Deformable Mirror DM3228
Deformable mirrors, also called wavefront correctors, mainly serve adaptive optics. They alter incident phase by changing optical path length or the transmission medium's refractive index to correct wavefront phase. Many independently controlled elements reshape the surface under applied voltage to correct wavefront errors, making them essential adaptive optics components. ALPAO of France uses electromagnetic actuation: energized voice coils move magnets attached to a mirror membrane to change its shape. ALPAO has over 10 years of adaptive optics experience. The source cites applications including multi-object adaptive optics (MOAO) on the 8.2-meter Subaru telescope, zebrafish brain imaging in the Betzig laboratory associated with the 2014 Nobel Prize, and the 39-meter E-ELT. One mirror supplied for E-ELT has 12000 elements.
Overview
Specifications
| Parameter | Value |
|---|---|
| Number of Actuators | 3228 |
| Aperture Diameter | 93 mm |
| Actuator Spacing | 1.5 mm |
| Best Closed-Loop Flatness (RMS, nm), Mechanical Displacement | 7 nm |
| Tilt Deformation (PV, μm), Wavefront Displacement | 10 μm |
| Settling Time (Within +/-10% of Steady Value, ms) | 0.5 ms |
| Mirror First Resonant Frequency | 1200 Hz |
Key Features
Datasheet
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