What Should I Do If The Frequency Of The Laser Pump Light Source Of The Laser Marking Machine Is Unstable?

Laser marking machine is a high-precision equipment widely used in industrial manufacturing. Its core component is a laser, and the light source of the laser is a mode-locked diode laser (LD) or a semiconductor laser (DPSS). Both LD and DPSS light sources use laser pumping technology, and frequency instability is a very common problem. So, how to deal with the unstable frequency of the laser pump light source of the laser marking machine? Let's take a look at it in detail.

First of all, we need to understand the reason why the frequency of the laser pump light source is unstable. Generally speaking, the frequency instability of the laser pump light source may be caused by the following reasons:

1. The temperature instability of the laser pump light source leads to frequency drift;

2. The frequency drift is caused by the instability of the power supply voltage of the laser pump light source;

3. The line width of the laser pump light source is too narrow, which makes it vulnerable to external vibration and interference.

When dealing with the frequency instability of the laser pump light source, we can take the following measures:

1. Strengthen the stability of the laser pump light source, such as using constant temperature control technology to maintain a stable temperature of the laser pump light source. This can effectively avoid the frequency drift caused by the temperature instability of the laser pump light source.

2. Control the power supply voltage of the laser pump light source. How to achieve a suitable operating voltage can be adjusted according to the actual situation, so as to avoid the phenomenon of frequency drift.

3. Select the laser pump light source that meets the requirements. The better laser pump light source generally has the characteristics of wide line width and anti-interference.

In addition to the above measures, a spectrum analyzer can also be used to detect whether the frequency of the laser pump light source is stable. If the frequency drift is found, timely measures should be taken to adjust it.

In short, it is not difficult to solve the problem of frequency instability of laser pump light source. As long as we take appropriate measures or choose a suitable light source, we can effectively avoid the problem of frequency instability and ensure the normal operation of the laser marking machine. run.

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