Author: OphirBlog

How to Center Your Laser Beam for More Accurate Power Measurement

There are several considerations when you’re trying to maximize laser power meter accuracy. One that I don’t usually mention is perhaps the most obvious question: How do you know the entire laser beam is actually hitting your sensor? I mean, if you have a visible laser, fine.  But most lasers these days are in the…

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Testing Laser Optics for Thermal Lensing and Focus Shift

When laser power gets high enough, interesting stuff happens. One issue that comes up often with laser optics under high power is thermal lensing.  Basically, the heat causes changes in the optical properties of the lenses.  If we’re talking about the focusing lens in a laser delivery head, this means changes in the focal point.…

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Measure LED Luminaires without the Fuss:
Introducing FluxGage for Flux, Color, & Flicker

You have a problem. Your biggest customer just returned a large number of LED fixtures, complaining that they didn’t produce the right flux and their colors varied wildly. You’d like to just blame it on a fussy customer, but you know deep down they’re right.  You wish you could take each and every LED luminaire…

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How to Measure Different Wavelengths with a Laser Power Meter

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?”

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Measure a Wider Range of Laser Powers

Finding a laser power meter and sensor to measure power is pretty simple. (Ophir’s meters and PC interfaces are plug-and-play, so the decision of meter is really a matter of the features you need, not the laser you’re measuring.) The sensor that will best measure your laserpower is a function of just three of your…

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FluxGage LED Luminaire Test System

LED Luminaires are increasingly popular, but producing them consistently, to spec, can be a major challenge. Ophir’s new FluxGage can help you measure the critical performance parameters of your LED luminaires, so your production can be controlled and predictable.

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How to Keep Your Laser Power Meter Sensor Clean

For humans, good hygiene is a key to maintaining good health. Same with laser sensors! This video will give you some valuable tips for keeping your laser sensors clean, so they can maintain top performance longer.  

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Beam Profiling and Resizing of UV Lasers

Getting the beam size and profile of a UV laser is not trivial. The typical beam profiling solution of a CCD camera may not be an option for many UV wavelengths, since the CCD is susceptible to damage.  

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StarBright Laser Power Meter [Video Tutorial]

The new Ophir StarBright is the most advanced of Ophir’s family of handheld laser meters. This video walks you through the range of capabilities, and shows you how to use them.

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How to measure a Barcode scanning laser? [Updated]

Measuring the power of scanning lasers such as barcode scanners presents a problem. A bar code laser beam scans back and forth at a very high frequency so an ordinary photodiode power meter will not measure the power in the beam but rather the average power impinging on it, i.e. the power times the fraction of time the beam is on the detector. Therefore, when exposed to a scanned beam, the reading will be much lower than the actual power in the beam. For example, if a scanning laser delivers 2mW to a photodiode sensor and the beam is on the sensor only 1% of the time, the instrument will read only 0.02 mW.

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What Is an ND Filter? How You Should (and Shouldn’t) Use It

Short answer: A neutral density attenuator. Meaning? Long(er) answer: A filter that attenuates all wavelengths equally.  Well, that’s an ideal ND filter, anyway.  A real one affects different wavelength differently, but the difference is kept to a minimum.

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