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Ophir StarLab

Ophir StarLab, laser measurement software various functions & application overview

StarLab 3.30: New Capabilities

StarLab is Ophir Photonics laser measurement software that, together with the appropriate instruments, converts your PC into a multi-channel laser power/energy station. ...

Video Series: BeamGage Tutorials

Watch the BeamGage Tutuorials, including tips on handling your CCD camera, software install, introduction to the BeamGage user interface, the context-sensitive help system and user manual,...

FluxGage LED Luminaire Test System: Setup and Use

Ophir’s new FluxGage LED Luminaire Test System helps you measure the critical performance parameters of your LED luminaires, so your production can be controlled and predictable. ...

Introduction to the StarLab Application

This video gives an overview of the StarLab application and its various functions. Part 1 of a series of video segments teaching you how to use StarLab.

LT665 Beam Profiling Camera

The LT665 Laser Beam Profiling Camera is a large format silicon CCD high resolution camera. It accurately captures and analyzes wavelengths from 190nm - 1100nm. It features a compact design, wide...

FL600A: High Power Fan Cooled Laser Sensors

The FL600A-BB-65 and FL600A-LP1-65 are compact sensors that can measure very high laser power levels up to 1100W with no need for water cooling; this is almost twice the power of competitive...

High Power Sensor Measures Lasers to 120KW

The 120K-W Laser Power Sensor is the first commercial sensor for measuring very high power 120kW lasers. The sensor is designed for fiber lasers used in industrial material processing, such as...

BeamGage Laser Beam Profiling System

BeamGage® is a state-of-the-art beam profiling system that performs extensive data acquisition and analysis of laser beam parameters, including beam size, shape, and uniformity, and divergence. It...

StarBright Laser Power/Energy Meter

StarBright is a compact, feature-rich, handheld laser power/energy meter. Displaying measurements from pW to kW’s and pJ to hundreds of Joules, StarBright measures power, single shot energy,...


BeamSquared, a compact and fully automated tool for measuring the propagation characteristics of continuous wave and pulsed laser systems from the UV to NIR to Telecom wavelengths.


Ophir-Spiricon introduces BeamCheck, the laser additive manufacturing quality assurance measuring device.

To install StarCom on your PC please do the following:

  • Please uninstall previous version before installation.
  • Download Download V3.20 (3.75 MB) - [32-bit].
  • Run the file and follow the on-screen instructions.
  • After installation is completed, you can Run the StarCom Application from your computer Desktop.

Note: StarCom must be installed with Administrator privileges


Pyroelectric sensors are energy sensors, meaning they measure the energy of pulsed laser sources…not the power of steady-state CW sources. In order for pyroelectric sensors to output a measurement a single shot or repetitively pulsed laser source is required. If you are trying to verify that a pyroelectric sensor is operating and currently do not have a pulsed laser source to direct onto it, they will usually output various measurements when tapping on the mechanical housing indicating that they are operating OK.


StarLab 3.30 does include new features which may require a firmware upgrade of the meter or PC interface, I.E. Juno, in order to operate with it. The required firmware is included with StarLab 3.30, but you do need to click on the More… link in the Select Device(s) menu in order to launch the Diagnostics menu and then proceed with the Upgrade firmware procedure. After performing the firmware upgrade, the meter or PC interface will connect with StarLab and operate normally. Note; Upgrading the firmware will not affect calibration.


The calibration process insures that a sensor is working within in-tolerance performance, similar to “as new” condition. Typically when there is a damaged area on a power sensor disk, that particular area will exceed the disk uniformity specification, which is ±2% across the active surface area of the disk, and therefore (with a damaged area on a sensor) it will be rejected for calibration because it is outside of the acceptance criteria to pass the calibration procedure requirements.


The thermal power sensors have a non-linear absorption curve through-out their wavelength response range and have various laser wavelength settings to correct for the non-linearity. If the wavelength settings are saved at different laser wavelength settings, then they will produce a different measurement. The laser wavelength setting, when saved, stays with the sensor, not with the meter. Note; all new meters and interface units will update their initialization of the sensor when it is connected, except for the Nova, which must be turned off and on again when connecting a new sensor in order to initialize it.


