Deformable curvature and beam scanning with an elastomeric concave grating actuated by a shape memory alloy

Applied Optics
Raphael A GuerreroJose Ramon A Batiller

Abstract

A concave diffraction grating with a tunable radius of curvature R is fabricated by embedding a nitinol wire within an elastomeric grating replica. Curvature of the grating is controlled via the shape memory effect, where strain in the wire is recovered due to martensite-austenite phase transformations induced by resistive heating. The generated force bends the grating into a variable curvature determined by applied current. The radius of curvature for the concave grating is variable from 170 to 44 mm over a current range of 0 to 2.5 A. Actuation of R redirects the grating normal, resulting in a scanning motion of the diffracted beam.

References

Jul 21, 2004·Journal of the Optical Society of America. A, Optics, Image Science, and Vision·Zhimin ShiSailing He
Aug 12, 2006·Optics Letters·Manuel Aschwanden, Andreas Stemmer
Apr 1, 1983·Applied Optics·Y Fujii, J Minowa

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Citations

Jan 3, 2013·The Review of Scientific Instruments·S BonoraL Poletto
Dec 3, 2017·The Review of Scientific Instruments·Marco A C PotenzaPaolo Milani
Feb 8, 2013·Optics Express·Peter Reader-HarrisAndrea Di Falco
Dec 23, 2017·Journal of Synchrotron Radiation·Luca Poletto, Fabio Frassetto
Jun 6, 2013·Optics Express·Fabio FrassettoLuca Poletto
Aug 22, 2012·Applied Optics·Raphael A GuerreroJohanna Mae M Indias

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