Pulse driving power supply for LD laser

A pulse drive and laser technology, applied in lasers, laser parts, semiconductor lasers, etc., can solve the problems of low stability, large current overshoot, slow current rising edge, etc., to improve the rising speed, improve service life, fast The effect of the rising edge of the current

Active Publication Date: 2021-12-24
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for semiconductor lasers with high power, long pulse width, and high repetition frequency, there are few power supply products that can be adapted, and such power supply products still have problems such as low stability, slow current rising edge, and large current overshoot.

Method used

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  • Pulse driving power supply for LD laser
  • Pulse driving power supply for LD laser
  • Pulse driving power supply for LD laser

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Embodiment Construction

[0055] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0056] Depend on figure 1 As shown, a kind of pulse driving power supply for LD laser of the present invention comprises: pulse generation circuit 1, gate voltage control circuit 2, microcontroller 3;

[0057] Depend on figure 2 As shown, the pulse generating circuit 1 includes: a relay 11, an energy storage capacitor network 12, a field effect transistor 13, and a sampling resistor 14;

[0058] The input end of described relay 11 is connected with power su...

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Abstract

The invention discloses a pulse driving power supply for an LD laser. The total resistance value in an RC charging loop is changed and the time constant of the RC charging loop is adjusted through the reasonable control of the conduction state of each charging triode, thereby changing the rising speed of the grid voltage of a field effect transistor. By reasonably controlling the conduction state and the conduction time of each triode, the voltage at the two ends of the capacitor C1 can be accurately controlled, so that the output voltage of the grid voltage control circuit is accurately controlled, and the grid voltage of the field effect is accurately controlled. According to the invention, the current can be stably output, the current rising edge is fast, the current overshoot phenomenon can be avoided, the current overshoot phenomenon is reduced and even eliminated, the load LD laser is effectively protected, and the service life of the load LD laser is prolonged.

Description

technical field [0001] The invention relates to the technical field of a pulse driving power supply, in particular to a pulse driving power supply for an LD laser. Background technique [0002] With the increasing progress of semiconductor technology, semiconductor lasers, namely LD lasers, are widely used in optoelectronics, medical treatment, military industry, aerospace and other fields due to their advantages of small size, high efficiency, and long life. In actual use, the stability of the current provided by the pulse drive power supply will directly affect the performance and service life of the semiconductor laser. At present, the pulse driving power supply of semiconductor lasers is mainly provided by foreign companies including ILXLightwave, FEDAL, and IXYS. However, for semiconductor lasers with high power, long pulse width, and high repetition frequency, there are few power supply products that can be adapted, and such power supply products still have problems s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M9/00H02M9/06H02M9/04H01S5/042H03K3/57
CPCH02M11/00H01S5/042H03K3/57H02M1/32Y02B70/10
Inventor 梁勖徐一帆施阳杰林颖
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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