Keywords:carbon nanotube, optical properties, exciton
Carbon nanotubes exhibit distinct optical properties, which potentially provides various promising applications including photonic and thermo-optic devices. Although their optical properties strongly depend on their chirality, systematic knowledge on the broadband optical spectra of macroscopic membranes composed of nanotube with single chirality has still been limited. Here, we will report broadband complex refractive index spectra of single-chirality-enriched nanotube membranes from far-infrared to visible regions, and propose their empirical expression, as can be readily used by engineers for optical design.
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