300 fW to 300 nW Photodiode Sensor with Chopper Radiometer System
300 fW to 300 nW Photodiode Sensor with Chopper Radiometer System
The RM9-PD with Chopper radiometer system is a sensor and optical chopper system for measuring the power of very low level CW or quasi CW sources. The RM9-PD sensor has a photodiode element. The sensor's power range is from 300 fW to 300 nW. It has an 10mm aperture and covers the spectral range from 200 to 1100 nm. The system comes with the RMC1 chopper that is placed between the source and the RM9-PD sensor.
The chopper should be mounted with the side marked "THIS SIDE TOWARD SENSOR" facing the sensor.
- Photodiode sensor with 200-1100 nm spectral range
- 300 fW to 300 nW power measurement range
- Chopper and lock in amplifier for lowest noise and drift
- 10 mm diameter aperture See All Features
Software
Full support available for the RM9 sensor with the Centauri, Vega, Nova II, Juno, Juno+, Juno-RS, EA-1, StarLite and StarBright and with the StarLab application.
There is limited support for the RM9 sensor with the older LaserStar, Pulsar, Quasar and Nova.
To upgrade the meters below to the version that fully supports RM9:
StarBright meters (rev 1.18 and higher) press here
Nova II / Vega meters (rev 2.44 and higher) press here
StarLite meter (rev 1.26 and higher) press here
Juno interface (rev 1.31 and higher) press here
Juno+ press here
Juno-RS press here
EA-1 press here
Centauri press here
Features
Measuring Laser Power Below the Noise Floor with a Lock-In Amplifier
Measuring optical signals in the femtowatt (10-15) to nanowatt (10-9) range can be very challenging. This video explains how Lock-In Amplifiers can help make these measurements possible.
RM9-PD Radiometer System: Powers Down to Femtowatts!
The RM9-PD system measures powers all the way down to 300 fW. This video introduces you to the RM9-PD, and shows you how to use it.
Accessories
P Polarity Power Supply/Charger
5m Molded Cable
Resources
Data Sheets
Low Noise Lock In Power Sensors 300fW to 100mW Datasheet(263.5 kB, PDF)
Catalogs
Power Sensors Catalog(11.2 MB, PDF) Laser Power & Energy Measurement and Laser Beam Analysis Catalog(27.5 MB, PDF)
Drawings & CAD
RM9-PD with Chopper Drawing(262.5 kB, PDF)
Technical Notes
RM9-PD User Notes(163.3 kB, PDF) Measuring Very Low Power IR Lasers with the RM9 Radiometer System 5 Situations Where Laser Performance Measurement is Necessary How do I know what range, or scale, to set my power/energy meter to? Measuring Average Power of Pulsed Lasers with Photodiodes(114.5 kB, PDF)