BeamGage has the ability to connect to an Ophir USB power meter to display the power measurement in the BeamGage Results window without needing to install the StarLab software. You can run the Spiricon Driver Manager and select Ophir Power Meter to install the drivers for the Ophir USB interface units and meters. However, if your interface or meter has an older ROM version that needs to be updated, you will need to install the latest version of StarLab that can be downloaded from our web site here to update your ROM version so it will then show up in BeamGage.


When a laser has a beam size that is too large to fit onto the CCD it is necessary to use lensing to reduce the size of the beam so it can fit. This can be done in one of two ways, a beam reducer or an imaging system. When direct imaging in front of the camera, like imaging an image projected onto a defusing surface such as a ground glass plate, it is necessary to reduce the image so that it completely fits onto the CCD chip surface. A 25mm or 50mm CCTV lens images an object from a given plane in front of the lens onto the CCD while reducing the size. The lens can image such objects at distances from about 10cm in front of the lens (20cm for the 50mm lens) to 1 meter or more depending on the distance from the lens to the CCD. The distance from the lens to the CCD depends on the camera type and spacers placed between the lens and the CCD. The magnification reduction is dependent on how far the object is from the lens and the amount of distance the lens is to the CCD detector. Below is an example of how this is done and some graphs showing the Object distance vs. Lens spacing and Size reduction vs. Lens spacing.

How do I profile a laser with a beam size that is too big to fit onto the camera CCD detector


The choice of meter depends on what range of functionality you need (unlike the choice of sensor, which depends on the technical, physical parameters of the laser). Just to give a quick general idea:

  • For just basic measurements, no graphics or analysis, and/or when budget is tight, the StarLite is a good choice.
    • If you might want to connect your StarLite to a PC, getting the StarLite with the USB Enabling added will allow you to connect to a PC with the "StarLab" laser measurement application running.
  • For a solid set of functions, perhaps onboard logging, things like Density, Limits etc, then Vega
  • For higher capabilities, combined functions, graphic display options, etc, then StarBright
  • For working only connected to a PC (as opposed to also working stand-alone), a PC interface such as Juno

You may find our Meter Finder very helpful - a detailed comparison table of features and capabilities of the various Ophir instruments. And, needless to say – feel free to ask Ophir for help!


To install StarLab on your PC please do the following:

  • Download StarLab V3.31(98.8 MB)
  • Run the file and follow the on-screen instructions
  • After installation is completed, StarLab can be run from your computer

Note: StarLab must be installed with Administrator privileges


The new “LP2” type sensors are specially designed for beams having high power and high power density (and for pulsed beams, high energy density). The LP2 sensors are replacing the equivalent LP1 sensors; as impressive as the LP1 is, the LP2 was developed with the following improvements:

  • Very high damage threshold, for both power density and energy density, for long pulse and CW beams;
  • Spectrally flat; since its absorption remains constant at widely differing wavelengths, this means that sensors based on the LP2 can be used for "white light" or polychromatic beams;
  • Very high level of absorption (as high as 96%, depending on wavelength), meaning much less light is scattered back, which for high power beams is an important benefit;
  • The absorption is also largely independent of incident angle, which means it can be used for divergent beams too.
  • Download Nova VIs (468 KB) and run it.
  • This will run the WinZip Self-Extractor and default to unzip the Nova VI's to "C:/Program Files/National Instruments/LabVIEW 6.1/instr.lib". To select a different target folder, press the "Browse" button.
  • Press the "Unzip" button to complete the self-extraction process.
  • Press "Close" to close the session.

System Integrators will need the following components:

  • OphirLMMeasurement COM Object.pdf lists and describes the methods and events available for configuring, controlling and uploading measurements from Ophir devices.
  • OphirLMMeasurement.dll. COM object component developed and supplied by Ophir for communication with the Juno, Nova-II, Pulsar, USBI, Vega, StarBright and StarLite devices. The COM object is registered when the application is installed.
  • OphirLMMeasurement COM Object.pdf describes how to register it on another PC where the Ophir application has not been installed.
  • Standard micro-B USB cable (P/N 7E01279) for use with the StarBright device (included).
  • Ophir provides example projects of COM Object clients in VC#, VB.NET and LabVIEW. These are found in the Automation Examples subdirectory of our StarLab PC Application.
  • For direct control of the device, refer to User Commands.

