ALPAO DM | High speed deformable mirrors

Description

ALPAO DMs are high speed deformable mirrors featuring large stroke, high dynamic motion and an excellent optical quality. ALPAO DMs are providing state-of-the-art performances which will meet and exceed your requirements for fast and accurate wavefront corrections.

Using high speed deformable mirrors, you can correct large aberrations and shape wavefronts with high precision, including high-order Zernike modes.
Such large amplitudes of deformation allow to use adaptive optics as never before. You can, for example, skip the separate tip-tilt mirror (astronomy), use the large defocus capability for fast z-scan (microscopy) or correct large eye-aberrations (ophthalmology).

ALPAO DMs are based on continuous reflective surface motioned by magnetic actuators.

Key Features

• Large deformation: up to 90µm PV tip-tilt
• High dynamic motion: settling time as low as 400µs at +/-10%
• Excellent optical quality: active best flat <7nm RMS (<3nm RMS optional)
• Almost no hysteresis: <2%
• High linearity: >97%
• Stability: <10nm RMS in open loop over hours

Adaptive Optics Loop

These high speed deformable mirrors are fully compatible with Wavetune AO software and therefore can be used in an adaptive optics loop with any HASO wavefront sensor.

Additional DMs typical features and benefits:

• Operating temperature: -50/35°C
•  Protected Silver coating (other coatings available)
• Vacuum compatibility
• Sub-nm resolution
• No protective glass
• Surface roughness <15Å RMS
• LIDT for protected silver coating2: 880mJ/cm2 (@12ns,10Hz, 1064nm) / 50W (CW @ 1064nm)
• MTBF: 1011 cycles
•  Square grid-pattern except for large size DM (hexagonal pattern)

For more deformable mirrors, visit our deformable mirror page here.