Laser Interferometry for Broad Area SPR-Grating Couplers in Chemical Applications
Mauricio Moreno-Sereno,
Noemi Pérez,
Guillem Domenech-Gil,
Laura Parellada-Monreal,
Miguel Martínez-Calderón,
Mikel Gómez-Aranzadi,
Nasser Darwish,
Gemma G. Mandayo,
Albert Romano-Rodriguez
Affiliations
Mauricio Moreno-Sereno
Institute of Nanoscience and Nanotechnology (IN2UB), Universitat de Barcelona (UB), c/Martí i Franquès 1, E-08028 Barcelona, Spain
Noemi Pérez
Department of Electrical, Electronic and Automatic Engineering, Universidad de Navarra, Tecnun, P° de Manuel Lardizabal 13, 20018 Donostia-San Sebastián. Gipuzkoa, Spain
Guillem Domenech-Gil
Institute of Nanoscience and Nanotechnology (IN2UB), Universitat de Barcelona (UB), c/Martí i Franquès 1, E-08028 Barcelona, Spain
Laura Parellada-Monreal
Department of Transport and Energy, Ceit and Tecnun, Universidad de Navarra, P° de Manuel Lardizabal 13, 20018 Donostia-San Sebastián. Gipuzkoa, Spain
Miguel Martínez-Calderón
Department of Transport and Energy, Ceit and Tecnun, Universidad de Navarra, P° de Manuel Lardizabal 13, 20018 Donostia-San Sebastián. Gipuzkoa, Spain
Mikel Gómez-Aranzadi
Department of Transport and Energy, Ceit and Tecnun, Universidad de Navarra, P° de Manuel Lardizabal 13, 20018 Donostia-San Sebastián. Gipuzkoa, Spain
Nasser Darwish
Institute of Nanoscience and Nanotechnology (IN2UB), Universitat de Barcelona (UB), c/Martí i Franquès 1, E-08028 Barcelona, Spain
Gemma G. Mandayo
Department of Transport and Energy, Ceit and Tecnun, Universidad de Navarra, P° de Manuel Lardizabal 13, 20018 Donostia-San Sebastián. Gipuzkoa, Spain
Albert Romano-Rodriguez
Institute of Nanoscience and Nanotechnology (IN2UB), Universitat de Barcelona (UB), c/Martí i Franquès 1, E-08028 Barcelona, Spain
In this work, the fabrication of a SPR (Surface Plasmon Resonance)-grating coupler using Laser Interference Lithography (LIL) has been investigated, giving rise to large area diffraction gratings on a 100 nm-thick gold film. The period of the diffraction grating is Λ = 500 nm. The SPR sensor has been tested towards several liquids showing a maximum sensitivity of S = 390 nm/RIU.
