Non-Contact Beam Profiler For Multi Kilowatt 980-1080nm Wavelength Lasers

The patented BeamWatch non-contact profiling system accurately captures and analyzes industrial multi-kilowatt lasers wavelengths from 980nm - 1080nm by measuring Rayleigh Scattering. It features a complete passthrough beam measurement technique, no moving parts, and a lightweight compact design which makes it ideal for comprehensive analysis of industrial multi-kilowatt lasers

  • Beam Waist Sizes down to 55um
  • From 400W and up – no upper limit (So far we have measured up to 100kW)
  • GigE Interface
  • BeamWatch End User or Technician Analysis Software included


  • GigE
  • 55µm - ~2.75mm
  • Silcon CCD Camera
  • ~400W to >100kW
  • 980-1080nm
  • 12.5mm
  • CE, China RoHS
Need help finding the right beam profiler? Try our Beam Profiler Wizard


BeamWatch is available with the following configurations. CLICK HERE for more information on the different configurations of BeamWatch products.
  • BW-NIR-2-155


    Dual axis - BeamWatch non-contact, focus spot size and position monitor for focus spots from 155μm and larger (see operating space charts)

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  • BW-NIR-2-55


    Dual axis - BeamWatch non-contact, focus spot size and position monitor for focus spots from 55μm and larger (see operating space charts

    Request a Quote
  • BeamWatch
    BeamWatch's is a simple means of evaluating the laser performance at periodic intervals. It compares key laser performance parameters against preset ranges to provide Go/No-Go readouts so that the laser user knows when to take corrective actions.



My laptop will not connect to the BeamWatch while connected to its docking station.

Many laptops disable the GigE port on the computer when docked. You can try the port on the docking station itself or use the GigE to USB adapter that came with the unit.

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My beam measurement seems different than I expected. What can I do to check the measurement?

The measurement accuracy has been improved in recent versions of the software. It was discovered that a gain floor needed to be established to prevent early saturation of the camera. This gain floor was implimented in BeamWatch version 2.2.0. Please check your software version. The newest verions of the software from this link. If you are still having problems, please send a data file to our Service Group for analysis at with an explanation of your problem.

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When hooking up the purge line to the BeamWatch, what line-pressure should I allow to enter the unit?

The input pressure for the BeamWatch can range from 20 to 50 PSI. For optimal performance the pressure for operation should be around 40 PSI at 10 LPM.

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With the BeamWatch how can I get readings void of comets or streaks in my image?

It is recommended that you supply clean, dry, filtered air or nitrogen to the BeamWatch. Also allowing the unit to purge for a time and adjusting the pressure with the inlet valve will help to eliminate most, if not all of the comets and streaks in the image. For more information please consult the manual under section 2.4. It is important to keep the dust covers over the openings of the BeamWatch in place until the purge air is flowing in order to prevent dust particle contamination prior to operation.

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Is a beam dump included or needed to operate the BeamWatch?

A beam dump is not included in the purchase of the BeamWatch. We recommend using a beam dump or equivalent product to protect people and equipment. When using a beam dump or a power sensor, it is not recommended to have the beam dump or power sensor too close to the exit aperture of the unit. Doing so will elevate the background which can impact the accuracy of the results.


A few options for beam dumps can be found here.


If you are interested in obtaining power meter readings at the same time, we would recommend some of our high power sensors that can be found here.

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BeamWatch Receives Innovation Award BeamWatch Receives Innovation Award
Focus shift monitoring of high power laser Focus shift monitoring of high power laser Focus shift monitoring of high power laser

BeamWatch™ utilizes disruptive technology to measure very high power YAG and fiber lasers. By not intercepting the beam and yet providing instantaneous measurements, you can now monitor the beam characteristic at frequent intervals without having to shut down the process or remove tooling and fixtures to get access. In addition, you can now measure focal spot location at millisecond intervals and know if there is any focal spot shift during those critical start-up moments.

Application:  Laser Measurement Solutions for High Power Industrial Laser Applications Application: Laser Measurement Solutions for High Power Industrial Laser Applications Application: Laser Measurement Solutions for High Power Industrial Laser Applications

Modern production facilities must constantly increase throughput, at less cost, with less scrap, and with minimum downtime. In this video overview, you will learn how application of new, advanced technology in measurement devices, can help both designers and users of industrial laser systems to optimize and control their processes, so they can accomplish these goals and achieve consistently good results – both in quality and quantity. Read the full article

BeamWatch Dynamically Measures 100kW Fiber Laser BeamWatch Dynamically Measures 100kW Fiber Laser BeamWatch Dynamically Measures 100kW Fiber Laser

The BeamWatch® industrial beam profiling system provides data that has never been seen or measured, even to laser users that have been working with high-power lasers for years. Through the dynamic measurement of beam waist location, the laser engineer can know how changes in power density affect the quality the process. For example, data is now available about the laser’s effect on the quality and consistency of laser welds, cuts, and holes drilled.

Ophir-Spiricon has been honored with a 2015 Utah Innovation Award from the Utah Technology Council for BeamWatch®, the industry's first non-contact, focus spot size and position monitor for very high power YAG, fiber, and diode lasers. Rachael Tyler, mechanical engineer with Ophir-Spiricon explains BeamWatch in this video.


Tutorials and Articles

Attenuation-Induced Error Due to Thermal Lensing in Beam Measurement

The need to profile lasers with powers in the 10mW to 1W range are becoming more common. Many of these lasers are in the visible spectrum, allowing them to be measured with CCD and CMOS camera systems. As with any laser that is being measured with a camera array, the beam needs to be attenuated, but there are some cautions to be observed. These beams are not so powerful that they will damage or destroy typical absorptive filters. In fact, it is possible to stack up a sufficient optical density to reduce the power of a 1W laser to the nW levels that will not saturate the detector. Read more...

The Challenge of Focus Shift in High Power Laser Material Processing

High-power industrial lasers are valuable tools in material processing. Maintaining them at peak performance and optimizing the processes for which they are used will maximize throughput and minimize downtime. Periodic measurement and longterm monitoring of key laser variables, including laser output power, focused spot size, and focus spot temporal location provide the data you need to increase accuracy and optimize your process... Read more...

BeamWatchTM Applications Generate Interest at FMA’s ALAW

by John McCauley, Product Specialist, Ophir-Spiricon

What Happens to Your Weld When Welding with High Power Over Long Periods of Time?

By Nicolas Chaise, Regional Sales Manager, Ophir Spiricon Europe Read more...

Sensor Fusion Enables Comprehensive Analysis of Laser Processing in Additive Manufacturing

By Kevin Kirkham, Senior Manager, Product Development, Ophir

ISO compliance of non-contact, real-time beam analysis

1. IntroductionDuring the past decade laser power levels used in production applications has risen significantly. Today, welding systems are commonly using laser power in the range of multiple kilowatts. To deliver continuously high product quality, the key parameters of the laser beam must be measured on a regular basis. Ophir has tackled the task and developed a non-contact measurement technology based on the Rayleigh scattering. The technology used in the BeamWatch laser beam profilers enables the measurement of high-power beams without ever touching the laser beam. As the technology is Read more...


Customers that purchase the above items also consider the following items:
  • Rotation Mount


    Add-on 180° manual rotation mount to bottom of BeamWatch

  • Locking Ethernet


    Cable Replace standard Ethernet cable with one that locks into place, IP67 rated