Fraunhofer Institute of Optronics, System Technologies and Image Exploitation IOSB

Adaptive Optics Laboratory

Adaptive Optics Laboratory

Our adaptive optics laboratory is equipped with state-of-the art devices for simulating, measuring and compensation of atmospheric turbulence. The following table gives an overview of the most important equipment we possess.

 

Device

Company

Main Characteristics

Deformable mirror “Multi DM”

Boston Micromachines

12x12 actuators, 4.6 kHz frame rate, 3.5 µm, Gold Coating

Deformable mirror “Mini DM”

Boston Micromachines

32 actuators, 20 kHz frame rate, 1.5 µm, Gold coating

Deformable mirror “DM-52”

Alpao

52 actuators, 800 Hz frame rate, 3 µm inter-actuator stroke

Arbitrary Waveform Generator

Tektronix

2−channel, 25 Gsamples per second, 2G samples record

Digital Oscilloscope

Tektronix

4 analog channels, 23 GHz Bandwidth

90-degree Optical Hybrid

Kylia

Two polarizations, 1520-1570 nm operating wavelength

IQ Optical Modulator

Thorlabs

Dual Mach-Zehnder interferometer, 35 GHz Bandwidth, 1525 - 1605 nm operating wavelength

High-frequency RF amplifier

Thorlabs

10 GHz bandwidth, 34 dB gain, max. output voltage 10 V.

Mode spatial multiplexer / demultiplexer

CAILabs

6 Laguerre-Gauss modes modes, 1550 nm operating wavelength, output in free space.

Fiber Laser

NKT Photonics

1550.12 nm wavelength, 100 mW

HeNe-Laser

several

Several from 5 mW to 35 mW, TEM00

4 Diodelaser with beam combiner (fiber-coupled)

Schäfter & Kirchhoff

4 combined laser with 405 nm, 488 nm, 520 nm and 660 nm, fiber-coupled

2x Balanced Photodetector

Finisar

43 GHz Bandwidth, FC/PC connector, 0.5 A/W responsivity

Silicon photo multiplier array

SensL

VIS, array of 8x8, pixel size 6mmx6mm

IR Camera

Edmund Optics

1500-1600 nm, 320 x 256 resolution, 30 x 30 µm2 Pixels, USB

Phosphor coated IR Camera

Ophir photonics

964x724 pixels, USB 2.0

CMOS detector “Osprey Scientific”

Raptor Photonics

VIS, 2048x2048 pixels, Camera link, 37.5 to 1000 fps

CCD detector “Fastcam”

Photron

VIS, 512x480 pixels, frame grabber, up to 10.000 fps

Shack-Hartmann sensor

Optocraft

1248x1080 pixels, exchangeable lenslet-arrays

Shack-Hartmann sensor “WFS20-7”

Thorlabs

1440x1080 Pixels, 150 µm Pitch, 69-880 fps

Shack-Hartmann sensor

Metrolux

1380x1040 pixels, 200 µm Pitch, 15 fps

2 x Liquid Crystal Spatial Light Modulator

Hamamatsu

1000-1550nm spectral range, 1280x1020 pixels, 60 Hz frame rate, DVI input signal

Liquid Crystal Spatial Light Modulator “Pluto”

Holoeye

VIS, 1920x1080 pixels, 60 Hz frame rate, DVI input signal

Turbulence simulator

Lexitek

2x motorized phase plates with 4096 x 4096 OPD array

Tip/Tilt mirror

NanoFaktur

2 axis, 4 mrad max. deplexion, 1.5 kHz bandwith, 0.2 µrad resolution.

Active beam stabilization

MRC Systems

2 Tilt mirrors, 2 4QD sensors

Real-time embedded processor

National Instruments

Artix-7-FPGA, Dual-Core-Controller with 4 Slots

Interferometer “µPhase 2 HR”

Fisba Optik

1000x1000 image points

Telescope “CGEM DX 925 HD“

Celestron

Aperture 235 mm, focal length 2032 mm

Telescope “CPC 800 XLT“

Celestron

Aperture 2350 mm, focal length 2032 mm

Ultrasonic Anemometer „HS50“                           

Gill Instruments

measurement frequency 50 Hz, asymmetric, 3-axis, 0-45 m/s wind speed, U,v,w vector output, minimal flow disturbance, speed of sound measurements

Surface-layer Laser- Scintillometer „SLS40”

SCINTEC AG

670 nm wave length, Cn², CT², inner scale, heat flux, time resolution 1 min, range 50-250 m

Boundary Layer Scintillometer BLS2000              

SCINTEC AG

Large aperture scintillometer, 880 nm, dual disk, range 500 m- 12km, 1756 VIS LEDs, 68 IR LEDs, crosswind, Ethernet