Broadband 20 µW to 2 W Thermopile Sensor with Ø9.5 mm Aperture
Broadband 20 µW to 2 W Thermopile Sensor with Ø9.5 mm Aperture
The 2A-BB-9 thermopile sensor is a very sensitive laser power and energy thermal sensor with very low noise and drift. It has a 9.5 mm aperture and can measure optical power from 10 µW to 2 W and energy from 10 µJ to 2 J. It is spectrally flat and covers the spectral range from 0.19 to 20 µm.
- High sensitivity broadband 0.19 to 20 µm absorber
- 20 µW to 2 W power measurement range
- 20 µJ to 2 J energy measurement range
- Very low noise and drift
- Fiber optic adapters available See All Features
Features
Choosing a Thermal Sensor
In this short “Basics” video we review the use – and selection - of thermal sensors for measuring low, medium and high laser powers.
Sensors for Measuring Laser Power
In this short "Basics" video we review in general how one goes about measuring laser beam power, so that you'll have a clear understanding of what the different sensor types are, and when to use each type.
Thermal Power Sensor Accuracy
Ophir former CTO Dr. Ephraim Greenfield discusses the various factors that contribute to uncertainties in measurement when using Ophir laser power and energy meters.
Effects of Incidence Angle on Measurements
In this video, you will learn to what degree a beam’s incidence angle matters, and for which sensor types this should be taken into account.
Thermal Sensor Calibration
As the spectral sensitivity of the absorber used for the power and energy measurement is not fully linear, Ophir sensors get a high precision calibration by default with more than one wavelength.
Each thermal sensor is calibrated independently of a particular Ophir power meter with its calibration information contained in the DB15 plug. When the sensor is connected to the meter, the meter reads and interprets this information to display a calibrated reading. Each power meter is calibrated independently and has the same sensitivity as an other meter within about 2 tenths of a percent.
Unless otherwise indicated, Ophir sensors and meters should be recalibrated within 18 months after initial purchase, and then once a year after that.
Accessories
Fiber Connector Adapters
Sensor Connector to BNC Adapter
Resources
Data Sheets
High Sensitivity Thermal Sensors 10μW to 3W Datasheet(229.9 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
2A-BB-9 Drawing(156.9 kB, PDF)
Technical Notes
Absorption, Angle Dependence and Damage Graphs for Thermal Sensors(216.1 kB, PDF) 5 Situations Where Laser Performance Measurement is Necessary Effect of Ambient Conditions on Laser Measurements How do I know what range, or scale, to set my power/energy meter to? Setting Your Thermal Sensor up in Energy Mode for the Best Accuracy and Repeatability How Much of the Power Sensor Aperture Can My Laser Fill Up? How to Properly Select a Laser Power or Energy Sensor Common Reasons for Thermal Sensor Damage or Out of Tolerance Conditions
