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| The performance of today's laser systems can strongly affect the success of demanding, modern laser applications. The beams' size,
shape, uniformity or approximation to the expected power distribution, as well as its divergence and mode content can make or break an
application. Accurate knowledge of these parameters is essential to the success of any laser-based endeavor. As laser applications push
the boundaries of laser performance it is becoming more critical to understand the operating criteria. |
| Ophir-Spiricon has developed instruments to accurately measure critical laser parameters for over thirty years. Our LBA and BeamStar
software have led the way. Now with the introduction of BeamGage, Ophir-Spiricon offers the first "new from the ground up" beam profile
analysis instrument the industry has experienced in over 10 years |
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| BeamGage includes all of the accuracy and ISO approved quantitative results that make our LBA software so successful. BeamGage also
brings the ease-of-use that has made our BeamStar software so popular. Our patented UltraCaltm algorithm, guarantees the data baseline or
"zero-reference point" is accurate to 1/8 of a digital count on a pixel-by-pixel basis. ISO 11146 requires that a baseline correction algorithm
be used to improve the accuracy of beam width measurements. UltraCal has been enhanced in BeamGage to assure that accurate spatial
measurements are now more quickly available. |
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| The Graphical User Interface (GUI) of BeamGage is new. Dock-able and floatable windows plus concealable ribbon tool bars empowers the
BeamGage user to make the most of a small laptop display or a large, multi-monitor desktop PC. |
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| BeamGage's "Dock-able" windows and panels allow the user to customize the display to take advantage of available monitor space. |
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| Our patented, baseline correction algorithm helped establish the ISO 11146-3 standard for beam
measurement accuracy. UltraCal ensures the highest accuracy and reliability in the industry by
retaining negative signals essential for making correct beam width measurements and for extracting
weak signals out of noise. With the baseline set too high, the algorithm interprets the baseline as wings
in the laser beam. Calculated beam widths are now too large. With the baseline set too low, laser wings
are clipped off in the A/D converter. Calculated beam widths are now too small. By setting the baseline
precisely, beam width calculations become more accurate. |
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BeamStar provides various beam width results, Centroid
and Peak locations, as well as Gaussian Fit, and Total Power of the laser
under test. |
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BeamGage and LBA Calculations include Statistics as well |
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| BeamGage permits the user to employ custom calculations. User defined computations are treated just as the standard calculations.
These custom results are displayed on the monitor, logged with results, and included on hard copy print-outs as if they were included in
the original application. |
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| An example of a customer generated custom equation |
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| In BeamGage and LBA open the Pointing Stability program to collect centroid and peak data from the core system and display it graphically.
View a chart recorder and statistical functions in one interface: |
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Peak location scatter plot with histogram color-coding.
Any notations entered here will be
printed with the charts. Notes remain
from one reset to the next and from
one application startup to the next.
Set a sample limit, and specify the
results items to graph on the strip
chart.
The radius is referenced from either
an Origin established in LBA or from
the continuously calculated Average
Centroid position.
