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A laser drive circuit

A driving circuit and laser technology, applied in the direction of excitation method/device, etc., can solve the problems of inability to achieve peak power, doubling, etc., and achieve the effect of maintaining current, reducing rise time, and reducing current ripple

Active Publication Date: 2016-06-15
MAXPHOTONICS CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Ordinary drivers and lasers have the same peak power in continuous mode and modulation mode, and cannot double the peak power, so peak processing cannot be used to meet special processing technology

Method used

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  • A laser drive circuit
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Embodiment Construction

[0057] In order to make the above objects, features and advantages of the present application more obvious and comprehensible, the present application will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0058] Laser processing methods are divided into continuous cutting and pulse cutting,

[0059] Continuous cutting refers to the method of laser emitting light for a long time for processing. The frequency of laser emitting light is very low, generally below 50HZ. Generally, continuous cutting is used when cutting long-distance straight lines, which can ensure the consistency of power and running speed, and ensure the cutting quality.

[0060] Pulse cutting refers to the method in which the laser emits light at a high frequency for processing. Generally, the light output frequency is above KHZ. Pulse cutting enables high-quality cutting and processing with high dimensional accuracy by minimizing the hea...

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Abstract

An embodiment of the present application provides a laser drive circuit, including: the signal processing module, used to connect to a signal source; the signal comparison module, connected to the signal processing module; the signal conversion module, connected to the The signal comparison module is connected; the power filter module is used to connect with the power supply and the load, and outputs a driving current signal to the load; the current drive module is connected to the signal conversion module and the power filter module; the current sampling The module is connected with the current driving module; the feedback module is connected with the current sampling module and the signal comparison module. The laser driving circuit of the embodiment of the present application can receive a pulse signal and a constant current signal. When the input voltage signal is a pulse signal, it can reduce the rise time of the maximum current and generate an overcurrent pulse for the pulse signal; when the input voltage signal is a constant current When the signal is used, the current ripple can be reduced and the current can be kept stable.

Description

technical field [0001] The present application relates to the technical field of laser driving, in particular to a laser driving circuit. Background technique [0002] Fiber lasers are more and more widely used in industrial applications. In laser processing, lasers are required to achieve fast processing and also meet special processing requirements. For example, in various metal drilling and corner cutting processes, it is required No burrs, the size of the hole is consistent with the size of the slit, and the corner precision is high. [0003] For the laser, the higher the initial peak power when drilling, the faster the optical power rises from zero to the maximum, and the better the marking effect. Therefore, the faster the rise time of the driving current input to the laser pump source is required, the better. [0004] Ordinary drivers and lasers have the same peak power in continuous mode and modulation mode, and cannot double the peak power, so peak processing canno...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S3/09
Inventor 杨德权居剑蒋峰
Owner MAXPHOTONICS CORP