Abstract
We have studied the geometry dependency of fishnet-like negative refractive index meta-materials (NIMs), and developed a process to fabricate such NIMs using nanoimprint lithography (NIL) in a controlled way for it to achieve negative refractive index in the desired frequency range. As an example, we fabricated a fishnet structure with a minimum negative refractive index of −1.7 at 1560 nm, which was only 10 nm off the targeted wavelength of 1550 nm.
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Wu, W., Ponizovskaya, E., Kim, E. et al. Geometrical dependence of optical negative index meta-materials at 1.55 μm. Appl. Phys. A 95, 1119–1122 (2009). https://doi.org/10.1007/s00339-009-5139-9
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DOI: https://doi.org/10.1007/s00339-009-5139-9