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A centroid location scatter plot with
histogram color-coding
A pointing stability strip chart
presents data over time for the
Centroid X and Y, Peak X and Y and
centroid radius from an origin or from
the mean centroid. |
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| With BeamStar, the beam pointing function looks like this: |
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Choose time limit for measurement
Summary of data shown each period in log file
Concurrent with screen, log data to file in csv or text format |
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Record data in microns or input
distance from source and measure in microradians |
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| File Save/Load ApplicationButton |
Quick Access Toolbar for common tasks |
Tabbed Control Access |
2D Beam Display |
Tool Windows that dock inside or float outside
App |
User Definable Window Layout |
Integrated Help System |
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| Beam Results with Statistics |
ISO Compliant Results |
1D, 2D & 3D Profiling Options |
Cursors With Power/Energy Readouts |
Processing Status Indicators |
3D Beam Display |
Buffered Video Panning Controls |
| Selectable computed results
and statistics table. The title bar indicates the frame number associated
with the current result values. |
Set operation mode and frame
capture rate |
Block mode, frame capture
and video trigger setting |
Frame summing and averaging |
Apply gain correction |
Set and subtract reference
frame |
Logging and write-protect |
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| Represents the digitized image
in relation to the camera detector. Soft zoom or pan for best view. |
Tilt and rotation control for
3D view. |
Beam display available in either
2D or 3D. Set a custom color palette, Z-axis scale, wire density and freely
rotate or zoom in for best visible analysis. |
Camera connection, Ultracal,
reference subtract and gain correction status |
Select or browse frames |
View the capture rate and interval |
Adjustable fluence histogram
of the currently displayed frame of data. |
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| Start/stop measurement |
Beam Wander screen |
Cross hairs for vertical and horizontal
profiles. Profile can be linked to cross hair position, centroid, peak or
sum profile can be displayed |
3D display can be rotated or angled at
will. Mouse buttonshift moves image, mouse button-alt sizes image. A wealth
of display choices are available in the menu |
When laser power is entered, the vertical
profile graph is shown in meaningful units of W/cm2 |
Profile graph shows profile chosen in
the 2D display. Flexible system allows user to open as many profile screens
as desired and choose X and/or Y profile or sum profile for each. Shown
is the Gaussian fit screen. A top hat fit screen can also be shown |
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| Add button to add additional
screens. This flexible system allows user to totally customize screen even
to show different screens for different cameras on same screen |
Automated or manual shutter, gain and background
control |
All numerical values are shown in this
compact screen. Note close agreement between 3 different measures of beam
width in this unretouched measurement of a HeNe laser |
User can click on this and enter laser power.
BeamStar will subsequently follow power correctly |
Position is centered on CCD center location
for ease of use |
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| The BeamGage 2D display is
zoomed to increase resolution of the area of interest. The area of
calculations is defined by an ellipse aperture in this BeamGage
image. |
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Cursor data may be overlaid on the LBA 2D display. |
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| The BeamGage image includes calibrated indications of size and intensity. |
| The BeamGage 3D graphics contain subtle shading to improve data rendering and understanding. |
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| BeamGage and LBA allow the user to configure the displayed calculations; set-up the screen layout and password protect the configuration
from any changes. This permits secure product testing as well as data collection for Statistical Process Control (SPC), all while assuring
the validity of the data. |
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| Failures (or successes) can be the impetus for additional actions including a TTL output signal or PC beep and the termination of further
data acquisition. |
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BeamGage offers new data acquisition modes including:
- 1 frame every X frames
- X frames over a predefined time period (T)
- "Burst" mode where X frames are captured every predefined time period (T)
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| LBA provides single shot, continuous, and block mode data acquisition. |
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| The size of the LBA frame buffer like BeamStar, and BeamGage can be defined by the user. As much or as little of the PCs memory and
hard drive(s) may be allocated to the frame buffer. Either the desired number of frames or amount of memory may be allocated to the Frame
Buffer. |
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| BeamGage has the ability to interface to an Ophir power meter. The BeamGage application will match-up the time stamps of the laser power
readings to beam profile data with a similar time stamp. This is the first time in the industry a laser power meter has been married to a laser
beam profile system. |
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| BeamGage, LBA and BeamStar allow the user to input the power or energy associated with a beam profile by keyboard input. Below LBA is
manually calibrated by entering the total Power or Energy contained in the laser under test in the Computations window. |
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| BeamGage contains a utility, BeamMakerTM, that can synthetically generate beam profile data. Beam Maker allows the user to model
both Laguerre-Gaussian and Hermite-Gaussian laser beams in various modal configurations. With these models you have verification and
validation tools that allow not only OSI but also the end user to verify BeamGage's basic beam width measurement algorithms. It can also
be used to model laser beams with special input conditions such as signal-to-noise, background offset, and bits per pixel resolution. This
allows the user to better understand the accuracy of measurements made under both optimum and adverse conditions. This tool provides
the user with a method to validate algorithms against current ISO standards and methods. It can also be used to validate third party
algorithms by making the output data available for use in third party applications. |
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Hermite 6x8 |
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| 2D Legerre 10x2 |
Legerre 2x2 |
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| BeamGage and LBA beam profile analysis
applications interface to both Firewire (1394) and USB cameras while the
BeamStar application interfaces to USB cameras. |
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| Camera Compatibility Chart |
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