Live-mirror shape correction technology operated through modified electroactive polymer actuators

Kritsadi Thetpraphi (1) , Gil Moretto (2) , Jeff R. Kuhn (3) , Lionel Petit (1) , David Audigier (1) , Jean-Fabien Capsal (1) , Pierre-Jean Cottinet (1) , Minh-Quyen Le (1)

1 LGEF - Laboratoire de Génie Electrique et Ferroélectricité
2 CRAL - Centre de Recherche Astrophysique de Lyon
3 Institute for Astronomy [Honolulu]

The novelty of correcting optical mirrors surface in a few microns of the desired precisely-shaped are supported by electroactive polymer actuating/sensing devices. The P(VDF-TrFE-CFE) terpolymer with the 10 % DINP plasticizer has field as EAP which showed 10 times higher in longitudinal strain with respect to the neat one and the increase of total axial strain from 0.4 % - 3.0 % with the multilayer sample 1 to 8 layers respectively. The actuator stack was integrated to the mirror in order to prove the concept of adaptive mirror which is able to reach to goal of a few micron mirror deformation. © (2019) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.

Domaines: Sciences de l'ingénieur [physics]

Kritsadi Thetpraphi, Gil Moretto, Jeff R. Kuhn, Lionel Petit, David Audigier, et al.. Live-mirror shape correction technology operated through modified electroactive polymer actuators. Electroactive Polymer Actuators and Devices (EAPAD) XXI, Mar 2019, Denver, United States. pp.87, ⟨10.1117/12.2514229⟩. ⟨hal-02177770⟩