Driving power supply of semiconductor laser

A technology for driving power supply and laser, which is applied to semiconductor lasers, lasers, laser parts, etc., can solve the problems of lack of real-time performance of driving power supply, differences in the characteristics of components and components, large output current error, etc., and achieve good real-time performance and stability. stability, reducing output error and output stability

Inactive Publication Date: 2018-11-23
NANJING UNIV OF SCI & TECH
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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 semi

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  • Driving power supply of semiconductor laser
  • Driving power supply of semiconductor laser
  • Driving power supply of semiconductor laser

Examples

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Example Embodiment

[0035] Example

[0036] In the embodiment of the present invention, a certain brand of pump source, namely LD, is used. The rated voltage of the pump is 15V and the rated current is 13A, and 3 sets are used in series. Choose a switching power supply with a rated output voltage of 48V and a maximum output current of 15A according to load requirements. The constant current source module circuit built is as follows Figure 4 As shown, the constant current source module includes a first resistor R1, a second resistor R2, a third resistor RZ1, a fourth resistor RZ2, a fifth resistor RZ3, a sixth resistor RZ4, a seventh resistor RZ5, an eighth resistor RT1, and a ninth resistor. Resistor R3, tenth resistor R4, eleventh resistor R5, twelfth resistor R6, thirteenth resistor R7, first sliding rheostat RP1, first capacitor CZ1, second capacitor CZ2, first operational amplifier LM258 chip U1, The second operational amplifier LM258 chip U2, the first NPN transistor QZ1, the first N-channel ...

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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...

Claims

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Application Information

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IPC IPC(8): H01S5/042
CPCH01S5/042
Inventor 刘明单崇铭任大良魏京天
Owner NANJING UNIV OF SCI & TECH
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