Driving power supply of semiconductor laser

Abstract

The invention discloses a driving power supply of a semiconductor laser. The driving power supply comprises a switch power module, n constant-current module array and a water-cooling module, wherein each constant-current module array comprises m constant-current source modules, a positive output end of the switch power module is connected with input ends of n LD arrays, a negative output end of the switch power module is connected with input ends of the constant-current source module array, output ends of the constant-current source module array are connected with output ends of the corresponding LD arrays, the switch power module and the constant-current source modules are arranged on the water-cooling module, the switch power module is used for converting an alternating current to a direct current conforming to an output power and providing a stable working voltage for a driving power circuit, the constant-current source modules are used for enabling the whole driving power circuit to output constant current during stable working, and the water-cooling module is used for cooling the integral driving power circuit. The driving power supply has the advantages of small size, stableoutput, small error, good practicability and universality and a better application prospect and is simple to apply.

Description

technical field [0001] The invention belongs to the field of semiconductor lasers, in particular to a driving power supply for semiconductor lasers. Background technique [0002] Due to its small size and high efficiency, semiconductor lasers have become the most widely used lasers in today's industrial production, including laser optical fiber communication, laser space long-distance communication, industrial shipbuilding, automobile manufacturing, laser engraving, laser marking, laser cutting, Printing rolls, metal and non-metal drilling / cutting / welding (brazing, quenching, cladding and deep welding), military defense security, medical equipment, large-scale infrastructure and other fields, the continuous laser power can reach 100 watts , kilowatts or even 10,000 watts, semiconductor lasers have become another research hotspot in the field of optical communications. As one of the important components of the semiconductor laser, the laser power supply mainly provides elect...

AI Technical Summary

Problems solved by technology

However, due to factors such as errors in the production process, there will inevitably be differences in the characteristics of components and components, so how to ensure the constant current operation of the entire laser system has become a difficult point in the design of semiconductor laser drive power.

Chinese patent CN201020679171.9 proposes a high-current semiconductor laser drive power supply, but the drive power supply does not have good real-time performance, low adjustment accuracy, large output current error and difficult to guarantee stability

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