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A laser crystal structure of an intracavity frequency-doubling laser

A laser crystal and intra-cavity frequency doubling technology, which is applied in the field of lasers to achieve the effect of reducing volume, facilitating miniaturization, and facilitating mass production

Inactive Publication Date: 2011-12-28
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a laser crystal structure of an intracavity frequency doubling laser, which can solve various problems caused by the thermal effect of existing lasers, and make the intracavity frequency doubling laser easier to design and adjust

Method used

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  • A laser crystal structure of an intracavity frequency-doubling laser
  • A laser crystal structure of an intracavity frequency-doubling laser
  • A laser crystal structure of an intracavity frequency-doubling laser

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Embodiment 1

[0024] Such as figure 2 , the undoped crystal layers 2 and 4 are YVO 4 Crystal, doped crystal layer 3 is Nd:YVO 4 The crystal and the frequency doubling crystal layer 5 are KTP crystals. The undoped crystal layers 2, 4 and the doped crystal layer 3 are bonded together, and the undoped crystal layer 4 and the frequency doubling crystal layer 5 are bonded together by photoresist. The incident end is coated with an optical dielectric film with high transparency to 808nm and high reflection to 1064nm and 532nm; the output end is coated with an optical dielectric film with high reflection to 808nm and 1064nm and high transparency to 532nm.

Embodiment 2

[0026] Such as image 3 , the undoped crystal layers 2 and 4 are YAG crystals, the doped crystal layer 3 is Nd:YAG crystal, and the frequency doubling crystal layer 5 is LBO crystal. The undoped crystal layers 2, 4 and the doped crystal layer 3 are bonded together, and the undoped crystal layer 4 and the frequency doubling crystal layer 5 are bonded together by photoresist. The incident end is coated with an optical dielectric film with high transparency to 808nm and high reflection to 1064nm and 532nm; the output end is coated with an optical dielectric film with high reflection to 808nm and 1064nm and high transparency to 532nm.

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Abstract

The invention relates to a laser crystal structure of an intracavity frequency doubling laser, which includes a plurality of layer structures, which are an optical medium film layer at an incident end, an undoped crystal layer, a doped crystal layer, an undoped crystal layer, and a frequency doubling crystal layer and the optical dielectric film layer at the output end. In the present invention, the undoped crystal layer is bonded to both ends of the doped crystal layer, and the optical medium film is far away from the doped crystal, which can reduce the thermal effect and damage to the optical medium film; the undoped crystal layer is beneficial to the The mixed crystal layer and the frequency doubling crystal layer are bonded together, which facilitates the design and adjustment of the laser and greatly reduces the volume of the laser.

Description

technical field [0001] The invention relates to a laser, in particular to a structure of an intracavity frequency-doubling compound laser crystal. Background technique [0002] Solid-state lasers generally use laser crystals as the working substance. After the pump light is injected into the laser crystal and absorbed by the laser crystal, part of it is converted into laser light, and the other part is converted into heat, resulting in a thermal effect. The thermal effect will generate temperature gradient and end face deformation inside the laser crystal, forming a thermal lens effect, which will affect the stability of the laser; the laser crystal will expand and contract with heat and contract, which will cause stress and easily damage the crystal; the temperature rise of the crystal surface is large, resulting in damage to the surface dielectric film . Intracavity frequency-doubling lasers are generally used separately from laser crystals and frequency-doubling crystals...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/07
Inventor 王云征王静轩张丽强卓壮
Owner SHANDONG UNIV
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