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Power supply device of semiconductor laser and constant-current source

A power supply device and laser technology, which is applied in the direction of semiconductor lasers, lasers, laser components, etc., can solve the problems of laser chip damage, unstable current output, prone to ripple and overshoot, etc.

Pending Publication Date: 2018-11-20
SHENZHEN RAYBOW OPTOELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The current output is not stable enough, prone to ripple and overshoot, which will cause great damage to the laser chip
[0007] Laser power supplies on the market are rarely able to switch freely between high-power pulse and constant current sources; in laser testing, aging and application, different current supplies need to be selected according to different needs

Method used

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  • Power supply device of semiconductor laser and constant-current source
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  • Power supply device of semiconductor laser and constant-current source

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Embodiment Construction

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0021] refer to figure 1 , figure 1 It is a schematic structural diagram of an embodiment of a semiconductor laser power supply device provided in this application. The semiconductor laser power supply device at least includes: an acquisition card 11 , a first power source 12 , a second power source 13 and a third power source 14 .

[0022] Acquisition card 11 is used for generating input signal, and acquisition card 11 mainly is to capture the analog signals...

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Abstract

The invention discloses a power supply device of a semiconductor laser and a constant-current source. The power supply device at least comprises an acquisition card, a first power supply, a second power supply and a third power supply, wherein the acquisition card is used for generating an input signal, the first power supply is connected with the acquisition card and the semiconductor laser, thesecond power supply is used for providing a working voltage for the first power supply, the third power supply is used for providing a working voltage for the semiconductor laser, the first power supply comprises an operational amplifier, a negative feedback circuit, a transistor, a diode and a first resistor, a first input end of the operational amplifier is connected with the acquisition card, asecond input end of the operational amplifier is connected with an output end of the operational amplifier, a first end of the transistor is connected with an output end of the operational amplifier,a second end of the transistor is connected with the semiconductor laser, and a third end of the transistor is connected with ground by the first resistor. By the mode, large-power, rapid-response and stable current input can be achieved, and the test efficiency of a semiconductor laser chip is improved.

Description

technical field [0001] This application relates to the technical field of semiconductor lasers, and specifically designs a power supply device and a constant current source for semiconductor lasers. Background technique [0002] At present, the development of semiconductor lasers in the world is in a period of rapid development, while my country's laser science and technology basically maintains the attitude of synchronous development with the world. Due to the characteristics of high conversion efficiency, long life, small size, light weight, high reliability, direct modulation and easy integration with other semiconductor devices, semiconductor lasers are widely used in military affairs, industrial processing, laser medical treatment, optical communications, optical storage and Laser printing and other information fields have a very wide range of applications. [0003] Semiconductor lasers are different from other optically pumped lasers. Its population inversion is forme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S5/042
CPCH01S5/042
Inventor 胡海程珠敏刘文斌
Owner SHENZHEN RAYBOW OPTOELECTRONICS
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