DAVI Laser

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FAQs

If the laser output window mirror is polluted, how to deal with it? And whether can wipe it with cotton swabs?

Wiping with cotton swabs will damage the output window mirror. If the front mirror is only attached a small number of particles, and the coating of the mirror has not burnt, then try to use nitrogen with a purity of 99.95% to wipe the mirror. It is do necessary to unplug the power supply before doing it.

If the size of the beam spot is already known, how to choose the size of the lens in the optical path?

The size of the lens for the external beam path should generally be selected as twice the actual spot size.

What is the reason that the output power at the laser outlet is sufficient, but the power at the terminal of processing is very low?

This situation is generally caused by the presence of high energy loss in the external optical path of the laser.  Users should check the following points: Whether the size of the lenses of the external beam path and the size of the aperture of the beam passage is large enough. 1. Whether the quality of the lenses of the external beam path is qualified, and the loss of a single lens cannot exceed 3% 2. Whether the lenses of the…

What should be done if the power of the laser tube is low or unstable during working?

The user needs firstly check the following items: 1. Measure the DC power supply voltage of the laser with a multimeter to see whether it is normal. 2. Use an oscilloscope to measure the laser DC power supply output, to observe whether there are large fluctuations. 3. Use an oscilloscope to measure whether the control signal to the laser is normal. 4. Measure whether the chiller works normally and the flow rate meets the requirements as well. 5. Check whether…

New laser source has no beam output

1 Check the power supply 1. Check whether the power supply wiring is normal. 2. Confirm the power supply specification. For details, see [Attachment: CO2 Laser Power Supply and Water Cooler Configuration Table]. 3. Measure whether the power supply has normal output. 2 Check the control system 1. Check and confirm whether the signal cable is properly connected. 2. Confirm whether the controller outputs PWM signals. 3. Use a voltmeter to detect whether there is a 0-5V output voltage between PWM…

Beam suddenly stopped output during working

Phenomenon: The lasers suddenly stopped emitting beam after working for a period of time, but it returned to normal if restarted. 1 Laser overheats protection (Air- cooled laser sources) Due to the ambient temperature is too high, the lasers have been working under the condition of near-full duty cycle for a long time, under poor cooling conditions, and excessive dust on-site that cause dust accumulation on the lasers fan and heat sink, or chassis enclosure with poor air circulation, all…

Laser power output variation

1 Beam path 1. The components on the beam path block the laser beam; 2. The lenses on the beam path are contaminated or damaged; Picture 2: Broken lens of the beam expander 3. The transmittance of the optical lens used to the 10.6/10.2/9.3 μ m wavelength is low; 4. The laser type is not suitable for application. The beam path is too long but if choose a laser source with low power ,it cannot meet the requirements. 2 lenses of…

The laser source has no beam output

1 The lasers not ready for working This situation usually occurs during the step of start-up. The reason is the ambient temperature is low or the lasers is not used for a long time, resulting in a long preparation (periodization)time of the laser source. The solution is as follows: Recover the laser source temperature to workshop temperature, preheat the laser source with 1% power for 5-10 minutes after 30s of start-up, and then increase the power gradually after laser beam emitting….

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