kW PowerMax Pro Sensor

Features:

Very Fast 30 μsec response time

Measures high average power to 3 kW

Large 30 mm active area

Less than 1% back reflection

QBH adapter available

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
Cooling Method³	Water
Cable Type	DB25
Cable Length	3m (9.8ft.)

Specifications

PMP 1 kW

PMP 3 kW

Average Power Range¹ (continuous)

1W to 1 kW

1W to 3 kW

Maximum Pulsed Peak Power (kW)

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 (%)

when used with QBH Adapter

Wavelength Range (%)

Fixed calibration point ±50

Calibration Wavelength²

810 nm, 1070 nm, 10.6 μm

Cooling Method³

Water

Cable Type

DB25

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.

Part Numbers
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
Optional Accessories
QBH Adapter Plate	1319787
C-Mount Adapter Plate	1319788
Replacement 1070 nm Window	1324793

Part Numbers

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

Optional Accessories

QBH Adapter Plate

1319787

C-Mount Adapter Plate

1319788

Replacement 1070 nm Window

1324793

Call +1 800 527 3786

Outside the U.S. +1 408 764 4983

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Coherent Inc.
5100 Patrick Henry Drive
Santa Clara, CA 95054 USA

email: tech.sales@coherent.com

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Drawing Packages
Click the links below to download a complete drawing package for these products.
	PowerMax-Pro 1 kW (1324794, 1324795, 1324796, 1324797, 1325221)	PowerMax-Pro 3 kW (1325222, 1325223, 1325224, 1325225, 1325226)
	QBH Related Drawings (1319787, 1319788, 1324793)

kW PowerMax-Pro Sensor