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Driving device, transmitting system and driving method of nanosecond narrow pulse laser

A technology of laser emission system and driving device, applied in lasers, phonon exciters, laser parts, etc., can solve the problems of low cost performance, high performance requirements of gate drivers, and high cost.

Active Publication Date: 2020-02-11
VISIONICS MICROELECTRONICS TECH CO LTD
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Problems solved by technology

In the traditional nanosecond narrow pulse laser drive circuit, the performance requirements of the gate driver are very high, which determines the high cost and low cost performance of the traditional nanosecond optical pulse emission scheme.

Method used

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  • Driving device, transmitting system and driving method of nanosecond narrow pulse laser

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Embodiment Construction

[0015] The present invention will be described in detail in some embodiments as follows. However, except for the disclosed embodiments, the scope of the present invention is not limited by these embodiments, and the scope of the subsequent patent applications shall prevail. In order to provide a clearer description and enable ordinary people in the art to understand the content of the invention, the various parts in the illustrations are not drawn according to their relative sizes, and the proportions of certain dimensions or other relative dimensions may be highlighted It appears exaggerated, and irrelevant details are not fully drawn in order to simplify the diagram.

[0016] Such as figure 1 as shown in figure 1 It is a schematic diagram of a nanosecond narrow pulse laser emitting system according to an embodiment of the present invention. The nanosecond narrow pulse laser emission system includes an input signal unit 01 , a gate drive unit 02 , a full bridge circuit 03 ...

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Abstract

The invention provides a driving device, a transmitting system and a driving method of a nanosecond narrow pulse laser. The nanosecond narrow pulse laser driving device comprises a gate driving unit and a full-bridge circuit. The gate driving unit is used for amplifying a signal input into the gate driving unit and the signal is amplified enough to drive an MOSFET in a post-stage full-bridge circuit. The full-bridge circuit is composed of a PMOSFET and an NMOSFET and is used for amplifying an output signal of the gate driving unit again to generate a laser driving signal. The laser driving signal is enough to drive a laser diode. In the invention, common devices such as a common gate driver and a full-bridge circuit which are low in cost and poor in performance can be used for replacing aspecial gate driver and power device combination which is high in performance and high in price, and advantages of low cost and high cost performance are achieved.

Description

technical field [0001] The present invention relates to the technical field of laser drive, in particular to a drive device, emission system and drive method for nanosecond narrow pulse laser. Background technique [0002] Laser is another major invention of mankind since the 20th century after nuclear energy, computers, and semiconductors. It is called "the fastest knife", "the most accurate ruler", and "the brightest light". Nanosecond laser is a kind of laser, which is characterized in that the output light is pulsed light, and the duration of the light pulse is at the nanosecond level. Nanosecond laser technology has been widely used in military, manufacturing, medical, automotive and other fields. Nanosecond laser can be used in laser radar, laser guidance, laser ranging, laser marking, laser scalpel and laser beauty and other occasions. [0003] The design of the traditional nanosecond narrow pulse laser drive circuit requires the use of a dedicated, high-performance,...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S5/042
CPCH01S5/042
Inventor 曹晓康李成俞坤治黄晓林
Owner VISIONICS MICROELECTRONICS TECH CO LTD
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