美国Iris公司是美国第一家对变形镜进行精密全校准的公司，他们的镜面分段式变形镜基于MEMS技术。
产品特点
电极呈六变形分布可实时并独立控制三个自由度的波前像差（piston, tip, and tilt）
无迟滞效应
PTT系列分段式变形镜具有极高的抗损伤阈值，可应用于高能量的脉冲激光（采用介质薄膜，独特的应力补偿方法）的校正
PTT系列分段式变形镜可适应大范围的工作温度。
实测结果
CW 连续激光(532nm)：2800 W/cm2
No signs of damage after exposure to a w0=25 μm beam with a power density of 205 kW/cm2 for 105 minutes at the center of a segment and at segment edges exposed to 180 kW/cm2 for 45 minutes.
脉冲激光：
355 nm: 130 MW/cm2, 2 mJ/cm2 peak fluence, 15 ps, 50 μm diameter straddling segment gap
1540 nm: ~75 MW/cm2, 4.2 mJ, 7 ns, 1 mm diameter, 1540 nm
应用
典型的应用波长：355, 532, 589, 1064, and 1540nm
波前校正
激光光束整形、控制与操纵
天文、显微、全息、遥感
拼接式望远镜的检测，已应用于James Webb Space Telescope（詹姆斯·韦伯空间望远镜）和Keck telescope（凯克望远镜）的检测
产品规格
|
产品型号 |
口径 |
控制电极数 |
校正量 |
|
PTT111 |
3.5 mm |
111 |
5, 8 μm |
|
PTT111L |
7.0 mm |
111 |
5, 8 μm |
|
PTT183 |
<7.0 mm |
183 |
5μm |
|
PTT255 |
<7.0 mm |
255 |
5μm |
|
PTT363 |
<7.0 mm |
363 |
5μm |
|
PTT489 |
7.7 mm |
489 |
5, 8 μm |
Precision mirror shapes - No interactuator coupling (镜面整形-无驱动电极耦合效应)
5 µm or 8 µm 校正量
3.5 mm to 7.7 mm 口径
6 kHz 校正频率
大的工作温度范围
软件开发包 for C++ and Matlab
控制器接口性能
• Simple USB interface: 140 Hz (~7 μs latency)
• High-speed interface: <165 μs latency
> 6 kHz synchronous mode
>10 kHz asynchronous mode
> 14 kHz pre-recorded mode
Frame rates of 35 kHz possible
f-3dB ≥ 30 kHz
DM Specifications
|
Maximum Dynamic Range (Stroke) |
5, 8 μm mechanical |
|
Maximum Segment Angle |
4, 7 mrad |
|
Mechanical Response |
< 200 μs |
|
Segment Positioning Resolution |
< 2 nm |
|
Optical Coatings |
|
|
Metal |
Protected-Silver,
Gold, Protected-Aluminum |
|
Dielectric: Demonstrated |
λ = 355, 532, 589, 1064, 1540 nm |
|
Dielectric: Possible |
188-1600 nm |
|
Segment Flatness |
|
|
Metal Coating |
< 20 nm rms, <7 nm rms (optional) |
|
Dielectric Coating |
< λ/20 rms, < λ/40 rms (optional) |
|
Maximum Operating Temperature |
80°C |
AO System Specifications
|
Deformable Mirror Type |
PTT111 |
PTT489 |
|
Software Interface |
GUI, Console |
Console |
|
Wavefront Sensor Type |
Shack Hartman |
|
Wavefront Sensor Lenslets |
37 (1 per segment) |
163 (1 per segment) |
|
Optical Magnification |
1:1 |
2:1 |
|
Camera Sample Rate |
30 Hz, 60 Hz |
|
Camera Dynamic Range |
10 bit, 12 bit |
|
Wavefront Resolution |
<15 nm rms |
<15 nm rms |
|
Wavefront Dynamic Range |
± 14 mrad |
± 20 mrad |
|
AO Controller |
Zernike-based modal |
重点客户清单
|
客户名称 |
产品型号 |
数量 |
时间 |
备注 |
|
中科院南京天文光学技术研究所 |
PTT111-5 |
1 |
2014 |
|