Cubo Ver.3 · Launching December 2026
A real-time ellipsometer that fits in your hand.
A monolithic polarizing interferometer with no moving parts measures film thickness more than 20 times per second. In the time a conventional ellipsometer takes to read a single point, Cubo watches the film change.
Drag to rotate.
Verified performance
- Acquisition rate
- > 20Hz
- Δ precision
- < 0.1°
- Thickness repeatability (STD)
- 0.4nm
- Sensor unit
- 141 × 50 × 105mm
Why conventional ellipsometers are slow
Commercial spectroscopic ellipsometers change the polarization state by mechanically rotating a polarizer or a compensator. Because that rotation takes time, a single point takes seconds to measure — and the sample has to hold still throughout.
Cubo uses a monolithic interferometer (MPI) in which two polarizers, set at 0° and 90°, generate a polarization interference signal. Δ is extracted from a single spectrum acquisition, so nothing has to rotate and measurement runs continuously at more than 20 Hz.
What that makes possible
Measure samples while they change
Thickness can be observed as deposition or etching proceeds — the interval that second-scale measurement simply cannot resolve.
Bring the instrument to the sample
The sensor unit is 141 × 50 × 105 mm. No vibration-isolation table and no dedicated metrology room.
Fits a laboratory budget
Commercial ellipsometers typically cost hundreds of thousands of dollars. Cubo targets a price an individual research group can fund directly.
It agrees with commercial instruments
A SiO₂ film measured at 1472.3 nm by a commercial ellipsometer, then measured continuously by Cubo for 20 minutes.
| Sample | Commercial | Initial | Mean | STD |
|---|---|---|---|---|
| 1472.3 nm SiO₂ | 1472.3 | 1472.4 | 1471.8 | 0.4 |
| 496 nm SiO₂ | 496.0 | 496.7 | 496.5 | 0.2 |
Values in nm
Launching December 2026
Register a pre-order and we will contact you as soon as the schedule and final specifications are fixed. You can request a formal quotation at the same time.