In order to get started, install the latest version of StarLab on your PC. The COM Object registration is included in the StarLab installation process.


We recommend only using clean, dry, low-pressure dust-off air spray for gently blowing dust specs and contamination away from the CCD camera sensor. Do not use anything that makes physical contact with the sensor surface. The sensor is delicate and is surrounded by micro connecting wire-bond wires which will likely break if anything physical contacts them.


The cameras included with BeamGage have separate drivers that need to be installed in order for them to be recognized by BeamGage and connected to it. BeamGage installs a Spiricon Driver Manager utility that facilitates installing the appropriate driver for the particular BeamGage camera. You simply launch the Spiricon Driver Manager, click on the camera model listing that matches your camera and click Install. The Spiricon Driver Manager utility is accessed at the Windows Start/All Programs/Spiricon Tools location.


BeamGage Ultracal is the camera baseline correction process that nulls the camera background energy so accurate measurements can be obtained. Upon completing the Ultracal baseline correction cycle, the Ultracal checkbox will turn ON and a Green “U” indicator will illuminate in the status bar. When a camera setting changes that can compromise the Ultracal accuracy, the “U” indicator will turn Red, and Ultracal processing will be suspended. You may notice that the Ultracal Indicator has changed to Red, indicating Ultracal suspension, and not know what changed to cause it. To see an explanation for Ultracal suspension, hover over this indicator with the mouse pointer and a pop-up message will appear providing information of what changed that caused the Ultracal suspension.


The various RM9 radiometer models are fully compatible with these meters/interfaces:

  • Vega / Nova II (firmware version 2.44 or higher)
  • Juno (1.31 or higher)
  • StarLite (1.26 or higher)
  • StarBright (1.18 or higher)

They are partially compatible with Ophir’s other meters (Nova, LaserStar, USBI, Pulsar, and Quasar). They will function properly with these devices, except with a narrower power range and with reduced accuracy; see specs for more details.


The analog output of the meter - using the mating connector provided – gives a voltage signal proportional to the actual reading (it is in fact just a D/A translation of what is being displayed), so it represents a fully calibrated reading. The full scale value is a function of the meter being used and the power range it is on. With the StarBright, Vega and Nova II, for example, the user can select full scale analog output voltage ranges of 1v, 2v, 5v or 10v, and the 100% level of the chosen power scale is scaled to the full scale voltage. For example: if you choose 5V full scale analog voltage range, and your sensor is set to a 50W full scale power range, then you will have 5V = 50W or 0.1 V/W. It will vary according to the chosen power range and chosen full scale voltage range. The electrical accuracy is stated in the specification (see the User manual) as ±0.2% (of reading) ±0.3% of full scale volts (in addition to the calibration accuracy of the sensor’s reading itself).


In theory, if a beam is completely parallel and fits within the aperture of a sensor, then it should make no difference at all what the distance is; it will be the same number of photons (ignoring absorption by the air, which is negligible except in the UV below 250nm). If, nevertheless, you do see such a distance dependence, there could be one of the following effects happening:

  • If you are using a thermal type power sensor, you might actually be measuring heat from the laser itself; when very close to the laser, the thermal sensor might be “feeling” the laser’s own heat. That would not, however, continue to have an effect at more than a few cm distance unless the light source is weak and the heat source is strong.
  • Beam geometry – The beam may not be parallel and may be diverging. Often, the lower intensity wings of the beam have greater divergence rate than the main portion of the beam. These may be missing the sensor's aperture as the distance increases. To check that you'd need to use a profiler, or perhaps a BeamTrack PPS (Power/Position/Size) sensor.
  • If you are measuring pulse energies with a diffuser-based pyroelectric sensor: Some users find that when they start with the sensor right up close to the laser and move it away, the readings drop sharply (typically by some 6%) over the first few cm. This is likely caused by multiple reflections between the diffuser and the laser device, which at the closest distance might be causing an incorrectly high reading. You should back off from the source by at least some 5cm, more if the beam is not too divergent.

