- High power handling: up to 5W (CW with internal photodiode) or 40W (CW with external photodiode)
- High power density: 100W/cm²
- Compatibility: use with OPM150 or OPM500 power meters via optical fibre or photodiode
High quality polymer integrating spheres for laser and LED applications.
For high power measurements, it enables the monitoring of power fluctuations on a time scale of µs (for comparison thermopiles: 1s at best), very advantageous e.g. when setting up high power CW lasers.
- Reflective material: ultrawhite polymer
- Sphere diameter: 50mm
- Input port diameter: 12.5mm
- Cooling: convection
- SMA and FC fibre ports, photodiode ports
SP-Series with rotatable Azimuth
Artifex Engineering manufactures high quality polymer integrating spheres for laser and LED applications.
High power measurements are often performed using thermopile detectors. Thermopiles however, have the disadvantage of reacting very slowly – typical rise times lead to measurement periods of 1 second at best. The combination of an integrating sphere and a photodiode based power meter opens the possibility of measuring high power fluctuations on a µs time scale. This can be useful for setting up and debugging high power CW lasers.
Our polymer integrating spheres are machined from solid material – not coated. These robust devices are perfect for measuring laser power in the visible to NIR.
These spheres are compatible with our OPM150 and OPM500 series of power meters using a fibre patch cable or the photodiode port. Just plug it in to your USB port and start measuring!
Ports:
- SMA fibre
- FC fibre
- photodiode
| wdt_ID | wdt_created_by | wdt_created_at | wdt_last_edited_by | wdt_last_edited_at | Photo | Name | Description | Connector | Compatibility | Link |
|---|---|---|---|---|---|---|---|---|---|---|
| 10 | benjamin | 08/06/2026 01:36 PM | benjamin | 02/07/2026 04:44 PM |  |
Universal Port Adapter for SP50 Integrating Sphere | Our universal port adapter is a flexible accessory for the lab environment. The adapter is mounted to the front surface of the integrating sphere using four screws. Different threaded holes and drill holes allow the mounting of parts from standard optomechanical systems from third-party providers, e.g. cage and tube systems. | Flexible | • SP50 |
Buy |
| 13 | benjamin | 15/06/2026 12:49 PM | benjamin | 02/07/2026 04:44 PM |  |
FC-Adapter for SP50 and G65 Integrating Spheres | FC fibre adapter to allow fibre input to integrating spheres and free beam optical power meter detector heads. This adapter uses our proprietary design to eliminate back reflections into the detector which would otherwise result in miscalibration of the detector. The mounting holes are compatible with our P50 and G65 integrating spheres. |
FC | • SP50 • G65 |
Buy |
| 14 | benjamin | 22/06/2026 01:17 PM | benjamin | 22/06/2026 04:54 PM |  |
SMA-Adapter for SP50 and G65 Integrating Spheres | SMA fibre adapter to allow fibre input to integrating spheres and free beam optical power meter detector heads. This adapter uses our proprietary design to eliminate back reflections into the detector which would otherwise result in miscalibration of the detector. The mounting holes are compatible with our P50 and G65 integrating spheres. |
SMA | • SP50 • G65 |
Buy |
General Operation
What is an integrating sphere used for?
An integrating sphere measures total optical power independent of beam shape or direction, making it ideal for LEDs, laser diodes, and fiber outputs.
Why use an integrating sphere instead of a standard photodiode?
A photodiode measures only incident light at its surface, while an integrating sphere collects light from all directions, providing accurate total power measurement.
What coatings are used inside the gold integrating spheres?
Gold coatings are highly reflective diffuse materials optimized for the infrared.
What sizes of integrating spheres are available?
Integrating spheres are available in many diameters depending on application and power level. These sizes include 20mm, 25mm, 50mm, 65mm, 100mm 115mm, and 200mm diameter.
Can high-power lasers damage the sphere?
The maximum optical power depends on the size of the sphere and detector used. Limits for your configuration will be outlined in the documentation provided.
Could a part be provided for your integrating spheres to limit input apertures for varying sizes?
We can provide customised solutions to fit your requirements.
Do you offer recalibrations for your Integrating Spheres?
Yes, we do. Periodic calibration is recommended to maintain measurement accuracy.
Can you measure larger ranges than what is listed in your brochure?
Multiple photodetectors can be connected to the sphere at the same time allowing for great flexibility in what each sphere can measure.
Setup
How do I align a beam into an integrating sphere?
Alignment is generally not critical since the sphere diffuses incoming light.
Can integrating spheres measure LEDs?
They are widely used for LED power and luminous flux measurements.
Can multiple ports be used simultaneously?
Integrating spheres often have multiple ports for detectors, sources, and monitoring equipment.
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Do you need further information? Find useful links here!
Artifex Software Development Kit
The SDK is a fixed, free component when purchasing a device.
It comes with the source code of the application program (in VB.net) and a LabView VI with the basic functions of the instrument. A description of the communication with the devices and a list of the commands used is also included.
