Broadband 20 kW Water-Cooled Ø55 mm Thermopile Sensor Deflecting Cone and Annular Absorber
Broadband 20 kW Water-Cooled Ø55 mm Thermopile Sensor Deflecting Cone and Annular Absorber
The 20K-W-BB-55 is a water-cooled thermal power sensor is designed for very high powers with a 55 mm aperture. It can measure power from 100 W to 20,000 W. It has a deflecting cone and annular absorber that withstands high power densities to 10kW/cm². It covers the spectral range from 800 to 2000 nm and 10.6 µm. Calibrated at 1070 nm. Applications include industrial processes. high-power fiber laser development and testing, directed energy systems, cutting and drilling in industrial production.
- Broadband 800-2000 nm and 10.6 µm absorber with beam deflector
- Water-cooled for 0.1 to 20 kW average power measurement
- Deflecting cone and annular absorber for power densities to 10 kW/cm²
- 55 mm diameter aperture
- Over temperature alarm and interlock See All Features
Features
Scatter Shields: Reducing Back-Reflected Power from High Power Sensors
When measuring very high power laser beams, even the few percent of the beam normally back-scattered from the sensor can be a problem. Ophir now offers Scatter Shields as accessories for our high power laser sensors. These can be mounted on the front flange of the sensors to reduce the backscatter by about 70%.
Measuring Ultra High Power Laser Beams
Laser beams with powers of many tens of Kilowatts are becoming more and more common in today's applications, industrial as well as research. This video will discuss the technical challenges in measuring such lasers, and will show you a range of solutions now available from Ophir for measuring up to 100KW -- safely, and accurately.
Water Cooled Sensors: Things to Look Out For
Water cooled sensors are commonly used when measuring laser beams of more than a few hundred watts. In this video, you will learn about some critical issues you need to consider when using water cooling, such as water temperature, water flow rate, and corrosion prevention.
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
20K-W Scatter Shield Assy
20K-W Protective Cover
Metric water fittings for 20K-W & 30K-W
Resources
Data Sheets
Catalogs
Power Sensors Catalog(11.2 MB, PDF) Laser Power & Energy Measurement and Laser Beam Analysis Catalog(27.5 MB, PDF)
Drawings & CAD
20K-W-BB-55 Drawing(310.4 kB, PDF)
Technical Notes
Absorption, Angle Dependence and Damage Graphs for Thermal Sensors(216.1 kB, PDF) 20K-W-BB-55 User Notes(363.6 kB, PDF) How to Use Water Cooled Ophir Sensors 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? Calibration Accuracy of Ophir’s High Power Sensors 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
