
25
• Toll Free: (800) 343-4912 • Tel: (408) 764-4042 • Fax: (503) 454-5727
Model BeamFinder LM-1000 LM-2500 LM-5000
Wavelength Range (µm) 0.3 to 10.6 0.25 to 10.6
Power Range (W) 100 to 1000 100 to 2500 100 to 5000
Resolution (W) 1
Max. Power Density
1
1 to 2.5 kW/cm
2
Max. Energy Density 0.5 J/cm
2
, 1064 nm, 10 ns
Detector Coating H
Active Area Diameter (mm) 35 38 55
Dimensions (mm) 84 x 84 x 25.4 97 x 97 x 69 122 x 122 x 69
(3.3 x 3.3 x 1.0 in.) (3.8 x 3.8 x 2.7 in.) (4.8 x 4.8 x 2.7 in.)
Calibration Uncertainty (%) ±5
Calibration Wavelength (µm) 10.6
Cooling Method Water-cooled
Cable Type LM DB-25
Cable Length (m) 6
Part Number 1098427 1098409 1098437 1098421
Use with LabMax, Ultima, or
LaserPAD (see pages 10-16)
97 mm
(3.82 in.)
97 mm
(3.82 in.)
47 mm
(1.85 in.)
69 mm
(2.72 in.)
Ø38 mm
(1.50 in.)
388 mm
(15.28 in.)
178 mm
(7.0 in.)
11.4 mm
(0.45 in.)
122 mm
(4.80 in.)
122 mm
(4.80 in.)
70 mm
(2.76 in.)
69 mm
(2.72 in.)
Ø55 mm
(2.17 in.)
388 mm
(15.28 in.)
178 mm
(7.00 in.)
11.4 mm
(0.45 in.)
25.4 mm
(1.0 in.)
83.8 mm
(3.3 in.)
83.8 mm
(3.3 in.)
35.6 mm
(1.4 in.)
Laser
Cross-
Reference
Index
POWER
& ENERGY
Power
Sensors
Energy
Sensors
Custom
& OEM
BEAM
DIAGNOSTICS
CALIBRATION
& SERVICE
INDICES
Product
Name
Index
Power
& Energy
Meters
Features
• Water-cooled
• Spectrally at from 0.19 μm to 11 μm
• 1W resolution
• 35 mm to 55 mm apertures
Models LM5000, BeamFinder
These kilowatt thermopile sensors are
water-cooled for measuring output over
100W and are excellent for use with CO
2
and Nd:YAG lasers.
Tap or distilled cooling water is recommended with these sensors – DI
water can not be used. Flow rates are power dependent and range from
0.5 to 4 gallons per minute; pressure depends upon ow rate and ranges
from 3 to 40 PSI (visit product pages at www.Coherent.com/LMC for more
technical details).
Device
Specications
1
The damage resistance of the coating is dependent upon the beam size and prole, the average power level, and the water ow rate.
Contact Coherent or your local representative for details related to your application.
BeamFinder LM-1000 LM-2500/LM-5000
100W to 5 kW
Beam Position Sensing Thermopile Sensors
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