Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/147844
Title: NON-LINEAR OPTICS IN PLASMONIC NANOANTENNA STRUCTURES AND METAMATERIALS
Authors: NGUYEN NGOC BAO
Keywords: Nanolasers, Plasmonics, Parity-Time Symmetry
Issue Date: 18-Sep-2018
Citation: NGUYEN NGOC BAO (2018-09-18). NON-LINEAR OPTICS IN PLASMONIC NANOANTENNA STRUCTURES AND METAMATERIALS. ScholarBank@NUS Repository.
Abstract: The topic of gain/loss and dispersion is fundamental to the construction of various nanophotonic devices. Through a unique branch of physics called Parity Time Symmetry (PTS), the interplay between gain and loss opens many opportunities to make gain/loss and dispersion necessary parts of the operation of PTS optical devices. The spatial refractive index profile of an optical PTS system, n(x,y,z) requires R{n(x,y,z)} to be spatially symmetric and I{n(x,y,z)} to be spatially antisymmetric. To assess the feasibility of generating high gain and the extent of dispersion effects in nanooptics, we demonstrate experimentally a practical GaAs plasmonic laser based on the hybrid gap plasmon waveguide. The useful application of dispersion in optical PTS is investigated in a Silicon-based active PTS grating. The results of these works improve our understanding of the gain/loss and dispersion mechanism in PTS optical devices and lay the foundation for an efficient design of PTS optical diodes.
URI: http://scholarbank.nus.edu.sg/handle/10635/147844
Appears in Collections:Ph.D Theses (Open)

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