Compact water-cooled diaphragm

Abstract

The invention discloses a compact water-cooled diaphragm, belonging to the technical field of lasers. The compact water-cooled diaphragm can achieve the integration of a waterway and an aperture stop,and the waterway adopts an integrated U-shaped waterway with an empty space in the middle portion, the volume is greatly reduced, and therefore, the compact water-cooled diaphragm is specially suitable for occasions with short-coup coupling. The back surface of the compact water-cooled diaphragm is provided with a cooling groove to effectively increase the heat dissipation efficiency of the compact water-cooled diaphragm, so that the compact water-cooled diaphragm is specially suitable for occasions with high-power amplification, the design of the partitioning the overflow ring of the water inlet and the water outlet of the waterway can make the water inlet and the water outlet form a multi-layer sealing partition with the outer wall of the pipe joint, thereby achieving the effect of multi-layer sealing, and under the squeeze of the pipe joint, the micro-variable outer arc protrusion can be deformed while being hardened, and the contact area with the surface of the pipe joint is increased, thereby further improving the sealing effect, and effectively avoiding the influence on the normal use of the laser due to water overflow.

Description

technical field [0001] The invention relates to the technical field of lasers, in particular to a compact water-cooled diaphragm. Background technique [0002] A diaphragm is an entity that limits a beam of light in an optical system. It can be the edge of a lens, a frame or a specially designed perforated screen. Its role can be divided into two aspects, limiting the beam or limiting the field of view (imaging range) size. The diaphragm that restricts the most beams in the optical system is called the aperture diaphragm, and the diaphragm that restricts the field of view (size) the most is called the field diaphragm. It can be seen from the above that both the aperture diaphragm and the field diaphragm are real objects. The general rule for determining the aperture stop of an optical system is: the aperture stop of the optical system is determined by the one with the smallest opening angle when looking at the stop or the image of the stop from the object point. If the i...

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Problems solved by technology

[0004] The laser amplification system mainly consists of a signal light collimation coupling system, a gain medium, and a pump coupling system, and the structural performance of the signal light coupled to the gain medium has a great influence on the final output power stability and pointing stability of the laser. It is mainly reflected in the fact that the pump light overflowing from the gain medium will hit the signal light coupling lens, which will continuously heat the lens and cause the signal light to deviate from the optimal coupling position

The method of filtering pump light based on a dichroic mirror is to separate the pump light from the signal light through a coated lens, but the dichroic mirror must be inserted into the optical path at an angle of 45°, which requires a large space distance for the system, and the thickness of the dichroic mirror will cause signal The light is deflected before entering the laser gain medium; therefore, it is a new measure to save space and not interfere with the optical path by inserting the heat-absorbing diaphragm vertically into the optical path. In the high-power coupling system, more powerful heat dissipation must be used. The heat generated by the pump light can be taken away by means of the pump light. In addition, the structural size of the diaphragm will also directly affect the selection of the parameters of the signal coupling focusing lens, and the usual diaphragm can only play the role of blocking light, and cannot take away heat, or The above functions are realized through the assembly of multiple dispersed devices, and the structure size is large, which is incompetent in some occasions where short-focus lens coupling is used

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