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Measuring the performance of a laser has possible for a number of years and is accomplished with a variety of techniques. These electronic laser measurement solutions give the laser user more relevant, time-based data that shows trends in laser performance rather than single data points. While these solutions have provided laser users with the ability to present data in a simple and easy to understand manner, the application of the data still seems to be unclear to many laser users.

  • How often should data be collected?
  • What measurements should...

Abstract
The discovery of Rayleigh Scattering by 3rd Baron Rayleigh, John William Strutt, served an explanation of why the sky is blue during the daytime and different hues of orange, pink, and purple in the early morning hours and at dusk. But it was only recently that this phenomenon has been applied to the measurement of high-powered lasers. Only through the measurement of the laser source and laser system can the user of the laser fully understand its performance and then start to control the processes in which they...

By Kristen Winterton, Calibration Technician, Ophir-Spiricon LLC

VIDEO: Online Calibration Portal

Ophir-Spiricon is proud to announce the release of our new online Calibration Portal. This portal will allow you to track the status of open RMAs and maintain calibration information for all equipment. You may access our Calibration Portal at http://...

Kevin Kirkham, NW Regional Sales Manager, Ophir-Spiricon, LLC
The NanoScan 2s is the newest scanning slit, sensor-based, beam profiling system from Ophir-Spiricon LLC. It can profile pulsed laser beams with repetition rates in the 10 kHz range and above. To enable the measurement of these pulsed lasers, the profiler incorporates a "peak connect" algorithm...

Question: How can I be certain that my Beam Profiler is measuring accurately? Is there a standard calibration methodology?

Answer: There is no calibration standard from which one can verify their camera based beam profiling measurement accuracy. Spiricon has done the next best thing to provide customer confidence in reliable and consistent results from its camera based profilers. The issue can be broken down into two major areas; 1) the input (camera), and 2) the output (from software algorithms)....

To handle a beam who’s power is unstable, you’ll first need to observe the behavior of the readings. Unstable power can take two forms:

1. Fluctuations , where the time constant is short,

Fluctuations , where the time constant is short,

2.Drift, where the time constant is longer

...

Each Ophir power/energy sensor is provided with a functional data sheet with helpful information about its particular operational parameters and specifications. Below the typical specifications are notes, in fine print, partly because there is quite a lot of really useful information contained therein that is being sized to fit on one page. These notes are categorized as Notes: (a) (b) (c) (d) …etc. corresponding to their particular specification association.

These notes are very...

BeamGage does have the ability to run multiple instances while connected to the same camera source, which can add benefits such as simultaneous mutually exclusive results. For instance, you can display the Beam Width Major and minor result along with the Beam Width X and Y result, which on one instance of BeamGage is a one or the other limitation. Additionally through automation, the results from the multiple instances could be acquired simultaneously thus expanding the potential utility of the BeamGage application...
The NS v2 software is the same for both Standard and Professional, no need to download/install a different version. To perform the upgrade you must purchase the license for the NS v2 Professional. With the included license key you can click on the blue scanhead image in the left corner and select About from the dropdown, where you can then upgrade the scanhead from the Upgrade License box (see below)...

BeamGage does have the ability to lock out controls and the modification of reported results through the Options Privileges feature.

In BeamGage, click on the Options button and then the Privileges item and the following dialog box will open. In order to access this privilege control, the user must be assigned Administrator privileges on the local machine...

By Dick Rieley, East Coast Regional Sales Manager, Ophir Photonics

Over the years, different approaches have been used to heat treat metals, typically relying on large furnaces where an entire object is subjected to the heating process. This method can consume substantial amounts of energy and is not a useful approach when attempting to heat treat a specific area or portion of the equipment. The use of lasers to perform this heat treating process has become a well-accepted approach. Understanding the...

John McCauley, Product Specialist, Ophir Photonics Group
echnological advancements in laser sources and the systems in which they are integrated have provided the industrial laser user with higher quality and more consistent laser processes. Laser OEMs and systems integrators continue to make improvements in their products and services thanks to partnerships with system component manufacturers, laser applications development houses, and end users...

By Mark Slutzki, Product Manager, Ophir Photonics

Introduction
Because a laser beam provides a vehicle for delivering energy in such a precisely controlled way, and without physical contact, it’s not surprising that the laser has found so much use in medical applications.

It’s used as a surgical tool (Fig. 1), cutting through various types of tissue in place of the traditional scalpel, and simultaneously cauterizing blood vessels as it goes, so that bleeding is...

