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Deformable Mirrors

Photonics.com
May 2010
Edmund Optics Inc.Request Info
 
BARRINGTON, N.J., May 10, 2010 — Edmund Optics has released high-performance deformable mirrors that correct optical aberrations through wavefront manipulation and control, introducing differences in the optical path length across the entire wavefront.

The mirrors can be integrated via a Gig-E connection and a dedicated Ethernet card into a polarization beamsplitter-based Twyman-Green interferometer.

Replacing the traditional test surface with a deformable mirror better illustrates the deformations of the mirror's surface. These small changes in the surface of the mirror create variations in the interferogram. Additionally, this setup highlights how optical noise can be reduced by simply reducing the amount of backreflections in the system.

Suitable for use in adaptive optics applications, the mirrors are good tools for use in combination with wavefront sensors and real-time control systems. They have 32 radially packed actuators that control the shape of the silver-coated precision cellulose membrane. They have a 10-mm active area and offer 15 µm of actuator max stroke. They are suited for tabletop applications as well as OEM integration.

Each embedded system comes with the 32-actuator deformable mirror, 32-channel drive electronics and a software package that integrates a pre-tested influence matrix specific to that mirror.

The company offers a 64-channel embedded high-voltage driver. The drive electronics are fully programmable and are supplied with embedded hardware for adaptive optics. An integrated Intel Atom chip-based PC features 1 GB of solid-state memory.


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GLOSSARY
adaptive optics
Optical components or assemblies whose performance is monitored and controlled so as to compensate for aberrations, static or dynamic perturbations such as thermal, mechanical and acoustical disturbances, or to adapt to changing conditions, needs or missions. The most familiar example is the "rubber mirror,'' whose surface shape, and thus reflective qualities, can be controlled by electromechanical means. See also active optics; phase conjugation.
Twyman-Green interferometer
A testing device that provides a contour map of the emergent wavefront for the observer in terms of the given wavelength of the light.  
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