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FAQ's Laser Beam Profilers

Q&A: M-Squared Laser Beam Quality

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What’s M-Squared, again?

If you’re not familiar with M2 already, it basically sums up your laser beam quality in a single number.

M2 takes a look at your beam caustic (the curve of the laser beam as it focuses and diverges again) and compares this to an ideal Gaussian beam caustic.

So if your beam is perfectly Gaussian, you’ll get M2 = 1. For high quality beams, M2 might be 1.1 or 1.2, for lower qualities you can get up to 3, 4 and even double digits for some low quality high power lasers.

So, how do you know what the M2 of your laser beam really is?

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Modern production facilities must constantly increase throughput, at less cost, with less scrap, and with minimum downtime. In this video overview, you will learn how application of new, advanced technology in measurement devices, can help both designers and users of industrial laser systems to optimize and control their processes, so they can accomplish these goals and achieve consistently good results – both in quality and quantity.

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Laser Beam Profilers Videos

Focus shift monitoring of high power lasers

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Measuring the focal spot of a high power laser is challenging, at best.

The main issue is that when a high power laser is focused down to a small point, the power density can be extremely high, typically high enough to damage any sort of measurement equipment you would use.

The solution?

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Let’s be honest.

We’d all just prefer that our lasers always worked exactly as they’re supposed to.

Who really wants to measure their laser, when they can just be using it instead?

However, like all processes, a laser must be controlled to be used efficiently, and it must be measured to be controlled (and used) properly.