Tag Archives: Laser power meter

StarLab 3.30 Pass/Fail limits feature – A closer look

User-defined pass/fail limits allow setting the upper and lower bounds of an acceptable measurement, and getting a clear indication when the measurement deviates from these bounds.

In case you weren’t aware -The ‘pass/fail’ feature can be used as a tool to perform QA final inspection on the laser. Developers can use this to demonstrate the results of a prototype laser to Management (or even VC’s!) as part of the pitch for funding.

How?

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Technical Tip: How to select a power and energy meter – part 2

So, as we’ve started discussing the best way to pick a power meter last week, we’ve reached the third piece of data we need – and that is the laser wavelength. Why is it so important? In order to match it to the sensor absorber characteristics.

We need to select a sensor whose wavelength is within the measurement range of the sensor, power rating is equal to or higher than the maximum power we will measure, whose aperture is larger than the laser beam diameter so that it will contain the whole beam, and whose damage threshold is higher than the maximum expected laser power density at the given wavelength. The sensor absorber should be selected so it matches the wavelength for higher absorption.

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Technical Tip: How to select a power and energy meter – Part 1

Measuring optical power and energy depends on an understanding of the types of sensors and instruments available, and on requirements such as wavelength response, dynamic range, damage threshold, and maximum repetition rate.
Power and energy meters measure the output of an optical source. They are a necessity in a wide variety of applications in the lab, on the production floor, or in the field, whether the emission is from low-light sources, such as fluorescence, or from high-energy pulsed lasers.

No doubt that the need to accurately measure laser power and energy has increased as more of these systems are used in medical procedures and industrial processes.
Although a fairly simple process, this measurement is not as straightforward as an electric power measurement.
With lasers, more attention must be paid to the selection of the right sensor as different sensors perform different measurements.

Selecting the wrong sensor can result in inability to measure well or can even destroy the sensor.

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The trick to measure your (pulsed laser) peak power

If you’re involved with pulsed lasers, doing research, system design, process control, final test, or field service, you are going to want to accurately measure your laser power.
The more you know about the measurement process, the better the results.
However, most pulsed laser power meters display the total energy of a pulse or alternatively the average power, not the peak power.

As an Ophir customer you have the ability to measure the peak power of a pulsed laser beam using Ophir laser measurement equipment.

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MKS’ Ophir® Business Unit Announces StarLab 3.30, Laser Power/Energy Measurement Software

Andover, MA – June 13, 2017 – MKS Instruments, Inc. (NASDAQ: MKSI), a global provider of technologies that enable advanced processes and improve productivity, has announced Ophir® StarLab 3.30, easy-to-use laser measurement software that turns a PC into a multi-channel laser power / energy display station.

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MKS’ Ophir® Business Unit Announces Calibrated Sensor for Measuring Very Low Power THz Sources

Andover, MA, May 8, 2017 – MKS Instruments, Inc. (NASDAQ: MKSI), a global provider of technologies that enable advanced processes and improve productivity, has announced the Ophir® RM9-THz Radiometer, a low noise, high sensitivity sensor for measuring low power levels of 50nW to 100mW from short pulse or CW lasers in the 0.7 to 10 THz wavelength range.

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Measure Laser Spot Size & Power Density

If you read our article from last week, you’re already well aware that additive manufacturing can be used to create parts that are impossible to manufacture in any other way.

However, the quality and reliability of the additive manufacturing system depends on the spot size and power density of the laser.

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Ethernet Laser Power Meter

You can now measure your laser directly from the Ethernet network, without any need to go through a PC.

Ophir’s new EA-1 is an Ethernet Adapter which can be used with virtually all power sensors to turn them into an Ethernet laser power meter

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How to Measure Laser Exposure/Dosage

Laser exposure measurement screen set to stop after 500 pulses

Usually, I talk about measuring power or energy. Today I want to discuss exposure – total energy deposited over time. 

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