Nano-Thin 2D Axicon Generating Nondiffracting Surface Waves

Kim, Myun-SikDubey, RichaBarakat, ElsieHerzig, Hans Peter2017-01-242017-01-242017-01-24201610.1109/OMN.2016.7565823https://infoscience.epfl.ch/handle/20.500.14299/133291WOS:000389586300012We investigate nondiffracting surface waves. On top of the Bloch surface wave platform, a 60-nm-thick TiO2 isosceles triangle serves as a 2D axicon. Scanning near-field microscopy measurements verify nondiffracting surface beam properties.Bloch surface wave (BSW)non-diffracting beamBessel beamaxicon lensscanning near-field microscopy (SNOM)Nano-Thin 2D Axicon Generating Nondiffracting Surface Wavestext::conference output::conference proceedings::conference paper