BW-NIR-2-155
SP90390
Dual axis - BeamWatch non-contact, focus spot size and position monitor for focus spots from 155μm and larger (see operating space charts)
BeamWatch
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
Power Levels of 1kW to over 100kW
GigE Ethernet Interface
BeamWatch End User or Technician Analysis Software included
BeamWatch utilizes disruptive technology to measure laser beam characteristics of very high power lasers. By not intercepting the beam and yet providing instantaneous measurements, you can now monitor the beam 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 several times per second and know if there is any focal spot shift during those critical start-up
moments.
Disruptive Technology
BeamWatch is the first device to measure a laser without coming in contact with its beam which allows it to be the first laser quality measurement product in history to have no upper limit on the lasers which it can measure. BeamWatch provides high-power industrial laser users with data never before seen such as the dynamic measurement of focus shift caused by thermal effects on the laser system. BeamWatch also provides the industrial laser user with measurement of other key laser operating parameters in real-time.
The system measures the signal generated from Rayleigh scattering around the laser’s beam waist, where the power density is the highest. Rayleigh scattering is a physical property of light caused by light scattering off of air molecules. Unlike traditional beam measurement systems, the beam passes directly through BeamWatch and is not disrupted, mechanically or optically. In addition, BeamWatch has no moving parts so there is no need for cooling of any components. Specialized system software dynamically measures the signal multiple times per second, allowing the laser user to key in on critical operational laser attributes, such as beam waist size and position with respect to the material being processed.
BeamWatch Technician User Interface
Technician Mode: The technician has access to those tools needed for start-up and advanced beam diagnostics.
Focus Spot Size (Waist Width)
BeamWatch images the full beam caustic measuring the waist at its smallest point, many times per second.
Focus Spot Location
Now you can precisely know the dynamic behavior of focal spot shift throughout the laser duty cycle. By inputting the known distance from the laser delivery head to a precise datum on BeamWatch the focal spot distance is constantly measured and tracked with millisecond updates.
Example using dual axis technician screen
Assured Process Consistency
Measure as often as needed to assure repeatable and consistent process uniformity. Mount BeamWatch into the process or manually insert BeamWatch and make periodic measurements.
You can also automatically compare to initial process validation measurements and utilize automated pass/fail.
Automation Interface
BeamWatch includes the tools to support Automation Clients written in Visual Basic for Applications (VBA), C++ CLI, or any .Net compliant environment, such as Microsoft Excel or National Instruments’ LabVIEW.
Product Specifications
Model
BeamWatch
Wavelength
980-1080nm
Minimum Power density
2 Megawatts/cm2
Minimum Spot Size
SP90390
155 microns
SP90391
55 microns
Maximum Beam diameter at entrance/exit
12.5mm
Communication to PC
GigE Ethernet
Power
110 – 220 Volts AC
Particulate Purge
Clean Dry Gas, approximately 10 LPM
Accuracy
Waist Width (Spot Size)
±5%
Waist Location
±125 micrometers within the BeamWatch window
Focal Shift
±50 microns
Beam Parameter Product
±3.5% RMS
Divergence
±3.5% RMS
M²
±3.5% RMS
Specification subject to change
Operating Space Charts
The plots are intended to give a visual indication of the recommended operating space for BeamWatch. If BeamWatch is operated outside of this space, it may be more difficult to see the curvature of the caustic or the beam may be large enough at the edges of the image that it is out of focus.
The maximum waist is dependent on the power density and M2 of the beam. Specified is a minimum power density of 2 megawatts/cm2 and the M2 vs waist width is shown in the corn-looking graphs. Following these charts also covers the 12.5mm max beam size as it enters and exits the unit.
The 12.5mm maximum beam size at entrance and exit is the physical clear aperture of unit, and is the same for all models.
ֺ Optimal has at least 3 Rayleigh lengths on both sides of the waist, with the waist at the center of the image
ֺ Near Optimal has at least 3 Rayleigh lengths on 1 side of the waist, with the waist at the end of the image
ֺ Acceptable has at least 1.5 Rayleigh lengths on both sides of the waist, with the waist at the center of the image
Drawings
Software Features
Software Features
Dual Axis
Results - Power/Energy
Relative Power
Results - Spatial
Waist Width X & Y
Waist Location X & Y
Focal Shift X & Y
Centroid X & Y
Width at Cursor X & Y
Ellipticity at Cursor
Rayleigh Length X & Y
Waist to Cursor X & Y
Results - Beam Quality
M2 X & Y
M2 Average
K X & Y
K Average
BPP X & Y
BPP Average
Divergence X & Y
Divergence Average
Results
All results can be shown/hidden.
Frame Info
Frame ID
Timestamp
1D Profile
Logarithmic or Linear
Control to enable/disable the beam width markers
Profiles are drawn at the cursor location. Cursor is controlled in the 2D display
Display shows current cursor location and width at cursor results
The X and Y profiles are overlapped in a single display
2D Beam Display
Overlays that can be enabled/disabled
Fitted caustic and drawn beam area
Raw data points
Beam Image
Alignment Crosshair – Marks the center of the display for each axis
Beam can be displayed vertically or horizontally on the screen
Labels indicate X and Y axis and the direction of beam propagation
Cursor can be moved to any point along the beam
Focal point indicators – one shows current waist position, another shows first found waist position
Statistics
Mean, Std Dev, Max, Min, and Sample Size
System Requirements
PC computer running Windows 7 (64) and Windows 10 Laptop or Desktop:
GHz Pentium style processor, dual core recommended
Minimum 2GB RAM
Accelerated Graphics Processor
Hard drive space suitable to hold the amount of video data you expect to store (50-100 GB recommended)
Ordering
BW-NIR-2-155
SP90390
Dual axis - BeamWatch non-contact, focus spot size and position monitor for focus spots from 155μm and larger (see operating space charts)
BW-NIR-2-55
SP90391
Dual axis - BeamWatch non-contact, focus spot size and position monitor for focus spots from 55μm and larger (see operating space charts
商品属性 [传感器] Silcon CCD Camera