527 20160222141717.0 SIDCimport-607 Soltani, A. 2014 Dispersion properties and low infrared optical losses in epitaxial AlN on sapphire substrate in the visible and infrared range STCE Stolz, A. Charrier, J. Mattalah, M. Gerbedoen, J-C Barkad, H.A Mortet, V. Rousseau, M Bourzgui, N. BenMoussa, A. De Jaeger, J-C. Journal of Applied Physics 115 2014 163515 http://scitation.aip.org/content/aip/journal/jap/115/16/10.1063/1.4873236 published in REFERD