Mark Slutzki Product manager

High power laser systems are making their way into more and more industrial applications. From cutting steel, to drilling via holes in silicon, to marking plastic, a whole range of processes now make use of the laser to produce results not previously practical. Advances in fiber lasers in particular, with their scalability, beam quality and wall-plug efficiency, have made laser beams with powers of many tens of KW a common tool available to commercial users. Even processes...

by Lawrence Green Ophir-Spiricon, LLC

Acrylic Mode Burns have historically been universally used because they are the lowest cost alternative to the budget-minded end user. This method, however has been cited for producing dangerous, cancer-causing airborne materials, and is not a real time technology. On the other hand, Real-time beam profiling has been historically too expensive for the average user to acquire.

We discuss a new technology that enables the design of a new low-cost real time CO2 high power beam profiler that is within...

Question: How can I be certain that my Beam Profiler is measuring accurately? Is there a standard calibration methodology?
 
Answer: There is no calibration standard from which one can verify their camera based beam profiling measurement accuracy. Spiricon has done the next best thing to provide customer confidence in reliable and consistent results from its camera based profilers. The issue can be broken down into two major areas; 1) the input (camera), and 2) the output (from software...

The FL250A-LP1-DIF-33 is specified over the range 0.4um – 3um. However, as the spec points out, it is only calibrated at 3 specific wavelengths (532nm, 755nm, 1064nm); what if your laser is "none of the above", say, Erbium at 2940nm?

The FL250A-LP1-DIF-33 uses the LP1 absorber, whose spectral response is not flat, and also has an alumina diffuser – whose spectral response is also not flat. Although we do have the full measured curve as part of the regular...

BeamGage has the ability to lock out the ability to make changes to the settings in case you inadvertently change something you shouldn't have, or if you want to lock out operators in a production environment from making changes that violate testing procedures

To do this, click on the application icon in the upper left corner of the application and then click on the Options button next to the Exit button. In the dialog box that pops up on the left side click the Privileges item....

Questions like these are common, given the sheer number of parameters Ophir's BeamGage software calculates from each beam profile. When faced with all these various metrics, it's natural to wonder which ones are more important or if one parameter is the best one to describe your laser.

The challenge is, all lasers are different and so one parameter that describes a laser well in one instance is not very important in another. In this particular example, "goodness of fit...

By John McCauley, Product Specialist, Ophir Photonics Group

Most anyone working with lasers today will tell you that it is an exciting field. Applications of coherent light at different wavelengths are ever increasing and show no signs of plateauing. The skills required to understand, troubleshoot, and correct problems with lasers, and the systems they are a part of, are in high demand. It's all part of an evolution whereby yesterday's laser technician has turned into today...

Proper alignment of the MS-1780 is essential for its operation, and this can occasionally seem difficult to achieve. Here is a simple method for making sure the system is properly aligned to get the “first light” conditions that will allow easy fine tuning for experimental results.

In order for the system to work properly the laser beam needs to enter the optical center of the aperture on the horizontal axis of the instrument. In order to be able to fine-adjust the beam it is useful to use steering mirrors to direct the beam....

The selection of a sensor to accurately measure the power of a laser or energy of a pulsed laser can seem like a simple and easy procedure. However, many times the selection process is limited to choosing a sensor that only meets the range of power or energy to be measured, leaving out several other essential criteria of the laser specifications; that without their consideration, can allow the wrong sensor to be selected, the laser to be measured inaccurately and likely to cause the sensor to fail prematurely.

Watch Our Laser Measurement Video

By John McCauley, Product Specialist, Ophir Photonics Group

Having worked in laser marking and engraving for several years, I can say that there is a certain mindset when it comes to laser quality that, in some cases, could be a dangerous one, especially in industrial applications. The mindset is, “If the laser is making a mark, then why check the performance of the laser?” Let’s discuss this as it relates to several different laser applications, including why this mindset could be...

This document was created to assist our valued customers in the proper care and maintenance of Ophir thermal laser power sensors. The following information is for reference only. If you have any reason to believe that the sensor is no longer performing within the original specifications,we always recommend that you send it in for repair and/or recalibration by our trained technicians to bring the unit back to the proper NIST traceable standards. We believe that Ophir thermal sensors can be used for many years without any repairs when used with the proper laser optical setup. We hope that this document will enable you to also enjoy the long life and reliable results for which Ophir-Spiricon is known.

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