title: Wavefront correction with a 37-actuator ferrofluid deformable mirror.
abstract: This paper discusses an innovative low-cost deformable mirror made of a magnetic liquid (ferrofluid) whose surface is actuated by an hexagonal array of small current carrying coils. Predicted and experimental performances of a 37-actuator ferrofluid deformable mirror are presented along with wavefront correction examples. We show the validity of the model used to compute the actuators currents to obtain a desired wavefront shape. We demonstrate that the ferrofluid deformable mirror can correct a 11 microm low order aberrated wavefront to a residual RMS error of 0.05 microm corresponding to a Strehl ratio of 0.82.
authors: Département de physique, génie physique et optique and Centre d'Optique Photonique et Laser (COPL), UniversitéLaval, Québec, Québec, Canada. denis.brousseau.1@ulaval.ca
authors: Denis
authors: D
authors: Brousseau
authors: Ermanno F
authors: EF
authors: Borra
authors: Simon
authors: S
authors: Thibault
mesh_terms: D055119:Elastic Modulus; D007089:Image Enhancement / Q000295:instrumentation*; D007909:Lenses; D008280:Magnetics / Q000295:instrumentation*; D044085:Microfluidics / Q000295:instrumentation*; D012996:Solutions
chemical_list: D012996:Solutions