Tag: Research

A Power Meter for Large Lasers and Light Sources

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?

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Non-Contact Beam Profiling of 100 kW and Above: How Can This Work?

I’ve mentioned BeamWatch before.

It’s an innovative technique for profiling high power lasers (1 kW and up).

I’ve even touched on the underlying Rayleigh scattering effect that makes this possible.

But how does this really work?

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Best Practices in Laser Measurement: How to Measure an Unstable Laser

It can be frustrating – trying to measure the power of a laser beam whose power keeps changing. In this video, part of our “Best Practices in Laser Measurement” series, you’ll learn how to get good readings even for unstable beams.

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Focusing a Gaussian Laser Beam:Which Formula to Use?

When focusing a laser, or anything for that matter, there’s a handy formula that is used to calculate the focus size and position.

It is generally called the thin lens formula, and it looks like this:

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Don’t Come to Our LASER World of PHOTONICS Booth Unless…

Going to Munich for LASER World of PHOTONICS 2015?

We’ll be showing several new products in Munich, not to mention quite a few of our classics.


You’re going to be busy. You can’t (and shouldn’t) go to every booth. So I’m going to very clear. Our booth is not for everyone. However,

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Worried about High Power (10 kW) Laser Backscatter?

With high power lasers, there’s always a safety concern for equipment and people nearby.

(Of course, I’m not qualified to give a detailed analysis of what needs to be taken into account for laser safety. For that, you should consult a laser safety officer.)

I want to specifically ask whether there’s an issue of laser light reflecting off power measuring equipment.

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Photometric Measurements: Measuring Illuminance with the PD300-CIE

In applications where a human observer is involved (for example illumination applications), it is often important to measure using the eye-response-matched Photometric system of units. Ophir’s PD300-CIE is a photometric sensor, and is designed to measure illuminance (in units of Lux or Foot-Candles).

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The Difficulties in M-Squared Measurement –And How to Overcome Them

A clear benefit of knowing the M2 of your laser is getting a lot of information about beam quality all in one number.

As simple as the output is, it is harder than you may imagine to measure and calculate M-Squared.

Let’s take a quick look at the theory behind M2 to see how it can be measured.

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How to Keep a Laser Power Sensor Clean




These are a few words used to describe an industrial environment.

What about your laser sensor? Will it survive this?

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Improve Your Laser Marking Process

Lasers are amazing. They can cut or weld, drill or solder.  A very general application of laser materials processing is called laser marking.  This can refer to a host of processes, like:  etching, engraving, ablating, etc. Here’s a question I never considered: How can you be sure that your laser will mark the wood (or…

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Peak power vs. Average Power What is it, and how do I measure it?

A pulsed laser could have an average power of, say, 1 Watt, yet a peak power of 1 Megawatt – so when specifying it’s rather important to understand the difference!

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M-Squared: Lasers’ KPI (Key Performance Indicator)

  With all of today’s technology, we are drowning in data. I know this is true in fields like marketing and running a business, and I’m sure it rings true with measuring your laser as well.  There are all sorts of things you can measure, but it’s never worth measuring something unless you plan on…

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