Wavefront Sensors

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 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 5kHz, latency as low as 5μs (SH-CMOS-fast)
  • • High sensivity: Photon flux for SNR=1 down to 3 photons/frame/sub-aperture (EMCCD)

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Download WFS datasheet


Number of sub-apertures
Frame rate (Hz)
Photons for SNR=1
Repeatability (nmRMS)
Spectral range
SH-CMOS 50x50 118 100 2 VIS
SH-CMOS-fast 64x64 2030 1000
SH-EMCCD 16x16 1004 3
SH-EMCCD-fast 23x23 2067 4
SH-InGaAs 23x23 600 1500 NIR
SH-InGaAs-fast 23x23 3020 300


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