ALPAO Hi-Speed DMs are based on continuous reflective surface motioned by magnetics actuators. They feature large strokes, linearity and fast settling time to meet and exceed your requirements for fast, accurate wavefront correction.
  

KEY FEATURES:

• Large deformation:
Up to 60 μm optical deformation (peak to valley): to correct large amplitude aberrations.  
Up to 3.0 μm optical deformation (inter actuator): to correct high spatial-frequency aberrations.  
 
High dynamic motion: 
Settling time as low as 0.7 ms within +/-5%.  
 
Excellent linearity and low hysteresis: 
Non linearity error < 3%

Deformable mirror logo
Hi-Speed deformable mirror

DEFORMABLE MIRRORS (DM)

1.5
DM
69

DM
88

DM
97-08

DM
97-15

DM
241

DM
820*

Pitch (mm)
2.5
0.8
69
Number of actuators
88
97
97
241
277
10.5
Pupil diameter (mm)
20.0
7.2
13.5
37.5
24.5
60 µm
Wavefront tip/tilt stroke (PtV)
15 µm
80 µm
Wavefront inter-actuator stroke
> 25
Wavefront 3x3 stroke (µm PtV)
> 25
7.0 nm
Mirror best flat (RMS) (1)
Bandwidth (Hz) (2)
Typical AO loop frame rate (kHz)
1.0
Settling time (ms at +/-5%)
< 1%
Hysteresis error
< 3%
Non-linearity error
Protected Silver
Coating (3)
10 to 35 °C
Operating temperature (4)
2.0
1.0
*  Preliminary specifications 
(1)  in close loop
(2)  first resonance of the membrane (higher bandwidth available upon request)
(3)  other coating available
(4)  for CE marking, compatible with cryogenics environment
35 µm
60 µm
 > 3.0 µm PtV
DM
277

DM
468*

468
820
33.0
45.0
1.5
2.5
1.5
25 µm
> 15
> 10
2.0
0.7
> 750
> 400
> 750
> 400
> 2000
< 7.5
< 4.0
< 7.5
< 4.0
< 10.0
ALPAO: Deformable mirror and adaptive optics systems.