Low-Speed deformable mirrors : Entry-level for R&D in astronomy

The Low Speed Deformable Mirror Series consists of 2 deformable mirrors (52 and 88 actuators). This range has been designed to start off research and development activities in astronomy. In addition, it is possible to use these mirrors as generators of aberrations or as woofers in a woofer/tweeter configuration.

The Low Speed DM52-25 is the smallest deformable mirror. A continuous membrane (15.0mm useful pupil diameter) is deformed by 52 miniaturized voice-coil actuators. As there is no contact between the membrane and the coil array, large deformations are possible without degrading the optical quality (50µm peak-to-valley stroke).

See the datasheet for more information. Special designs based on the off-the-shelf Low Speed DM are available on request.

(1) In closed loop

(2) First resonance of the membrane

(3) Metallic coatings available (silver, aluminium, gold, etc.)

(4) A low-temperature version (-40°C) is also available

The figure here after shows the typical wavefront Zernike mode achievable (peak-to-valley wavefront amplitude) with the Low Speed DM88-25.

The figure here after shows the typical wavefront Zernike mode achievable (peak-to-valley wavefront amplitude) with the Low Speed DM52-25.

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