ALPAO变形镜采用磁电驱动，面形高速连续可变。变形量大，线性度好，适用于快速精准波前控制领域。
主要特点：
● 全口径波前最大变形量: 60 μm PV，可修正大尺度波前畸变
● 相邻驱动单元间波前型变量: 3 μm，可修正高空间频率波前畸变
● 速度快: 设置时间可达 0.7 ms within ±5%.
● 线性度高: >97%
规格指标：
DM69 | DM88 | DM97-08 | DM97-15 | DM241 | DM277 | DM468 | DM820 | |
Number of actuators | 69 | 88 | 97 | 97 | 241 | 277 | 468 | 820 |
Pupil diameter (mm) | 10.5 | 20.0 | 7.2 | 13.5 | 37.5 | 24.5 | 33.0 | 45.0 |
Pitch (mm) | 1.5 | 2.5 | 0.8 | 1.5 | 2.5 | 1.5 | 1.5 | 1.5 |
Mirror best flat (RMS)(1) | 7.0 nm | |||||||
Wavefront tip/tilt stroke (μm PV) | 60 | 35 | 80 | 60 | 25 | 15 | 15 | 15 |
Wavefront inter-actuator stroke | > 3.0 μm PV | |||||||
Wavefront 3×3 stroke (μm PV) | > 25 | > 15 | > 25 | > 25 | > 25 | > 10 | > 10 | > 10 |
Setting time (ms @±5%) | 1.0 | 2.0 | 2.0 | 1.0 | 2.0 | 0.7 | 0.7 | 0.7 |
Bandwidth (Hz)(2) | > 750 | > 400 | > 400 | > 750 | > 400 | > 2000 | > 2000 | > 2000 |
Typical AO loop frame rate (kHz) | <7.5 | <4.0 | <4.0 | <7.5 | <4.0 | <10.0 | <10.0 | <10.0 |
Hysteresis error | < 1% | |||||||
Non-linearity error | < 3% | |||||||
Coating(3) | Protected Silver | |||||||
Operating temperature(4) | 10~35°C | |||||||
