Linearization of the response of a 91-actuator magnetic liquid deformable mirror.

Brousseau, Denis; Borra, Ermanno F; Rochette, Maxime; Landry, Daniel Bouffard

Brousseau, Denis; Borra, Ermanno F; Rochette, Maxime; Landry, Daniel Bouffard.

Afiliación

Brousseau D; Département de physique, de génie physique et d'optique and Centre d'optique, photonique et laser (COPL), Université Laval, 2375 rue de la Terrasse, Québec, Québec,G1V 0A6 Canada. denis.brousseau@copl.ulaval.ca

Opt Express ; 18(8): 8239-50, 2010 Apr 12.

Article en En | MEDLINE | ID: mdl-20588670

RESUMEN

We present the experimental performance of a 91-actuator deformable mirror made of a magnetic liquid (ferrofluid) using a new technique that linearizes the response of the mirror by superposing a uniform magnetic field to the one produced by the actuators. We demonstrate linear driving of the mirror using influence functions, measured with a Fizeau interferometer, by producing the first 36 Zernikes polynomials. Based on our measurements, we predict achievable mean PV wavefront amplitudes of up to 30 microm having RMS residuals of lambda/10 at 632.8 nm. Linear combination of Zernikes and over-time repeatability are also demonstrated.

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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Opt Express Asunto de la revista: OFTALMOLOGIA Año: 2010 Tipo del documento: Article Pais de publicación: Estados Unidos

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