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Broadband light funneling in ultrasubwavelength channels having periodic connected unfilled apertures

United States Patent

9,720,151
August 1, 2017
View the Complete Patent at the US Patent & Trademark Office
Sandia National Laboratories - Visit the Intellectual Property Management and Licensing Website
A structure for broadband light funneling comprises a two-dimensional periodic array of connected ultrasubwavelength apertures, each aperture comprising a large sub-aperture that aids in the coupling of the incoming incident light and a small sub-aperture that funnels a significant fraction of the incident light power. The structure possesses all the capabilities of prior extraordinary optical transmission platforms, yet operates nonresonantly on a distinctly different mechanism. The structure demonstrates efficient ultrabroadband funneling of optical power confined in an area as small as .about.(.lamda./500).sup.2, where optical fields are enhanced, thus exhibiting functional possibilities beyond resonant platforms.
Subramania; Ganapathi Subramanian (Albuquerque, NM), Brener; Igal (Albuquerque, NM), Foteinopoulou; Stavroula (Albuquerque, NM)
National Technology & Engineering Solutions of Sandia, LLC (Albuquerque, NM), University of Exeter (Exeter, Devon, GB)
14/ 048,665
October 8, 2013
STATEMENT OF GOVERNMENT INTEREST This invention was made with Government support under contract no. DE-AC04-94AL85000 awarded by the U. S. Department of Energy to Sandia Corporation. The Government has certain rights in the invention.