Device for improving asymmetric thermal focal distances of asymmetric heating panel strip-shaped laser
A cooling plate and laser technology, applied in the field of lasers, can solve problems such as the reduction of the stable range of lasers, the asymmetry of the output laser, and the impact on the practical application of slab-type solid-state lasers, etc., and achieve the effect of simple structure and low cost
Inactive Publication Date: 2011-03-30
TSINGHUA UNIV
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Problems solved by technology
The asymmetry of the thermal focal length in the two directions causes the asymmetry of the output laser. At the same time, since the dynamic operating points in the two directions must be in the stable region at the same time, the stable region range of the laser operation is reduced, which affects the slab. Practical applications of type solid-state lasers in some aspects
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[0015] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
[0016] In this embodiment, an angle-pumped composite slab laser medium is taken as an example to illustrate the design concept of the present invention. like figure 1 As shown, the device for improving the thermal focal length asymmetry of an asymmetric heat dissipation slab laser includes a slab laser medium 2 and a heat sink 1. The heat sink 1 is divided into upper and lower parts, and is clamped on the slab laser medium 2. Two large sides. In this embodiment, the center of the slab-shaped laser medium 2 is the doped region 3, which is the heat source that absorbs the pump light and generates heat. The position, width, and depth of the air insulation grooves are dete...
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The invention discloses a device for improving asymmetric thermal focal distances of an asymmetric heating panel strip-shaped laser, which comprises a laser medium and a heat sink. The laser medium has a strip shape; the heat sink is divided into an upper part and a lower part which are clamped on an upper face and a lower face of the laser medium; the heat sink is provided with a groove device along the length direction of contacting the laser medium, so heat is intensively led out from a corner part on which the laser medium is connected with the heat sink; and proper parameters, such as the position, width, depth and the like of the groove device can be obtained by analog computation through numerical analysis software, so that temperature gradients of the laser medium are approximately distributed symmetrically, and the laser medium has two symmetrical thermal focal distances in two directions. The device has the advantages of simple structure, easy implementation and capability of solving the problem of the asymmetric thermal focal distances of the asymmetric heating panel strip-shaped laser in the two directions.
Description
technical field [0001] The invention belongs to the technical field of lasers, and in particular relates to a method for improving the thermal focal length asymmetry of an asymmetric heat dissipation slab type laser. Background technique [0002] Since its introduction in 1960, the laser has quickly become the main driving force for social development and progress. Solid-state lasers are the most widely used type of lasers, and have been widely used in various fields of national economy such as scientific research, production and processing, national defense and military, and medical biology. [0003] For solid-state lasers pumped by diodes or lamps, most of the input energy is converted into heat and dissipated, and only a small part can be converted into laser output. Therefore, in solid-state lasers, the thermal effect of the laser medium severely restricts the output performance and reliability of the laser. [0004] Therefore, in the design of solid-state lasers, it i...
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IPC IPC(8): H01S3/042H01S3/06
Inventor 巩马理高松刘欢柳强闫平张海涛黄磊
Owner TSINGHUA UNIV