title: Ultracompact x-ray dosimeter based on scintillators coupled to a nano-optical antenna.
abstract: We show that nano-optical antennas are capable of controlling the luminescence induced by the absorption of x rays into matter. The x-ray-excited luminescence from a tiny scintillation cluster coupled to a horn nano-optical antenna is highly directed and determined by the antenna's geometrical parameters. Directionality is sufficiently high to efficiently outcouple the x-ray-excited luminescence to a narrow single-mode optical fiber, thus enabling ultracompact fiber-integrated x-ray sensors. Our nano-optically driven approach offers the possibility of x-ray profiling and dosimetry in ultra-confined environments, opening up new avenues in the fields of x-ray imaging, as well as medical and industrial endoscopy. With this study, to the best of our knowledge, nano-optical antennas make a first key contribution to the development of x-ray sensing protocols and architectures.
authors.forename: Zhihua
authors.initials: Z
authors.lastname: Xie
authors.forename: Hichem
authors.initials: H
authors.lastname: Maradj
authors.forename: Miguel-Angel
authors.initials: MA
authors.lastname: Suarez
authors.forename: Lydie
authors.initials: L
authors.lastname: Viau
authors.forename: Virginie
authors.initials: V
authors.lastname: Moutarlier
authors.forename: Claudine
authors.initials: C
authors.lastname: Filiatre
authors.forename: Carole
authors.initials: C
authors.lastname: Fauquet
authors.forename: Didier
authors.initials: D
authors.lastname: Tonneau
authors.forename: Thierry
authors.initials: T
authors.lastname: Grosjean