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Explore Prof. Vladimir M. Shalaev's groundbreaking work in nanoantennas and two-photon absorption enhancement. Discover nanostructure fabrication, transformation optics, and optical limiting advancements. Delve into the realm of plasmonic nanoantennas design, fabrication, and characterization for photonics and optics research. Learn about innovative techniques like E-beam lithography and rapid thermal annealing. Dive into the world of nonlinear power dissipation and explore the potential of enhanced local fields in optical research.
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Introduction Nanoantennas • Prof. Vladimir M. Shalaev • http://cobweb.ecn.purdue.edu/~photspec NIM and fishnet structure Superlens and hyperlens Transformation optics and cloaking Prof. Vlad Shalaev
Kuo-Ping Chen (Ph.D candidate, ECE) • Research: Plasmonic Nanoantennas Design and Fabrication for Two Photon Absorption Enhancement • Specialty: nano-structure fabrication, characterization, photonics and optics/laser research Before annealing After annealing Top view Side view Kuo-Ping Chen, etc. Drude Relaxation Rate in Grained Gold Nanoantennas, Nano Letters (2010). Prof. Vlad Shalaev
Optical Limiting Optical Limiter: a device which keeps the transmitted power below some specified value. Nonlinear Power dissipation is correlated to |E4| Use the nanoantennas enhanced local field α : linear absorption coefficient (OPA) β : nonlinear absorption coefficient (2PA) Prof. Vlad Shalaev
Fabrication E-beam lithography E-beam evaporation Nanolithography Rapid Thermal Annealing Thin film Spin Coating Organic material thin-film thermal evaporation Characterization SEM AFM Surface profile XRD TEM NSOM Far-Field spectra system Spectroscopic Ellipsometer Z-scan nonlinear measurement system Tools Prof. Vlad Shalaev