Secondary refrigerant and preparation method thereof, cooling structure, semiconductor laser bar and heat sink system

Abstract

The invention discloses a secondary refrigerant and a preparation method thereof, a cooling structure, a semiconductor laser bar and a heat sink system. The secondary refrigerant for operating the semiconductor laser bar at low temperature comprises the following components in parts by volume: 100 parts of fluoride; and 1-50 parts of alcohol. The secondary refrigerant has the characteristics of no corrosion, low toxicity, safety, stability, excellent thermal conductivity, wide liquid temperature range and the like, is suitable for a semiconductor laser bar micro-channel heat sink cooling structure running at low temperature, effectively adjusts the working temperature of a semiconductor laser bar, and improves the electro-optical efficiency of the semiconductor laser bar. According to the secondary refrigerant, the freezing point of impurity water in the secondary refrigerant can be reduced to be lower than the working temperature, and ice particles are prevented from being generated to block a heat sink microchannel. The secondary refrigerant has certain conductivity, can prevent accumulation of static charges in the working process, and avoids the problem of static sparking.

Description

technical field

[0001] The invention belongs to the technical field of semiconductor lasers, and in particular relates to a coolant, a preparation method, a cooling structure, a semiconductor laser bar, and a heat sink system. Background technique

[0002] Semiconductor lasers have the advantages of high efficiency, narrow linewidth compared with light-emitting diodes, and all-electric drive, and have a wide range of application prospects, especially in the field of all-solid-state lasers. The pump absorption wavelength of the crystal is an ideal solid-state laser pump source. Due to the low output power of a single semiconductor laser, semiconductor lasers are generally packaged into a one-dimensional array, called a semiconductor laser bar, and can be combined into a two-dimensional array, called a semiconductor laser array. During the use of the semiconductor laser bar, part of the power that cannot be converted into laser output will become waste heat, causing the tempe...

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