Metasurface optical antireflection coating
Light reflection at the boundary of two different media is one of the fundamental phenomena in optics, and reduction of reflection is highly desirable in many optical systems. Traditionally, optical antireflection has been accomplished using single- or multiple-layer dielectric films and graded index surface structures in various wavelength ranges. However, these approaches either impose strict requirements on the refractive index matching and film thickness, or involve complicated fabrication processes and non-planar surfaces that are challenging for device integration. Here, we demonstrate an antireflection coating strategy, both experimentally and numerically, by using metasurfaces with designer optical properties in the mid-wave infrared. Our results show that the metasurface antireflection is capable of eliminating reflection and enhancing transmission over a broad spectral band and a wide incidence angle range. In conclusion, the demonstrated antireflection technique has no requirement on the choice of materials and is scalable to other wavelengths.
- Univ. of Alabama, Huntsville, AL (United States). Department of Electrical and Computer Engineering.
- Air Force Research Lab., Wright Patterson Air Force Base, OH (United States)
- Air Force Research Lab., Wright Patterson Air Force Base, OH (United States); Solid State Scientific Corporation, Nashua, New Hampshire (United States)
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States). Center for Integrated Nanotechnologies.
- Publication Date:
- OSTI Identifier:
- Report Number(s):
Journal ID: ISSN 0003-6951; APPLAB
- Grant/Contract Number:
- NSF-1158862; 12RY05COR; AC52-06NA25396; NSF1158862
- Accepted Manuscript
- Journal Name:
- Applied Physics Letters
- Additional Journal Information:
- Journal Volume: 105; Journal Issue: 24; Journal ID: ISSN 0003-6951
- American Institute of Physics (AIP)
- Research Org:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Sponsoring Org:
- USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
- Country of Publication:
- United States
- 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; antireflective coatings; germanium; dielectric thin films; gold; polarization; 36 MATERIALS SCIENCE; 77 NANOSCIENCE AND NANOTECHNOLOGY; metasurfaces; mid-infrared; antireflection
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