Undergraduate Thesis Or Project
 

Complex Index of Refraction of Multi-walled Carbon Nanotubes in Strong Terahertz Fields

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https://ir.library.oregonstate.edu/concern/undergraduate_thesis_or_projects/gx41mk38f

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  • Carbon nanotubes are the subject of intense interest in virtually every field, from medicine to nano-scale electrical components. Multi-walled nanotubes exhibit a strong nonlinear response to high-field strength terahertz radiation. This research uses terahertz pulses with field strength exceeding 1 MV/cm generated by means of optical rectification utilizing a lithium niobate prism to determine the complex refractive index of free standing highly aligned multi-walled carbon nanotubes wound around a polyethylene reel. Computational techniques are used to determine the index of refraction and extinction coefficient simultaneously as a function of frequency.
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