Side surface pumped thin disk laser and method for making same

A thin-sheet laser and side-pumped technology, which is applied in lasers, laser components, phonon exciters, etc., can solve the problems of low edge pumping efficiency and low laser efficiency, and achieve simple structure, low cost, and mechanical stability Good results

Inactive Publication Date: 2005-09-21
BEIJING UNIV OF TECH
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Problems solved by technology

But the YAG crystal sheet 13 doped with Yb only absorbs part of the pump light, and the pump light and the oscillation laser in the YAG crystal sheet 13

Method used

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  • Side surface pumped thin disk laser and method for making same
  • Side surface pumped thin disk laser and method for making same
  • Side surface pumped thin disk laser and method for making same

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[0038] The design drawing of the present invention is as follows image 3 shown. The center is a doped gain medium circular thin crystal, the outside is a regular hexagonal non-doped irregular structure crystal, there is a cylindrical hole in the center, the outer regular hexagon is thick, and the middle cylindrical hole is thin, and its symmetrical section is a symmetrical isosceles trapezoid. Yb:YAG crystal is selected as the cylindrical flake crystal of doped gain medium. YAG is selected for the undoped irregular structure crystal. The doped gain medium wafer crystal (with a doping concentration of 3 at%) and the undoped irregular structure crystal are tightly bonded by thermal bonding.

[0039] The preparation method of the doped gain medium wafer crystal and the non-doped irregular structure crystal is as follows: the first step, the two bottom surfaces (thickness 1.0mm) of the doped gain medium wafer crystal and the side surface (diameter 5mm positive) of the wafer cry...

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Abstract

A solid laser contains LD array, heat sink adhered crystal chip, coupling output mirror, wherein the crystal chip has gain medium doped column shape thin crystal in center and regular n-polygon non-doped irregular structure crystal in outside, which has a column hole in center, n is not less than 6 and is even number, the surface of column shape thin crystal plated with oscillation all reflection film and adhered with micro-pass cooling heat sink, n number of LD arrays fixed on outside of non-doped irregular structure crystal. Said invention has high laser power output, simplified pumping optical structure, fine mechanical stability and radiation ability.

Description

Technical field: [0001] A side-pumped thin-film laser and a preparation method thereof belong to the technical field of solid-state lasers. Background technique: [0002] Semiconductor-pumped solid-state lasers are widely used in information processing, medical treatment, material processing and national defense. Semiconductor-pumped solid-state lasers include fiber lasers, rod lasers, slab lasers, and thin-film lasers. [0003] With the continuous progress of semiconductor technology and the reduction of cost, semiconductor-pumped solid-state lasers have developed rapidly, and the continuous output of both traditional round rod and slab lasers has reached 1000W. But in general high-power rod-shaped solid-state lasers, the thermal lensing effect and thermally induced stress birefringence produced by the laser crystal during pumping are serious problems. In order to reduce the thermal lensing effect, lasers with structures such as slabs and sheets have been developed. Howe...

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Application Information

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IPC IPC(8): H01S3/042H01S3/16
Inventor 李强房明星丁小艇
Owner BEIJING UNIV OF TECH
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