A laser is a complicated animal. Whether you’re a lab researcher or an industrial worker, there are several parameters you might need to calculate, such as power density or ideal focus spot size. We’ve recently added a few calculators to our website. I hope these calculators make your work just a little bit easier. We…
M-Squared is arguably the most important factor when determining the potential efficiency of your laser.
But, it can be a pain to measure. Here are 2 ways you can use that actually DON’T move the camera or the laser
Profiling small laser beams and measuring the beam size (or mode field diameter) can be a serious challenge. But it’s critical to measure, especially in such applications as fiber optic coupling efficiency, defect scanning, optical design and optical fabrication process control. Here’s how we suggest you do it
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.
There’s been some confusion lately about the “laser” setting on an Ophir power meter. Joe will ask: “What if my laser isn’t exactly one of the predetermined wavelengths? Will it still work?” Amanda says, “Can I set the Nova II to 633nm to check how much of that wavelength is in my broadband light source?”…
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?
When using a camera to profile your laser, it’s important to keep the ratio of laser size / pixel size higher than 20. Not only does this increase the resolution of your profile image, but it also makes your measurements more accurate. (If you have fewer than 20 pixels in your beam, the measurement accuracy…
In this short “Basics” video we review in general how one goes about measuring laser beam power, so that you’ll have a clear understanding of what the different sensor types are, and when to use each type. Contact us
Ever wonder whether your laser power meter will read differently depending on the room’s temperature? I’d like to offer a quick guide to show you when temperature matters and when it doesn’t. Contact us
There’s been some confusion lately about the “laser” setting on an Ophir power meter. Joe will ask: “What if my laser isn’t exactly one of the predetermined wavelengths? Will it still work?” Amanda says, “Can I set the Nova II to 633nm to check how much of that wavelength is in my broadband light source?”…