Needless to say, it’s also important to be sure to have a steady setup; a sensor held by hand could easily be moved around involuntarily, which could cause partial or complete missing of the sensor’s aperture at increasing distance, particularly for an invisible beam.


These sensors have a gold-coated reflecting cone, which can be easily scratched. If one of these sensors needs to be cleaned, we recommend blowing with clean air or nitrogen. If, however, the cone gets soiled (for example with something spilled on it), such that blowing is not enough to clean it, then there is a risk of the contaminant material getting “burned in” by laser radiation. In such a case, to avoid that risk, one should use a suitably soft tissue with solvent, and wipe as gently as possible.


With the release of BeamGage 6.9.1 the ability to install an Ophir power meter is available through the Spiricon Driver Manager. This allows the Ophir power meter equipment to work with BeamGage, and without the need to separately run the StarLab PC power meter application. The Spiricon Driver Manager can be accessed at the end of the BeamGage installation or at a later time by clicking on the Windows Start, going to All Programs\Spiricon Tools and select Spiricon Driver Manager. With an Ophir power meter connected through the USB cable, then Under “Select a device:” you will now see an option to install the Ophir Power Meter. Click on the Ophir Power Meter and then the Install button, located to the right, to install a connection to the Ophir power meter equipment. Power meter control options are now available through BeamGage such as selecting the appropriate wavelength and power/energy scaling factor.


If the pulse width is incorrectly set to a pulse width shorter than the actual pulse width of the laser, the reading will be erroneously low. If it is set to a setting longer than necessary, the reading will be correct but noisier. The Ophir pyroelectric sensors can measure long as well as short pulses. In order to operate properly, the pulse width must be set to a maximum pulse width setting longer than the actual laser pulse width. Therefore the pulse width should be set to the shortest pulse width longer than the actual laser pulse width. (Some sensors only have one pulse width setting and measure all pulse lengths on this setting. In this case “N/A” will appear). To set up for pulse width with the Vega meter, please do the following: From the main measurement screen, press the 3rd from the left soft key. The choices of pulse width will appear. With the navigation keys, select the smallest value larger than your actual laser pulse width and press “save”.


Our recalibration process is to not automatically upgrade the firmware in meters when they are sent in for recalibration, unless specifically requested to upgrade it. The reason for this is that we support many companies, such as medical companies, that have equipment validation processes that don’t allow changing the firmware version from the currently validated version. If you do want the latest firmware version installed, we will do that at no additional charge (for meters which are upgraded electronically) if it is specifically requested on the RMA request checklist form. For older meters (such as the Nova) that are upgraded through changing the EEPROM, a nominal fee is added, if firmware upgrade is requested. Note; upgrading the firmware does not affect the calibration.


The spec was designed around the way such lasers are typically used. Since these lasers are normally used with focusing optics, the spec of the 120K-W does not give a maximum power density; rather, it defines the assumed focusing-lens focal length and position such that the beam will end up having a 100mm diameter at the cone, and defines the assumption of a near Gaussian beam under those conditions so we can define a baseline number. This is defined briefly in the spec, and in a bit more detail in the User Note that comes with the sensor.


You can try our Nova II demo online. It can be found here. You can use this demo to connect to different sensor styles and check the meter’s and sensor’s functionality. You can also simulate a laser by imputing exposure levels. This simulator does not allow you to try every sensor, but it can give you an idea how the meters work and how sensors interface with the meter.


With Trigger In mode the camera will only start to expose and transmit a frame of data when a trigger signal is sent to the camera. There generally are timing issues when using photo detectors with pulsed lasers and CCD camera frame acquisition. The BeamGage Trigger In feature provides delay adjustment to move the camera acquisition timing in order to synchronize with the pulsed laser firing. The delay can be set in milliseconds to be either later or earlier in the exposure window. A negative delay entry is settable for pre-triggering when needed. When the beam is present but not displayed, adjusting the delay will allow for good synchronization and a consistent pulsed beam display.


