Séminaire de Karl Fleury-Frenette au LATMOS (Salle 2202, Guyancourt), Vendredi 28 novembre 2014, 11h

Orateur Karl Fleury-Frenette (Centre Spatial de Liège, Belgique)

Titre: New Monolithic High Solar Rejection EUV Transmission Filter

Abstract: A new high solar rejection transmission filter for the extreme UV has been developed for the Solar Orbiter Extreme Ultraviolet Imager (EUI). To provide enhanced resilience to high thermal load, a monolithic architecture approach has been taken in order to limit the thermal contact resistance between the filtering sub-micron thin film, its supporting mesh, and holding frame. Some aspects of the manufacturing process involving thin film deposition and photolithography will be presented along with optical performance and space environmental test results. New avenues for improving the thermo-optical properties of the filter will also be discussed.