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Coherent PM3 Low Power Sensor

Updated:2025-03-13

Brand: Coherent
Model: PM3
Description: This PM3 sensor is an amplified thermopile power sensor intended for measuring low power lasers down into the mW range.The sensor is terminated in a SmartSensor DB25 cable and is directly compatible w
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Product Details

Coherent PM3 Low Power Sensor Description：

Datasheet

This PM3 sensor is an amplified thermopile power sensor intended for measuring low power lasers down into the mW range.

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 1174263) is available.

For enhanced thermal stability, the PM3Q (PN 1098419) includes a quartz window to more effectively eliminate thermal background radiation. Note that the window limits the spectral range to 0.3 to 2.1 µm.

Key Features:

500 µW to 2W range

19 mm diameter active area

Spectrally flat broadband coating

0.19 to 11 µm spectral range

Convective air-cooled

ISO 17025 accredited

Specifications

Cable Type

PM DB-25

Cooling Type

Air

Power Range

500 µW to 2W

Active Area Diameter

19 mm

Detector Coating

Black

Noise Equivalent Power (milliwatts)

0.02

Maximum Intermittent Power (watts)(<5 minutes)

Wavelength Range (micrometers)

0.19 to 11

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

None

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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