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Coherent PM3Q Power Sensor

Updated:2024-11-05

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  • Brand: Coherent
  • Model: PM3Q
  • Description: This PM3Q sensor is an amplified thermopile power sensor intended for measuring low power lasers down into the mW range. It includes a quartz window to more effectively eliminate thermal background ra
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Product Details

Coherent PM3Q Power Sensor Description:

Datasheet

This PM3Q sensor is an amplified thermopile power sensor intended for measuring low power lasers down into the mW range. It includes a quartz window to more effectively eliminate thermal background radiation. Note that the window limits the spectral range to 0.3 to 2 µm.

The sensor is terminated in a SmartSensor DB25 cable and is directly compatible with all power meters in the catalog. A USB-direct model (PN 1191133) is available.

For a wider spectral range, the similar PM3 model (PN 1098336) does not include the quartz filter, enabling a spectral range of 0.19 to 11 µm.

Key Features:

500 µW to 2W range

10 mm diameter active area

Spectrally flat broadband coating

0.3 to 2 µm spectral range

Quartz window

Convective air-cooled

ISO 17025 accredited

Specifications

Cable Type
PM DB-25
Cooling Type
Air
Power Range
500 µW to 2W
Active Area Diameter
10 mm
Detector Coating
Black
Noise Equivalent Power (milliwatts)
0.02
Maximum Intermittent Power (watts)(<5 minutes)
3
Wavelength Range (micrometers)
0.3 - 2
Maximum Power Density (kilowatts per square centimeter)
0.5
Maximum Energy Density (millijoules per square centimeter)
50, 10 ns, 1064 nm
Response Time, Speed-up On, 0% to 95% (seconds)
2
Window
Yes
Diffuser
None
Calibration Uncertainty (%)(k=2)
±1
Power Linearity (%)
±1
Spectral Compensation Accuracy (%)
±1.5
Calibration Wavelength (nanometers)
514
Cable Length (meters)
2

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