of the right gain crystal. A resonant cavity consists of an aspheric parabolic mirror and a spherical double concave mirror. The aspheric parabolic mirror is coaxial with the left gain crystal and the right gain crystal. The double-bonded and double-thin-disk structure compensates for the optical distortion caused by a thermal effectand improves the beam quality of the output laser. In addition, the double-bonded front bonding body effectively suppresses the excited spontaneous emission of the crystal, and the rear bonding body ensures the once-through cooling of the crystal.

Description

Technical field [0001] The invention relates to the field of laser technology, in particular to a double-disk gain crystal double-bonded YAG DC-cooled sheet laser. Background technique [0002] The all-solid-state laser is to pump the light of the semiconductor laser onto the solid-state laser medium to emit laser light. Since the thermal distribution gradient of the laser medium of the YAG thin slice laser is along the axial direction of the crystal and parallel to the axial direction of the output laser, the thermal effect on the crystal surface is effectively reduced, the beam quality of the output laser is improved, and the solid laser is high Average power, high working efficiency, high beam quality, high peak power. However, the shape of the working material of the traditional solid-state laser is rod-shaped or slab, while the thickness of the working material of the sheet laser is only 0.3-0.5mm. This pumping method largely solves the problem of crystal thermal effect of ...

AI Technical Summary

Problems solved by technology

However, the shape of the working substance of the traditional solid-state laser is rod or slab, while the thickness of the working substance of the thin-sheet laser is only 0.3-0.5mm. This pumping method largely solves the crystal thermal effect problem of the solid-state laser

With increasing pump power, the thermal distortion of the solid-state gain medium is very severe, resulting in reduced output power and poor beam quality

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