THORLABS PM100USB, Руководство по эксплуатации

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PM100USB
Required Adaptations
1) Adapter Connector
To connect a custom sensor to the PM100USB, an adapter needs to be used. To build the a-
dapter, please refer to the pin-out of the DE-9 connector shown in the
Appendix . A photodi-
ode and an interlock must be connected to the sensor input. Please ensure correct polarity -
the photodiode cathode needs to be connected to ground.
The PM100USB and the utility software Optical Power Monitor will automatically recognize the
presence of an adapter and show "Sensor Type: Photodiode Adapter" in the GUI.
2) Calibration Data
Be aware that spectral response calibration data of your custom photodiode are not sent to the
OPM utility software. It is necessary to account for them in your analysis.
3) Measurement Data
In your experimental setup, it is critical to set the responsivity of the sensor at the measured
operating wavelength in the utility software OPM under Devices-Settings, field: "Responsivity".
Please refer to the specifications of your used sensor.
Note
If the adapter is not automatically recognized or the settings can not be adjusted in the soft-
ware, please contact
Thorlabs .
5.2 Thermal Power Sensors
The PM100USB is compatible with the Thorlabs C-Series of thermal power sensors (S3xxC,
S4xxC, S175C), equipped with a DE-9 connector . The sensor is ready to operate only few
seconds after plugging it to the DE-9 connector.
Thorlabs S3xxC and S4xxC Series of thermal sensors cover a wide range of applications and
are available with different coatings. To choose the appropriate sensor, refer to the section
Choosing the Right Sensor , see the Thorlabs website or contact Thorlabs .
Attention
Refer to the sensor data sheet and pay attention to the optical damage threshold! Exceeding
these values will permanently destroy the sensor!
Sensor Calibration
Thorlabs thermal sensors are calibrated for their spectral response and power at a specified
wavelength. The sensors spectral response data are stored in the non-volatile memory of the
DE-9 connector and are automatically downloaded by the PM100USB and utility software upon
plugging to the power meter.
Measurement Data
In your experimental setup using thermal sensors, it is critical to adjust the following settings in
the utility software OPM.
5.2.1 Wavelength Setting
To perform an accurate measurement it is necessary to enter the operating wavelength of the
measured light in the software. This way, the laser power can be calculated based on the
measured voltage and the correct response value from the wavelength calculation table.
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