We all know that high-power laser diodes are very harmful, so do you know what to pay attention to when applying them? The following small series will give you a brief introduction.

The heat of high-power laser diode is concentrated and large, and the result that it can't be dissipated is that the temperature rises, the optical power drops, the wavelength drifts, and finally the chip burns directly. Secondly, the high-power laser diode is particularly sensitive to the driving current. Unlike ordinary lamp beads, it can bear it, even if the current is more than tens of milliamps, problems may occur. The driving circuit should use a constant current source, not a power supply with big fluctuations. Electrostatic protection, this thing can't be seen or touched, but it is extremely lethal. The PN junction of laser diode chip is very sensitive. When static electricity is discharged, the chip may be disconnected or its performance will be degraded. Environment and package protection, high-power laser diode is afraid of moisture, dust and vibration. If many modules are not well sealed, the water vapor in the air will enter, and the lens will fog after a long time, and the reflected light will easily burn. In fact, the use of high-power laser diodes is not complicated. As long as we master several principles, such as stable current, good heat dissipation, anti-static, accurate optical path and stable environment, there will be no major problems.