Method of mitigating thermal lens effect of laser crystal

A thermal lens effect and laser crystal technology, applied in the field of lasers, can solve the problems of incomplete thermal lens effect, affecting the quality of laser beams, complicated processes, etc., to offset the thermal lens effect, reduce the thermal lens effect, and reduce the space of the optical cavity. Effect

Inactive Publication Date: 2020-11-03
SHENZHEN HYMSON LASER INTELLIGENT EQUIP CO LTD
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Problems solved by technology

The thermal lens effect has a great influence on the focus of the laser, which will eventually affect the beam quality of the laser output
An existing method to reduce the thermal lens effect is to increase the corresponding concave lens at the appropriate position to reduce the thermal lens effect. This method increases the space of the optical cavity due...

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  • Method of mitigating thermal lens effect of laser crystal
  • Method of mitigating thermal lens effect of laser crystal
  • Method of mitigating thermal lens effect of laser crystal

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Embodiment Construction

[0026] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0027] In the description of the present invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc. indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only In order to facilitate the description of the present invention and simplify the description, it does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific ori...

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Abstract

The invention discloses a method for reducing the thermal lens effect of a laser crystal, and the method is characterized in that the method comprises the following steps: carrying out the pumping ofthe laser crystal; when the number of the pump light source is one, setting one surface of the laser crystal as a concave curved surface; when the number of the pump light sources is two, setting thetwo surfaces of the laser crystal to be concave curved surfaces. The method can counteract the thermal lens effect by changing the structural shape of the laser crystal.

Description

technical field [0001] The invention relates to the technical field of lasers, in particular to a method for alleviating thermal lens effects of laser crystals. Background technique [0002] Solid-state lasers have the advantages of high brightness, high efficiency, compact structure, stable performance, long life and full solidification, and have important applications in materials processing and other fields. [0003] During laser operation, such as Figure 1-2 The traditional laser crystal shown will show thermal lens effect: when the laser crystal is pumped, due to the heat dissipation fluid on the periphery, the center temperature is higher than the surrounding, forming a temperature gradient, and then forming a refractive index gradient. When the light passes through and converges toward the center, the form a convex lens. The thermal lens effect has a great influence on the focus of the laser, which will eventually affect the beam quality of the laser output. An exi...

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Application Information

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IPC IPC(8): H01S3/06H01S3/09H01S3/13
CPCH01S3/0615H01S3/09H01S3/13
Inventor 周宇超赵盛宇张松岭林国栋毛俊波刘奇福
Owner SHENZHEN HYMSON LASER INTELLIGENT EQUIP CO LTD
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