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Semiconductor laser pulse driving circuit

A pulse-driven, laser technology, applied in the field of optoelectronics, can solve the problems of device damage, high device heat, and high energy consumption

Active Publication Date: 2017-06-20
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Its output mode is mainly determined by the LD drive circuit. In the LD pulse drive circuit in the prior art, in order to obtain the output of the pulse mode, the general circuit structure is complicated, and the energy consumption of the whole circuit is relatively high, and the energy consumption is high. The problem is that the device generates a lot of heat. When the heat cannot be dissipated in time, it will often cause damage to the device. Therefore, the reliability of the general pulse drive circuit is not high enough.

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  • Semiconductor laser pulse driving circuit

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Embodiment Construction

[0011] The semiconductor laser pulse driving circuit of the present invention will be described in detail below in conjunction with the accompanying drawings. The driving circuit includes a pulse source pulse, a power supply VCC, a first diode D1, a second diode D2, a third diode D3, a first resistor R1, a second resistor R2, a third resistor R3, and a fourth resistor R4, the first capacitor C1, the second capacitor C2, the third capacitor C3, the first transistor THY1, the second transistor THY2, and the semiconductor laser LD. The first transistor THY1 is a PNP transistor, and the second transistor THY2 is an NPN transistor.

[0012] The connection relationship of each component is as follows: the positive pole of the power supply VCC is connected to the emitter of the first triode THY1, and the negative pole of the power supply VCC is respectively connected to one end of the second capacitor C2, one end of the fourth resistor R4 and the ground end. The other end of the sec...

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Abstract

A semiconductor laser pulse driving circuit comprises a pulse source (pulse), a power source (VCC), a first diode (D1), a second diode (D2), a third diode (D3), a first resistor (R1), a second resistor (R2), a third resistor (R3), a fourth resistor (R4), a first capacitor (C1), a second capacitor (C2), a third capacitor (C3), a first triode (THY1), a second triode (THY2), and a semiconductor laser (LD).

Description

technical field [0001] The invention relates to a semiconductor laser pulse drive circuit, which belongs to the field of optoelectronic technology. Background technique [0002] Semiconductor lasers are among the well-known types of lasers. Generally, commercially mature semiconductor lasers have two output modes, one is continuous output and the other is pulse output. Its output mode is mainly determined by the LD drive circuit. In the LD pulse drive circuit in the prior art, in order to obtain the output of the pulse mode, the general circuit structure is complicated, and the energy consumption of the whole circuit is relatively high, and the energy consumption is high. The problem is that the device generates a lot of heat. When the heat cannot be dissipated in time, it will often cause damage to the device. Therefore, the reliability of the general pulse drive circuit is not high enough. This is a major problem faced by semiconductor laser pulse drive circuits in the p...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S5/042
CPCH01S5/0428
Inventor 李松涛张贵银
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)