Title
Advances of TNO's electromagnetic deformable mirror development
Author
Kuiper, S.
Doelman, N.J.
Human, J.D.
Saathof, R.
Klop, W.A.
Maniscalco, M.P.
Contributor
Geyl, R. (editor)
Navarro, R. (editor)
Publication year
2018
Abstract
TNO is developing Deformable Mirror (DM) technology, targeted for aberration correction in high-end Adaptive Optics (AO) applications in the field of lithography, astronomy, space and laser communication. The heart of this deformable mirror technology is a unique actuator technology based on the variable reluctance principle. The main advantages of this technology are the inherent high reliability, linearity (>99%), and high efficiency in terms of force per volume and unit power. Based on this actuator technology TNO built and tested a prototype DM, with 57 actuators, and a mirror diameter of Ø160mm. The test results show a highly linear actuator response, with less than 1% hysteresis over a stroke of 40μm. Atmospheric aberration correction has been shown with these DM's in a free space laser-communication bread board. The same actuator technology is also used in the application of a highly compact Fine Steering Mirror (FSM), with an overall volume of Ø27x30mm, with a Ø20mm mirror. This FSM is targeted for satellite-based lasercommunication terminals. Furthermore, a design study has been carried out to show the scalability of this technology towards large (~Ø1m to ~Ø3m) adaptive (secondary) mirrors with several hundreds, up to thousands of actuators. In this paper these different DM and FSM's are discussed, and the latest test results obtained with the DM prototypes are presented.
Subject
High Tech Systems & Materials
Electronics
Industrial Innovation
Adaptive optics
Adaptive secondary
Fine steering mirrors
Linear actuators
Deformation
Delta modulation
Laser applications
Laser mirrors
Telescopes
Aberration correction
Actuator technology
Atmospheric aberration
Deformable mirrors
Free space laser communications
Variable reluctance
To reference this document use:
http://resolver.tudelft.nl/uuid:b7abe812-796c-406e-800a-a0ccadfa7e03
TNO identifier
842690
Publisher
SPIE
ISBN
9781510619654
ISSN
0277-786X
Source
Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation III 2018, 10-15 June 2018, 10706
Article number
1070619
Document type
conference paper