Ultracompact x-ray dosimeter based on scintillators coupled to a nano-optical antenna.

  title={Ultracompact x-ray dosimeter based on scintillators coupled to a nano-optical antenna.},
  author={Zhihua Xie and Hichem Maradj and Miguel Angel Suarez and Lydie Viau and Virginie Moutarlier and Claudine Fili{\^a}tre and Carole Fauquet and Didier Tonneau and Thierry Grosjean},
  journal={Optics letters},
  volume={42 7},
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… 

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