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physics.optics2018
Multi-refractive-index metamaterials based on subwavelength waveguide arrays
Zhaoning Yu, Chenghao Wan, Jad Salman +4
We demonstrate a metamaterial that cannot be described by a single set of refractive-index and impedance values, even for fixed frequency and polarization. The metamaterial structu…
physics.optics2018
Mid-infrared optics using dielectrics with refractive indices below unity
Alireza Shahsafi, Yuzhe Xiao, Jad Salman +4
Conventional transparent materials at optical frequencies have refractive index values (n) greater than unity -- most commonly between about 1 and 4. This paper explores optical ph…