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10 March 2020 Epsilon-near-zero metamaterials realized using metal-dielectric stacks as a potential candidate for nonlinear applications at visible wavelength (Conference Presentation)
Sisira Suresh, Orad Reshef, M. Zahirul Alam, Jeremy Upham, Mohammad Karimi, Robert Boyd
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Proceedings Volume 11278, Ultrafast Phenomena and Nanophotonics XXIV; 1127808 (2020) https://doi.org/10.1117/12.2543805
Event: SPIE OPTO, 2020, San Francisco, California, United States
Abstract
In this work, we demonstrated that metamaterials composed of alternating silver and silica layers of subwavelength thickness can act as an effective epsilon-near-zero (ENZ) medium. This ENZ condition is accessible to wide spectral tunability in the entire visible spectrum by adjusting the respective dimensions of constituent metal and dielectric. We also observed a pronounced enhancement of nonlinear response at the ENZ region. The capability to obtain large nonlinearities at pre-assigned optical wavelengths makes this class of metamaterials a flexible platform for nonlinear applications in the visible spectrum.
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Sisira Suresh, Orad Reshef, M. Zahirul Alam, Jeremy Upham, Mohammad Karimi, and Robert Boyd "Epsilon-near-zero metamaterials realized using metal-dielectric stacks as a potential candidate for nonlinear applications at visible wavelength (Conference Presentation)", Proc. SPIE 11278, Ultrafast Phenomena and Nanophotonics XXIV, 1127808 (10 March 2020); https://doi.org/10.1117/12.2543805
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KEYWORDS
Metamaterials
Dielectrics
Metals
Nonlinear optics
Silica
Silver
Visible radiation
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