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Coherent PM3Q Power Sensor

Updated:2025-03-13

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)

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)

Window

Yes

Diffuser

None

Calibration Uncertainty (%)(k=2)

±1

Power Linearity (%)

±1

Spectral Compensation Accuracy (%)

±1.5

Calibration Wavelength (nanometers)

514

Cable Length (meters)

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