Other than by connecting a camera and collecting data, the best way to verify that your BeamGage installation is working correctly is to select Beam Maker as the source. You should see a simulated beam come up in the display. If it does not, it signals that the installation of the software has failed to install one or more components correctly. The solution is to uninstall and reinstall the software, ensuring that it is performed with administrator privileges.


The two units can not be run concurrently but it is possible to run both systems on the same computer. In order to have both run, however, you will need to have the most recent versions of both software packages. M2-200s software version 4.97 or later will be required to run the M2-200s if BeamSquared 2.0 or later is installed as well.


There are two common occurrences when M² results are less than 1.  The first and most common of these results from the operator entering the wrong wavelength value. In this case the results are often well below 1, in the .8-.9 range. The second most common cause is due to nominal accuracy tolerances. These are normal and expected. With a 5% M² tolerance results from ~.95 to ~1.05 are possible. Averaging runs will normally return a mean value to something > 1, but not always.


It has been suggested that if the M² results are computed to be < 1 we should display a 1 as the answer. However the algorithms in the BeamSquared software make computations and report results as the input settings and the beam samples dictate. This is done to provide useful information to the operator rather than to try and conceal the issue. 


Before allowing laser energy to enter the instrument, it is important to limit the beam intensity. Excessive laser energy may cause damage to the camera or the internal components of the BeamSquared optical train. 


Typically, a CCD camera sensor can be damaged at energy levels in excess of 1 mJ/cm² or at power levels greater than .15 mW/cm². Adjust these input limits downward based on the likely focused spot size resulting from your M² lens focal length. Beam splitters and/or filters may be used to attenuate the beam, but care must be used to prevent the introduction of distortions.


During an M² measurement operation, the peak energy density that reaches the camera will change, potentially over several orders of magnitude. This is a result of the camera effectively moving from a larger unfocused spot near the lens, into and through the focus at the waist, and then out again to an unfocused spot (see the Adjusting Brightness section in the manual). The Linear attenuators in the optical train will automatically adjust to accommodate these changes in beam intensity, so long as  the operator, has prudently selected the initial beam intensity. Thus, it is the operator's responsibility to attenuate the laser sufficiently to operate within the safe dynamic range of the BeamSquared system.

BeamGage systems and BeamSquared systems are separate and the cameras with them are not always interchangeable.  However, if you currently have an SP300, XC-130, or one of our Pyrocam IIIHR or IV cameras, you can upgrade these cameras to be compatible with the BeamSquared software (Note: Pyrocams are not compatible with the optical train). 
The cameras sold with BeamSquared systems are licensed for BeamGage Standard as an added benefit. This allows further analysis with the camera outside of the BeamSquared software.

Because of the design of the lenses for the new BeamSquared, you will be able to use lenses on multiple systems. We have included an RFID chip on each lens which holds the information for that lens. We have also programmed the BeamSquared optical trains to have their calibration information stored in the device. With this improvement the configuration files for pairing optical trains and lenses are no longer required making lenses interchangable.


The ModeCheck background calibration cycle may get stuck due to some environmental conditions which cause the wand position to become difficult to determine. You may be able to restore operation by cleaning the back side of the wand where the wand passes the optical sensor.


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.


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.


The IEEE 1394 adapter card driver is likely not set properly to one that includes the name Basler. You will need to update the driver for the IEEE 1394 adapter card that the camera is connected to manually. Go to the Windows Device Manager, right click on the adapter card driver, select "Update Driver Software", then "Browse my computer for driver software", then "Let me pick from a list of device drivers on my computer". At this point, select a driver from the list that includes Basler in the name. Complete the wizard and then disconnect the cable from the back of the camera for 5 seconds, then reconnect it. Watch for a Basler category to show up in the Windows Device Manager at the top of the list. When it does, you should be able to open the FireWire BeamPro software again and select your camera from the list.


