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

• Main Authors: Guerrero, Raphael A, Sze, Michelle Wynne C, Batiller, Jose Ramon A
• Format: text
• Published: Archīum Ateneo 2010
• Subjects: Optics; Physics
• Online Access: https://archium.ateneo.edu/physics-faculty-pubs/55; https://www.osapublishing.org/ao/abstract.cfm?uri=ao-49-19-3634
• Institution: Ateneo De Manila University

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 transformati...