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We’d all like to imagine that our things will stay in mint condition forever. But we know that’s not the case. Just like laser degrade (and therefore must be measured), the measurement equipment itself will slowly drift away from its precise calibration.

This is why we recommend yearly calibration. If you aren’t sure when your laser power or energy is due for recalibration, you can check by connecting it to a meter. If it needs to be recalibrated, a notification will pop up on the first screen.

Here’s how the recalibration process works.

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“You can do Profinet, right?”

John had just ordered 10 laser welding stations for his new car manufacturing facility. As a laser system integrator, you talked to him in detail about all the specs. What exactly does he need from the laser? What sort of control equipment does he have? What else does he need?

John added, almost as an afterthought – “The facility is in Germany, so of course we want all the lasers and devices running on Profinet. You can do that, right?”

Uh-oh.

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A few months ago, I mentioned a new method for measuring kilowatt lasers without water (or even fan) cooling.

The idea was like this: Even a small 50 W sensor can handle high powers for a short amount of time, like a few seconds. Several of our sensors’ specifications were adjusted to reflect this.

For example, the L40(150)A is meant to measure 40 W continuously, but it can actually measure 4000 W for a second.

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Lasers are famous for their focusability. (As in: “laser-focus.”)

That’s why many laser power sensors have 30, 20, or even just 10 mm apertures. This is usually more than enough space for a laser beam.

But what about large lasers like diode stacks or non-laser light sources? How can a small sensor measure a large laser beam?