Thermal management device and method for high-power laser based on spray vaporization

Abstract

The invention discloses a device and method for high-power laser heat management based on spray evaporation. The device for the high-power laser heat management comprises a high-pressure spray chamber arranged on a laser heat sink, a spray nozzle array and an air pressure sensor are arranged in the high-pressure spray chamber, the high-pressure spray chamber is adjacent to a transitional chamber, the transitional chamber is connected with a high-pressure liquid storage tank through a high-pressure electric pump, a spray liquid returning and accumulating area on the bottom portion of the high-pressure spray chamber is connected with the transitional chamber through the high-pressure electric pump, the high-pressure spray chamber is further connected with an exhaust pipe, and a decompression valve is arranged on the exhaust pipe. The method for the high-power laser heat management is achieved through the device for the high-power laser heat management, and the method is used for maintaining the pressure of gas refrigerants in the high-pressure spray chamber to be constant, and therefore temperature is maintained to be constant to achieve constant temperature control over the laser heat sink. The device is simple and reliable in structure, high in compactness, accurate in temperature control and stable in operation, and the method is simple and easy to implement, high in efficiency and environmentally friendly.

Description

technical field [0001] The invention belongs to the field of thermal management of lasers, and relates to thermal management technology of compact high-power solid-state lasers, in particular to a thermal management device and method for high-power lasers based on spray vaporization. Background technique [0002] In recent years, as the research results of diode lasers (LDs) have gradually turned into practical applications and commercial mass production, the reliability and cost performance of diode lasers have been greatly improved. Because diode lasers have many advantages that are conducive to system integration, such as compact structure, high electrical efficiency, and modularization, diode lasers have become the preferred choice for various high-energy laser systems such as fiber lasers, optically pumped solid-state lasers, and diode-pumped alkali metal vapor lasers. Preferred pump source. [0003] At present, although the electrical-to-optical conversion efficiency ...

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Problems solved by technology

However, when the heat flux is relatively high, such as the heat flux exceeds 20W / cm 2 , and have high temperature uniformity (within 1°C), liquid cooling (such as water cooling) technology has no advantage, when the heat flux exceeds 25W / cm 2 , and when the mobility requirements of the system are high, liquid cooling does not have advantages in terms of power consumption, weight, etc., and the water cooling system has become insufficient

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