期刊
OPTICAL MATERIALS EXPRESS
卷 10, 期 8, 页码 1862-1880出版社
OPTICAL SOC AMER
DOI: 10.1364/OME.397720
关键词
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资金
- National Science Foundation [ECCS-1202443]
- Office of Naval Research [N00014-15-1-2684]
Metamaterials and plasmonics potentially offer an ultimate control of light to enable a rich number of non-conventional devices and a testbed for many novel physical phenomena. However, optical loss in metamaterials and plasmonics is a fundamental challenge rendering many conceived applications not viable in practical settings. Many approaches have been proposed so far to mitigate losses, including geometric tailoring, active gain media, nonlinear effects, metasurfaces, dielectrics, and 2D materials. Here, we review recent efforts on the less explored and unique territory of virtual gain as an alternative approach to combat optical losses. We define the virtual gain as the result of any extrinsic amplification mechanism in a medium. Our aim is to accentuate virtual gain not only as a promising candidate to address the material challenge, but also as a design concept with broader impacts. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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