The 1780 is designed to provide an instant M2 value with no moving parts, making it possible to get an M2 value from a single shot of a laser, or to get instant feedback on M2 values while tuning a laser. This makes the 1780 great for applications where you need to quickly verify the performance of similar lasers.


An unused port should be closed, to prevent unwanted light from entering the sphere. Closing it with a diffuse white port plug, however, adds the surface area of that plug to the (diffuse white) effective area of the sphere that is doing the “integrating”. For a calibrated integrating sphere sensor, this change in the behavior of the sphere changes its calibration, and results in incorrect readings. In such applications, a black “Port Cover” should be used.


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.


Each sensor from Ophir includes a performance specification datasheet but not a user manual. This datasheet lists operational parameters for the sensor, including items such as spectral range, power range, aperture size, accuracy specification, etc. Copies of these datasheets for current sensors are available on the website by clicking on the “Specifications” tab of the sensor's product page.
As for the user manual, a hard copy of the user manual is included with every meter sold. The manual also has a section explaining the operation of the various types of sensors; thermopile, photodiode, and pyroelectric. Copies of the meter user manuals are available on the web site at:
If for any reason you are not able to find the particular information needed or are not able to retrieve the manuals or information from the website, just send us an email request to and we’ll get the information for you.


We have recently updated our website product pages to include drawings of items. If you are looking for a drawing for an Ophir-Spiricon product, please visit its product page and click on the Drawings tab. Drawings are available in a number of different formats including PDF, SolidWorks, and STEP.


An example of this is the 10K-W, which uses a reflective cone to spread the beam before it reaches the absorber. Because of the way the 10K-W is built, a small beam in the center is spread out more than a large beam. A 10mm beam, for example, is spread out to about 5 x140mm = 7cm² a reduction in power density of 9:1 . A 45mm beam is spread out to about 22.5 x 140mm = 31cm². The power density of the 10mm beam is reduced 9 times, but the power density of the 45mm beam only goes down by about 2 times. This does not apply to sensors that don’t have a cone reflector.


If the energy is just a bit over-range, up to 10% above the top of the scale, the meter will give a correct reading of energy and frequency, together with an “Over” warning. If the energy is way above the top of the scale, though, the reading will very likely be nonsensical, but without the “Over” warning. With Ophir’s Pyro-C energy sensors, there is never a “saturation” message on the meter - the output from the sensor can never actually reach saturation. Of course, being “way over” the top of a measurement scale – and not noticing - is not a likely scenario. Common sense is often the best defense.


Well, partly right.

Ophir has for many years had a few sensors that are designed for intermittent use. They are marked by two numbers like 50(150), which means it can measure 50 W continuously, or 150 W for a brief exposure (1.5 minutes in this example). Keeping in mind that power is energy over time, and that it is the total energy absorbed over time that causes a sensor to heat up, it should be possible to expose a sensor to “too high” power but only for a short time, and have the sensor survive the experience. The sensor can treat that short exposure as if it were just one long “single shot” pulse, and measure the energy of that pulse. Divide the energy by the (known) pulse width, and that gives the power during the pulse. (It can’t measure power directly this way, though, since a thermal sensor’s response time to power is itself a few seconds). For example, the moderate-power L40(150)A-LP2 has a 10KJ energy scale (several other sensors also have multi kJ scales); to measure power of an 8KW beam, we can fire the laser for 0.5 seconds with the sensor in energy mode, and we’ll measure 4KJ energy in the “pulse”. Dividing that by 0.5 seconds gives the 8KW beam power. Of course we then need to wait for the sensor to cool before repeating, but in some applications that may be perfectly OK
If you have the StarBright meter, you can do the above automatically, with any power sensor, using StarBright’s “Pulsed Power” function where you input the pulse duration and the meter will give the readout directly in power.


The BeamGage and NanoScan software are offered in either Standard or Professional versions with corresponding associated cost. The software upgrade from BeamGage Standard to Professional requires a license key and the installation of the Professional version of the software, which is available from the software download section from our website. The NanoScan V2 software upgrade, from Standard to Professional, only requires the license key. To purchase the upgrade please contact us at for current pricing. We will need the serial number of the unit(s) for upgrading.


