A heat capacity cooled liquid laser

Abstract

The invention discloses a thermal-capacitive cooling liquid laser which comprises pumping sources, a first resonant cavity mirror, a second resonant cavity mirror, a liquid tube, phase-transition material layers, cooling channels, a liquid pump, a first channel pipe and a second channel pipe, wherein pump light emitted by the pumping sources can irradiate the liquid gain tube; the first resonant cavity mirror and the second resonant cavity mirror are arranged at the two sides of the liquid gain tube respectively; the liquid gain tube respectively is communicated with one end of the first channel pipe and one end of the second channel pipe; the other end of the first channel pipe is communicated with one end of each cooling channel, the other end of the second channel pipe is communicated with the other end of each cooling channel; the liquid pump is arranged in the first or second channel pipe; the phase-transition material layers are arranged outside the cooling channels; and the liquid gain tube, the cooling channels and the first and second channel pipes are internally provided with a liquid gain material. Thus, the working temperature of the liquid laser is kept constant basically within short time, and normal work of the liquid laser is maintained.

Description

technical field [0001] The invention belongs to the field of lasers, in particular to a heat capacity cooling liquid laser. Background technique [0002] Compared with solid-state lasers, during the operation of liquid lasers, the gain medium has almost no thermal stress, and the beam quality will not be degraded due to the change in the refractive index of the gain medium caused by thermal stress. It is easier to maintain good beam quality at high power than solid-state lasers . [0003] However, while the output power of the liquid laser is greatly increased, the heat generated by the gain material and the pump source is also greatly increased. For laser design, the pump source can be arranged in a dispersed manner to reduce heat density, and the gain material can flow out of the pump area. After flowing out of the pump area, it is still necessary to cool the liquid gain material that has generated heat. At present, there are mainly air cooling and water cooling methods ...

AI Technical Summary

Problems solved by technology

In recent years, with the development of fiber lasers, researchers have applied phase change heat storage technology to the temperature control of fiber lasers for short-term operation according to the heat dissipation characteristics of fiber lasers. However, the heat generated by fiber lasers is from the heat source to the phase change material It is a process of successive conduction. The working substance of the laser keeps heating continuously. Under the action of the liquid circulation, the liquid working substance of the liquid laser circulates the heat-generating liquid to the phase change material for cooling, realizing the spatial separation of the heat-generating part and the cooling part. , this kind of operation mode of liquid laser has not been reported yet

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