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| BA500 Industrial Laser Beam Analyzer |
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Monitor all important
beam parameters to keep tight control over process |
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Powers up to 1500W, energies up to 100J
and beam diameters up to 30mm |
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Portable - can be moved from laser to laser
to monitor all lasers in plant |
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BA500 measures beam profile, temporal pulse
shape, power, energy and frequency |
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BA100 pass through system for beam profile
only. Can look at focal spot as well. |
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The BA500 is a comprehensive laser beam
analysis system for pulsed industrial Nd:YAG and Diode lasers for
monitoring all important laser beam parameters so as to obtain reproducible
laser cutting/welding process results.
The BA500 measures average power, energy per pulse, spatial beam profile
and temporal beam profile. All these quantities can be recorded in
digital form for storage and analysis.
The BA500 is a self contained system, which is tailored for industrial
Nd:YAG or Diode systems. There is no need for the user to add any
beam modifying beam splitters, attenuators or other components on
his own. The low profile system easily fits into typical installations
and is designed for vertical laser beams. The user only has to remove
the focusing lens, place the BA500 under the parallel beam and it
is ready to measure.
On site training is available to get the maximum use from the diagnostic
capability of the BA500.
For those users needing to measure only the beam profile and power
of industrial lasers, model BA100 is available. The BA100 is also
useful for looking at focal spots since the object plane is outside
of the unit at the top of the input flange. The BA100 passes approximately
95% of the beam thru so the user must provide a beam dump underneath
or alternatively buy a slim profile matching power meter from Ophir
Optronics to go with it.
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The
BA500 measures:
Spatial Beam Profile
Temporal Pulse Shape
Average Laser Power
Energy per Pulse and Frequency
Schematic setup of BA500 system
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| Specifications
of BA500 and BA100 |
| General |
BA500 |
BA100 |
| Max and Min average power |
1500W to 10W (a) |
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| Maximum average power density |
4KW/cm² (a) |
6KW/cm² (a) |
| Max and min energy |
100 Joules to 100mJ (b) |
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| Maximum energy density and repetition rate vs.
pulse width |
| pulse width |
max energy density |
max rep rate (BA500 only) |
| 10ms |
250J/cm² |
80Hz |
| 1ms |
60J/cm² |
800Hz |
| 50µs |
8J/cm² |
9KHz |
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| Dimensions |
33cm L x 18cm W x 14cm H |
27cm L x 18cm W x 12.3cm H |
| BeamStar beam profiler unit |
BA500 and BA100 |
| Camera |
½" format 10 bit digital CCD with IEEE1394 firewire
interface. Built in optics reduces the beam diameter, attenuates
the intensity and images the beam on the CCD. |
| PC interface |
Cardbus firewire card for laptop or PCI firewire
card. Provided with system. |
| Shutter speeds: |
Continuously variable 1/frame rate to 1/8,000,
manual or automatic |
| Gain control |
0dB to 14dB, manual or automatic |
| Frame rate |
Up to 30Hz automatically synchronized with laser
pulses. |
| Software features |
Automatic gain and shutter control. Peak and
Centroid position tracking. 2D and 3D contour map. Sophisticated
noise and background control.. Best fit to gaussian or top hat
profile 3D display viewable from any angle or elevation. Store
and recall screens in single or video fashion. 3 different measures
of beam width, %of peak, 4 sigma and 90/10 knife edge. Save
numerical data files of profiles. Log data with time. Full on
line instructions and help. Fully flexible screen format. |
| Minimum PC system requirements |
>500MHz Pentium. (2GHz Pentium P4 for best performance),
256 MB Memory, IEEE 1394 Interface Requires PCI or CardBus Slot.
Operating system, Windows 2000 or XP |
| Intensity adjustment |
Continuously variable filters actuated from outside
the unit. |
| System optical performance |
BA500 |
BA100 |
| Field of view |
±2.5° |
±5.7° |
| Maximum beam size |
ø30mm |
19.6 mm W x 14.8mm H |
| Beam reduction |
7X |
4X |
| Resolution |
~80µm |
~40µm |
| RP power/energy/temporal profile
unit |
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| Temporal pulse shape response time into oscilloscope |
1µs |
N.A. |
| Software functions with Laserstar display |
average power, energy per pulse, pulse rate, statistics, missing
pulses |
N.A. |
| Data logging |
Can send unlimited number of points in real time to PC via
USB Interface at >1000 point/s. Windows software provided for
data analysis. |
N.A. |
Notes:
| (a) |
The power density limitation
applies to any surface that the beam hits. For the BA100, since
the object plane is outside the instrument, focal spots of much
higher power density can be imaged as long as the power density
limit on the optical surfaces is not exceeded. For the BA100,
in addition to the power and power density rating of the BA100
itself, the user must provide for an appropriate beam stop for
the total power since most of the beam passes through. |
| (b) |
The BA500 and BA100
will not resolve pulses of energy below 100mJ unless the pulse
rate is high. If the energy deposited in 1/50th of a second
exceeds 100mJ, then the unit will be able to show the pulses
even though the individual energies are below 100mJ. |
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