There are seven LEDs for different status/error indications. From left to right (and top to bottom), the LEDs are:

  1. Power
  2. COM (Green)
  3. COM (Red)
  4. Link (Port 1)
  5. TX/RX (Port 1)
  6. Link (Port 2)
  7. TX/RX (Port 2)

For more detailed information, see Chapter 7 of the manual.


Whether RS232 or Profinet is used, there is a command to query the current temperature. The customer is responsible for integrating this into the measurement script and coordinating with the laser control to make sure the laser is not allowed to be measured when the temperature is over the limit. If using the PC application, one should select: Options > Log Temperature Enable. This will show the current temperature (and log it). If the temperature goes over the limit, it will turn red.


This is limited by the temperature the Helios body reaches, that is measured by an internal sensor. The temperature shouldn’t be allowed to exceed 60° C. In our experience, this translates to about 40 kJ of accumulated exposure. Of course, the longer one waits in between pulses (allowing the body to cool), the more total energy it can take. That is why the temperature sensor should be used as the primary indicator of overheating, while 40 kJ should be treated as a rule of thumb.


Basic use with Profinet requires one power supply cable and one Profinet cable. Using RS232 or the PC application requires one power supply cable and one RS232 cable. If you want to use the Helios in a line/star topology, where it is daisy-chained with the next device in line, then you should use two power supply cables and two Profinet cables.
RS232 uses a standard DB9 RS232 cable. Profinet uses a Profinet-grade cable and RJ45 connectors. The power supply is a standard Profinet power supply from the Han PushPull series. For more information and mating connectors, see Chapter 3 of the manual.

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We know that sometimes people really do want the all-in-one pen with compass et al, but other times they really just want the basic product. Before StarLite came...

A Quick Guide to Optical Measurement Devices

All I know is I want to measure light. Should I use a light meter, lux meter, laser power meter, optical power meter, radiometer, photometer, spectrometer, or something else I have yet to hear of?

Video: Quality Control 4X Throughput

[:en]In this video, Dick Rieley (Mid-Atlantic Sales Manager) recounts how a customer was able to increase his laser measurement  throughput by 4x! ...

Assuring Correct Metallurgy in Direct Laser Melting

[:en]Additive manufacturing has restructured prototyping, development, and advanced design of mechanical components. Direct Metal Laser Melting, also known as Selective Laser Sintering or 3D Metal...

Laser Beam Optics Calculators

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...

How to Calculate Laser Beam Size

[:en]Gaussian laser beams don’t have a simple cut-and-dry beam width. If you’re not familiar with the math behind a “Gaussian” you might wonder why this would be. ...

Using a Silicon Beam Profiler for UV Lasers?

Read this before you do any damage. Technically, silicon absorbs well down to 350 nm, and could even work at lower wavelengths (to 190 nm). However, silicon is especially susceptible...

Max Power (Saturation) of CCD Beam Profilers

CCD cameras are used very often as UV, visible, and near-infrared laser beam profilers. When selecting a beam profiler, you always need to check the laser parameters against the beam profiler...

Find a Sensor for Your Laser Power Meter

To measure laser power (or energy), you need two things:Sensor to physically convert the laser to an electrical signal A power meter to convert the analog signal to a readable measurement (and...

Chiller Requirements for High Power Meters

Water-cooled sensors are used for measuring high power lasers. Here's a short guide on selecting the right chiller. Three things define the chiller performance (and sensor cooling requirements): ...

Data Smoothing Laser Beam Profiles

The dynamic parts of a laser beam profile are often caused by distortions or noise from camera sources or optical distortions from dirty filters or beam splitters. These dynamics can be removed...

Spectral Wavelength Calibration

All absorbers used in power/energy measurement are not entirely flat spectrally, that is, they vary in absorption with wavelength. For this reason...

Helping Photonics Markets See the Light

I recently had an opportunity to give a presentation to the 8th grade science classes in the local Greenwood Indiana school district near where I live. We talked about lasers and I was amazed at...

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