Manipulating Light Matter Interactions In Two Dimensional Semiconductors Coupled With Plasmonic Lattices

Understanding and tailoring light-matter interactions is critical to many fields, offering valuable insights into the nature of materials, as well as allowing a variety of applications such as detectors, sensors, switches, modulators, and lasers. While reducing the optical mode volume is critical to enhancing the light-matter interaction strength, plasmonic systems, with their extraordinary ability to confine the light far below the diffraction limit of light, provide intriguing platforms in boosting the light-matter interactions at nanoscale.On the other hand, atomically thin semiconductors such as few-layered transition metal dichalcogenides (TMDs), a recently discovered class of materials, exhibit unique optical properties such as large exciton binding energies, tightly-bond trion excitations, and valley-spin locking, allowing the observations of interesting photonic and electronic phenomena including strong photon-exciton coupling, valley Zeeman and valley optical Stark effect, valley Hall effect, and spin light emitting, hence serve as great candidates to study light-matter interactions in two dimensional systems.In this thesis, combining the two intriguing optical and material systems, we study light-matter interactions between 2D semiconductors and 2D plasmonic lattices, due to their compatibility with 2D semiconductors as well as strong and highly tunable plasmonic resonances. We investigated exciton-plasmon coupling by integrating MoS2 with plasmonic lattices of various geometrical designs and observed rich phenomena in different coupling regimes.We will first present a detailed study of observing exciton-plasmon coupling in weak, intermediate and strong coupling regimes via different plasmonic lattice design. We've demonstrated large Purcell enhancement in weak coupling regime, and Fano resonances in intermediate coupling regime, and exciton-plasmon polariton formation in strong coupling regime. After that, we will discuss active tuning of the coupling strengths all the way across the weak and strong coupling regime via electrical gating. Finally, we will demonstrate chiral exciton-plasmon coupling by designing chiral plasmonic lattices.

Nanoscale Semiconductor Lasers focuses on specific issues relating to laser nanomaterials and their use in laser technology. The book presents both fundamental theory and a thorough overview of the diverse range of applications that have been developed using laser technology based on novel nanostructures and nanomaterials. Technologies covered include nanocavity lasers, carbon dot lasers, 2D material lasers, plasmonic lasers, spasers, quantum dot lasers, quantum dash and nanowire lasers. Each chapter outlines the fundamentals of the topic and examines material and optical properties set alongside device properties, challenges, issues and trends. Dealing with a scope of materials from organic to carbon nanostructures and nanowires to semiconductor quantum dots, this book will be of interest to graduate students, researchers and scientific professionals in a wide range of fields relating to laser development and semiconductor technologies. Provides an overview of the active field of nanostructured lasers, illustrating the latest topics and applications Demonstrates how to connect different classes of material to specific applications Gives an overview of several approaches to confine and control light emission and amplification using nanostructured materials and nano-scale cavities

This thesis presents a comprehensive theoretical description of classical and quantum aspects of plasmonics in three and two dimensions, and also in transdimensional systems containing elements with different dimensionalities. It focuses on the theoretical understanding of the salient features of plasmons in nanosystems as well as on the multifaceted aspects of plasmon-enhanced light–matter interactions at the nanometer scale. Special emphasis is given to the modeling of nonclassical behavior across the transition regime bridging the classical and the quantum domains. The research presented in this dissertation provides useful tools for understanding surface plasmons in various two- and three-dimensional nanostructures, as well as quantum mechanical effects in their response and their joint impact on light–matter interactions at the extreme nanoscale. These contributions constitute novel and solid advancements in the research field of plasmonics and nanophotonics that will help guide future experimental investigations in the blossoming field of nanophotonics, and also facilitate the design of the next generation of truly nanoscale nanophotonic devices.

Metal Halide Perovskites for Generation, Manipulation and Detection of Light covers the current state and future prospects of lead halide perovskite photonics and photon sources, both from an academic and industrial point-of-view. Advances in metal halide perovskite photon sources (lasers) based on thin films, microcrystals and nanocrystals are comprehensively reviewed, with leading experts contributing current advances in theory, fundamental concepts, fabrication techniques, experiments and other important research innovations. This book is suitable for graduate students, researchers, scientists and engineers in academia and R&D in industry working in the disciplines of materials science and engineering. Includes comprehensive reviews from academic and industrial perspectives of current trends in the field of metal halide perovskite for photonics Provides an up-to-date look at the most recent and upcoming applications in metal halide perovskite photonics, such as; photodetectors, lighting, lasing, nonlinear photonics and quantum technologies Discusses future prospective trends and envisioned applications of metal halide perovskites, from near-UV to near-IR photonics

The physics of strong light-matter coupling has been addressed in different scientific communities over the last three decades. Since the early eighties, atoms coupled to optical and microwave cavities have led to pioneering demonstrations of cavity quantum electrodynamics, Gedanken experiments, and building blocks for quantum information processing, for which the Nobel Prize in Physics was awarded in 2012. In the framework of semiconducting devices, strong coupling has allowed investigations into the physics of Bose gases in solid-state environments, and the latter holds promise for exploiting light-matter interaction at the single-photon level in scalable architectures. More recently, impressive developments in the so-called superconducting circuit QED have opened another fundamental playground to revisit cavity quantum electrodynamics for practical and fundamental purposes. This book aims at developing the necessary interface between these communities, by providing future researchers with a robust conceptual, theoretical and experimental basis on strong light-matter coupling, both in the classical and in the quantum regimes. In addition, the emphasis is on new forefront research topics currently developed around the physics of strong light-matter interaction in the atomic and solid-state scenarios.

Considered a major field of photonics, plasmonics offers the potential to confine and guide light below the diffraction limit and promises a new generation of highly miniaturized photonic devices. This book combines a comprehensive introduction with an extensive overview of the current state of the art. Coverage includes plasmon waveguides, cavities for field-enhancement, nonlinear processes and the emerging field of active plasmonics studying interactions of surface plasmons with active media.

This book presents the latest results of quantum properties of light in the nanostructured environment supporting surface plasmons, including waveguide quantum electrodynamics, quantum emitters, strong-coupling phenomena and lasing in plasmonic structures. Different approaches are described for controlling the emission and propagation of light with extreme light confinement and field enhancement provided by surface plasmons. Recent progress is reviewed in both experimental and theoretical investigations within quantum plasmonics, elucidating the fundamental physical phenomena involved and discussing the realization of quantum-controlled devices, including single-photon sources, transistors and ultra-compact circuitry at the nanoscale.