Kilowatt class power measurement with extended average power handling capability up to 3 kW with a 20 microsecond rise time and utilizing the same transverse thermoelectric thin-film HD sensor technology as our standard PowerMax-Pro sensor.
PowerMax-Pro (Patent #9,059,346) represents a dramatic technological advancement in laser power sensing that combines the dynamic range and laser damage resistance of a thermopile with the response speed of a semiconductor photodiode. The sensor is so fast that a kW laser measurement reaches steady state in less than 100 microseconds with no overshoot. This capability provides nearly instantaneous high power measurement.
In traditional kW thermopile detectors, heat is generated in the absorbing coating when it is struck by the laser. The heat must then move through the thick copper substrate out to the edges, a distance of several centimeters, to where the thermocouple array is located. This heat flow takes time, which is why thermopiles take a minute or longer to steady out after the laser is turned on.
The high response speed of PowerMax-Pro sensors is particularly advantageous in commercial applications, where it enables CW laser power and pulsed laser energy to be sampled much more frequently, resulting in increased throughput and improved process control.
|Specifications||PMP 1 kW||PMP 3 kW|
|Average Power Range¹ (continuous)||1W to 1 kW||1W to 3 kW|
|Maximum Pulsed Peak Power (kW)||1||5|
|Noise Equivalent Power|
|Standard Mode (10 Hz)||<50 mW|
|High Speed Mode (20 kHz)||<0.5W|
|Snapshot Mode (625 kHz)||<1.5W|
|Maximum Power Density (kW/cm²)||5.0 at 1 kW avg. power||2.4 at 3 kW avg. power|
|Rise Time (μs)||≤20|
|Fall Time (μs)||≤20|
|Protective Front Window||Available for 1070 nm model (see part number below)|
|Active Area (mm)|
|Axis||30 (element is 57 mm from front plate)|
|Vertical Axis||27.5 (element is 57 mm from front plate)|
|Minimum Beam Size (mm)||10 at 1 kW avg. power||20 at 3 kW avg. power|
|Calibration Uncertainty (&%) (k=2)||±2.5|
|Power Linearity (%)||±3|
|Back Reflection (%)||<1|
|when used with QBH Adapter||0|
|Wavelength Range (%)||Fixed calibration point ±50|
|Calibration Wavelength²||810 nm, 1070 nm, 10.6 μm|
|Cable Length||3m (9.8ft.)|
¹ See power handling curve for beam size requirements.
² Wavelengths typical; model dependent.
³ 1 gpm water flow with less than 10 PSI back pressure.
|Options||PMP 1 kW||PMP 3 kW|
|810 nm (no window)||1324794||1325222|
|10.6 µm (no window)||1324795||1325223|
|1070 nm (no window)||1324796||1325224|
|810 nm, 1070 nm and 10.6 µm (no window)||1324797||1325225|
|1070 nm (with window)||1325221||1325226|
|QBH Adapter Plate||1319787|
|C-Mount Adapter Plate||1319788|
|Replacement 1070 nm Window||1324793|
Click the links below to download a complete drawing package for these products.
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