Bertin Alpao Shack–Hartmann (SH) wavefront sensors (WFS) are the only range of WFS especially designed for Adaptive Optics.
Key features
They feature excellent performances to fit with every adaptive optics system. Sensitivity, speed and spectral range can be chosen depending on your needs. All Bertin Alpao SHs perfectly fit with ALPAO DMs and ALPAO software and real-time computers.
- Optimized for AO: the number of subpupils adaptated to the fried configuration of the recommended DM, latency minimized
- Speed: frequency up to 28.1kHz, latency as low as 10.7μs (SH-CMOS fast)
- High sensivity: Photon flux for SNR=1 down to 3 photons/frame/sub-aperture (EMCCD)
Specifications:
|
Number of sub-apertures
|
Acquisition frequency (Hz)
|
Photons for SNR=1
(ph./fr/sub-aperture) |
Repeatability (nmRMS)
|
Optimal
Spectral range |
|
|---|---|---|---|---|---|
| SH-CMOS | 50×50 | 119 | 100 | 2 | VIS |
| SH-CMOS fast | 64×64 | 1730 | 1000 | ||
| SH-EMCCD | 16×16 | 1004 | 3 | ||
| SH-EMCCD fast | 24×24 | 2067 | 4 | ||
| SH-InGaAs fast | 64×64 | 690 | 400 | NIR |