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Semiconductor laser current source based on complementary Wilson current mirror

A technology of current mirror and laser, which is applied in the field of current source, can solve the problems of limited application, inability to meet at the same time, low working efficiency of linear power supply, etc., and achieve the effect of small size

Inactive Publication Date: 2021-04-13
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The traditional linear power supply has very low working efficiency, and requires a bulky cooling device to ensure its stable and normal operation, which limits its application in some specific occasions
In addition, most current sources cannot meet the requirements of the two working modes (cathode grounding and anode grounding) of semiconductor lasers at the same time

Method used

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  • Semiconductor laser current source based on complementary Wilson current mirror
  • Semiconductor laser current source based on complementary Wilson current mirror
  • Semiconductor laser current source based on complementary Wilson current mirror

Examples

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Embodiment Construction

[0024] Below with the accompanying drawings ( Figure 1-Figure 6 ) to illustrate the present invention.

[0025] figure 1 It is a structural schematic diagram of a semiconductor laser current source based on a complementary Wilson current mirror for implementing the present invention.

[0026] figure 2 yes figure 1 Schematic diagram of the complementary Wilson current mirror circuit in . image 3 yes figure 1 The schematic diagram of the power circuit structure in.

[0027] Figure 4 yes figure 1 A schematic structural diagram of a voltage reference circuit that outputs a positive reference voltage Vset+ of 0 to +7V. Figure 5 yes figure 1 A schematic structural diagram of a voltage reference circuit that outputs a negative reference voltage Vset- of -7V to 0. Figure 6 yes figure 1 Schematic diagram of the protection filter circuit structure in. refer to Figure 1 to Figure 6 As shown, a semiconductor laser current source based on a complementary Wilson current ...

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Abstract

Provided is a semiconductor laser current source based on a complementary Wilson current mirror. Through the combination of a positive and negative bidirectional power supply circuit, a positive and negative bidirectional voltage reference circuit and a complementary Wilson current mirror circuit, positive and negative current bidirectional output of the current source can be realized, and the current source has high stability, so that two working modes of cathode grounding and anode grounding of a semiconductor laser can be satisfied.

Description

technical field [0001] The invention relates to current source technology, in particular to a semiconductor laser current source based on a complementary Wilson current mirror. Background technique [0002] The semiconductor laser current source is mainly used to provide a stable driving signal for the semiconductor laser, maintain the normal working state of the semiconductor laser, and also need to provide certain protection functions. The main research and development directions of semiconductor laser current sources are high stability, high current output, high power density, small size, high-speed working characteristics and high working efficiency. The traditional linear power supply has very low working efficiency, and requires a bulky cooling device to ensure its stable and normal operation, which limits its application in some specific occasions. In addition, most current sources cannot meet the requirements of the two working modes (cathode grounding and anode gro...

Claims

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Application Information

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IPC IPC(8): G05F3/26H01S5/042
CPCG05F3/26H01S5/042
Inventor 房建成孙凡翟跃阳李秀飞全伟
Owner BEIHANG UNIV
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