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A laser pulse generating circuit

A technology of laser pulse and generating circuit, which is applied in pulse shaping, electromagnetic wave re-radiation, radio wave measurement system, etc., can solve the problem of high cost and achieve the effect of ensuring measurement accuracy

Active Publication Date: 2016-08-03
NANJING CHERVON IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the cost of existing laser pulse production circuits is generally high, such as using a dedicated laser control semiconductor integrated circuit (IC) or a complex discrete component circuit to achieve

Method used

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Embodiment Construction

[0017] The present invention will be further described in detail below with reference to the embodiments of the accompanying drawings.

[0018] Such as figure 2 The laser pulse generating circuit shown includes a differential circuit 21 , an amplifier circuit 22 , a laser 23 and a power supply device 24 .

[0019] The laser pulse generating circuit of the present invention is connected with an external waveform generator 1, and the waveform generator 1 generates a pulse signal greater than 30%.

[0020] The differential circuit 21 includes a first capacitor C1 and a resistor R, wherein the first end of the first capacitor C1 is connected to the external waveform generator 1, the second end of the first capacitor C1 is connected to the first end of the resistor R, and the resistor R The second end of the capacitor C1 is grounded, and the second end of the first capacitor C1 is the output end of the differential circuit.

[0021] The amplifying circuit 22 is a triode Q, the b...

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Abstract

The invention discloses a laser pulse generating circuit, which includes a differential circuit, an amplifying circuit, a laser and a power supply device for supplying power to the laser. The external waveform generator sends out a pulse signal, and the pulse signal is differentiated and changed by the differential circuit. An electric pulse with a narrow width is formed, and the current of the electric pulse is amplified after passing through the amplifying circuit, and the electric pulse after the electric current amplifies passes through the laser to form a laser pulse signal with a width less than 1.5 nanoseconds, and the width of the laser pulse signal is smaller than the The width of the electrical pulse, by using a differential circuit with a relatively simple structure to differentially transform the pulse waveform to obtain a narrow-width electrical signal, and processing the electrical signal through a laser to obtain a laser pulse signal with a narrower width, thus ensuring the measurement of laser ranging Accuracy.

Description

technical field [0001] The invention relates to a laser pulse generating circuit. Background technique [0002] The distance measurement technology is divided according to the type of carrier, and has experienced the initial ultrasonic distance measurement to the photoelectric distance measurement so far. Among them, the photoelectric distance meter mainly includes infrared light, laser and other light sources as the carrier distance meter, and has been developed rapidly and widely used. The most popular is the laser rangefinder, which is mainly due to the advantages of good collimation, monochromaticity, coherence and very small emission angle of the laser. [0003] At present, laser ranging is mainly divided into two methods: one is the phase laser ranging method. This method modulates the laser with a sine wave signal with a fixed frequency, and uses the laser signal as the carrier to irradiate the measured target. The measured distance is detected by the phase change of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03K5/04G01S7/484G01S17/08
Inventor 胡云峰
Owner NANJING CHERVON IND