Double-sided conduction cooling multi-sheet laser head

Abstract

The embodiment of the invention provides a double-sided conduction cooling multi-sheet laser head. The double-sided conduction cooling multi-sheet laser head comprises a gain medium, a heat sink, a cooling metal, a first contact object between the gain medium and the heat sink, and a second contact object between the heat sink and the cooling metal. Both the gain medium and the heat sink are sheet-shaped and are separately arranged in parallel at intervals. The cooling metal is arranged at the peripheries of the gain medium and the heat sink, the cooling temperature is constant, and the centers of the gain medium and the heat sink are coaxial. The plane of the gain medium is vertical to the central axis, the edge of the gain medium is connected with the edge of the heat sink through the first contact object, and the edges of the two surfaces of the heat sink are connected with the inner wall of the cooling metal through the second contact object. The double-sided conduction cooling multi-sheet laser head provided by the embodiment of the invention has the advantages that the gain medium has no special requirements for gradual change, interval or gradient doping and the like, the cooling action process is simple, the structure is compact, and the heat dissipation effect is good, and the high-power output of a multi-sheet laser is facilitated.

Description

technical field [0001] The invention relates to the field of laser technology, in particular to a double-sided conductive cooling multi-chip laser head. Background technique [0002] In order to meet the requirements of higher power laser output and compact structure, especially under the traction of laser fusion, high-power all-solid-state lasers based on multi-flake structures have attracted extensive attention. This structure adopts discrete multi-flake gain medium, which can provide high gain, and the waste heat in the medium can be effectively removed by low-temperature helium or direct liquid cooling to ensure the normal operation of the laser. [0003] In the prior art, for laser amplifiers cooled by low-temperature helium gas, lamination gain media with gradient and interval doping or gradient doping are mostly used, while liquid direct cooling of thin-film solid-state laser media is to directly immerse the thin-film gain medium into the cooling liquid , the laser d...

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Problems solved by technology

[0004] However, when low-temperature cooling is used, the gain medium mostly uses laminations with gradient and spaced doping or gradient doping, which undoubtedly increases the difficulty and complexity of the preparation of the gain medium; when direct liquid cooling is used, since the laser directly penetrates Supercooled liquid, the flow field characteristics, thermodynamic characteristics and various optical characteristics in laser oscillation are coupled with each other, making the action process complicated

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