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Semiconductor laser driving source with temperature compensation

A technology of laser driving and temperature compensation, which is applied in the direction of semiconductor lasers, lasers, laser components, etc., can solve problems such as not having temperature compensation functions, and achieve fast switching speed, reduced turn-off overshoot, and low shell inductance Effect

Inactive Publication Date: 2014-12-10
SHANGHAI RADIO EQUIP RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the circuit needs to provide a narrow pulse signal externally, and does not have the function of temperature compensation

Method used

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  • Semiconductor laser driving source with temperature compensation
  • Semiconductor laser driving source with temperature compensation
  • Semiconductor laser driving source with temperature compensation

Examples

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Embodiment Construction

[0050] The present invention will be further elaborated below by describing a preferred specific embodiment in detail in conjunction with the accompanying drawings.

[0051] Such as figure 1 and figure 2 As shown, a semiconductor laser drive source with temperature compensation includes: a pulse width conversion circuit 1, a drive amplifier circuit 2, a power switch circuit 3, and a laser circuit 4 connected sequentially; 3 between the active pull-down circuit 5; a filter tank circuit 6, connected to the power switch circuit 3; wherein, the active pull-down circuit 5 includes a first resistor 51, a second resistor 52, a first triode 53 One end of the first resistor 51 is connected to the base of the first triode 53, and the other end is respectively connected to one end of the second resistor 52, the drive amplifier circuit 2, and the power switch circuit 3; the second resistor 52 The other end of the first triode 53 is connected to the collector; the emitter of the first t...

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PUM

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Abstract

The invention discloses a semiconductor laser driving source with temperature compensation, and the semiconductor laser comprises a pulse width conversion circuit, a driving amplification circuit, a power switch circuit and a laser circuit, all which are in turn connected; the semiconductor laser further comprises an active pull-down circuit arranged between the driving amplification circuit and the power switch circuit and a filter energy storage circuit connected with the power switch circuit; the active pull-down circuit comprises a first resistor, a second resistor, and a first transistor; one end of the first resistor is connected with the base electrode of the first transistor while the other end thereof is respectively connected with one end of the second resistor, the driving amplification circuit and the power switch circuit; the other end of the second resistor is connected with the collector of the first transistor; the emitter of the first transistor is grounded. The semiconductor laser driving source can provide narrow pulse driving signals and restrain large-current signals to generate noise d(i)i( / i) / d(i)t( / i) generated during instantaneous connection and disconnection, and the driving circuit apparatus and the laser will realize parameter shift under high and low temperature conditions, for temperature compensation.

Description

technical field [0001] The invention relates to the field of narrow pulse and high-power semiconductor laser drive for laser fuze, in particular to a semiconductor laser drive source with temperature compensation. Background technique [0002] In order to improve the working distance, anti-interference performance and ultra-low altitude performance of the laser fuze, and meet the requirements of miniaturization and all-weather work, the laser drive source must achieve narrow pulse width and high peak power under the overall requirements of miniaturization and low power consumption. At the same time, the circuit must have a temperature compensation function to realize the compensation of the characteristic parameter drift of the circuit device and the laser itself under high and low temperature conditions. [0003] The laser is a current-driven device. In order to make the laser output narrow pulse and high power laser, the driver needs to provide a corresponding narrow pulse...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S5/042
Inventor 徐雅燕程妹华夏红娟
Owner SHANGHAI RADIO EQUIP RES INST
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