Novel low-cost single bar liquid refrigeration laser and manufacturing method thereof

Abstract

The invention discloses a novel low-cost single bar liquid refrigeration laser and a manufacturing method thereof. The laser comprises an upper liquid refrigeration block, a connecting strip, an insulating strip, an anode connecting strip, a connecting strip fixing strip, a lower liquid refrigeration block and a micro-anode block. The lower liquid refrigeration block, the micro-anode block, the insulating strip, a cathode connecting strip and the upper liquid refrigeration block are stacked up and connected with each other sequentially from the bottom up; the lower liquid refrigeration block,the micro-anode block, the insulating strip and the cathode connecting strip are respectively and correspondingly provided with liquid feeding through holes and liquid discharging through holes; the upper liquid refrigeration block is provided with a liquid feeding hole and a liquid discharging hole communicated through a connection hole, the liquid feeding through holes are sequentially stacked up to form a liquid feeding passage, and the liquid discharging through holes are sequentially stacked up to form a liquid discharging passage. The laser has advantages of simple manufacturing method,low production cost, low flow resistance and less pressure drop of cooling medium, easy sealing, strong heat emission capability, long service life and high reliability, and the laser can meet high power output heat emission requirements of laser light completely.

Description

technical field [0001] The invention belongs to the field of laser manufacturing, and relates to a semiconductor laser, in particular to a novel low-cost single-bar liquid cooling laser and a preparation method thereof. Background technique [0002] With the further development of high-power semiconductor lasers, the main problems are still low conversion efficiency, reliability, poor performance stability and high cost, etc. These problems seriously restrict its application space. The performance of the laser is not only related to the chip, but also related to the heat dissipation and packaging of the laser. In order to improve the reliability and performance stability of lasers and reduce production costs, it is necessary to design semiconductor lasers with high-reliability packaging structures and efficient heat dissipation structures. [0003] At present, high-power single-array semiconductor lasers have thermal conduction cooling (Michael Leers, Konstantin Boucke, Man...

AI Technical Summary

Problems solved by technology

And the low conductivity of deionized water must be maintained during use, so the use and maintenance costs are high

[0007] 2. Difficult to process

Therefore, the precise machining of microchannel refrigerators is a difficult point

[0008] 3. High manufacturing cost

Since the precision machining of micro-channel refrigerators is quite difficult, its manufacturing cost is also very high

[0009] 4. Short service life

On the one hand, these impurity particles may block the liquid channel of the micro-channel cooler, reducing its cooling effect, resulting in serious heat concentration, resulting in drift of the output wavelength of the laser, broadening of the spectrum, and shortening of performance reliability and life. even burn out the laser

On the other hand, these impurity particles will cause electrochemical corrosion of the tube wall of the microchannel, and in severe cases, the tube wall of the microchannel refrigerator may be corroded, which will greatly affect the safety of the laser

These all seriously affect the service life of the laser

[0010] 5. High sealing requirements

Because the flow space of the cooling medium in the micro-channel refrigerator is very narrow, it is easy to generate redundant pressure drop, the flow resistance of the cooling medium is very large, and the sealing is difficult

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