Power supply drive device for pulse semiconductor laser test equipment

Abstract

The invention discloses a power drive device for pulse semiconductor laser testing equipment, which comprises a drive module and an installing component. The power drive device comprises the main technical contents that the power supply function in the drive module is realized by a battery set, an adjustable DC-DC converter and an energy-storage filtering circuit; the drive function in the drive module is realized by a pulse signal generating circuit and a laser drive circuit with a burr spiking suppression circuit; and electric connection between the detected semiconductor laser and the drivemodule is realized through the conductive installing component by means of mechanical connection. The power drive device can not only provide drive current of between 30 and 100 A, can drive the pulse semiconductor laser with peak value of between 100 and 300 W, but also can well overcome the defects of large volume, large effects of spiking current and burr current, harmful static caused by welding the laser of the prior drive device with a linear power supply in the performance detection of the high-power pulse laser, and has better application prospect.

Description

technical field [0001] The invention belongs to the technical field of semiconductor lasers, and mainly relates to a testing device capable of detecting the performance parameters of pulsed semiconductor lasers, in particular to a power drive device used by the testing device to drive a high-power semiconductor laser to be tested. Background technique [0002] Compared with ordinary semiconductor lasers, pulsed semiconductor lasers have the advantages of small size, high efficiency, and long life. At present, it is widely used in various fields such as laser communication, laser radar, laser guidance, and laser ranging. In recent years, domestic semiconductor laser technology has become more and more mature, and high-power semiconductor lasers with a peak power of more than 100W have appeared in the market, and are widely favored by engineering applications. [0003] Before using a semiconductor laser, it is necessary to test its laser performance parameters to see if it me...

AI Technical Summary

Problems solved by technology

For tens of watts of pulsed semiconductor lasers, since the driving current required by the laser is relatively small, the current spikes and burrs generated by the parasitic inductance in the current general-purpose driving circuit will not affect the performance of the laser.

However, for high-power pulsed semiconductor lasers above 100W, these current spikes and burrs in the drive circuit have a fatal impact on the performance of the laser

[0006] 3. Whether it is a pulsed semiconductor laser of tens of watts or more than 100W, it generally works in a high-frequency environment, and static electricity will cause great damage to it.

In this way, during the welding operation before testing, the static electricity on the electric soldering iron can easily damage the expensive laser, and in the welding process, the static electricity of the human body may also bring adverse consequences to the laser

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