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Title: Design of topological terahertz quantum cascade laser
Authors: Eng, John Jun Hong
Keywords: Engineering::Electrical and electronic engineering
Issue Date: 2021
Publisher: Nanyang Technological University
Source: Eng, J. J. H. (2021). Design of topological terahertz quantum cascade laser. Final Year Project (FYP), Nanyang Technological University, Singapore.
Abstract: Arising from condensed matter physics, topological photonics grants a new degree of freedom to design photonic devices with modes robust against perturbations arising from fabrication and sharp corners. For semiconductor laser systems, namely quantum cascade laser (QCL), it allows for non-conventional cavity designs and perhaps interesting lasing properties through one of the many topological phases. One such effect is the quantum spin Hall effect (QSHE) which requires pseudospin-orbital coupling. Here, we propose a laser cavity design that could mimic the QSHE to produce light with spin angular momentum (SAM) while having the benefits of topologically protected modes.
Fulltext Permission: restricted
Fulltext Availability: With Fulltext
Appears in Collections:EEE Student Reports (FYP/IA/PA/PI)

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