Manipulating Light With Nano Photonic Structures
DOWNLOAD
Download Manipulating Light With Nano Photonic Structures PDF/ePub or read online books in Mobi eBooks. Click Download or Read Online button to get Manipulating Light With Nano Photonic Structures book now. This website allows unlimited access to, at the time of writing, more than 1.5 million titles, including hundreds of thousands of titles in various foreign languages. If the content not found or just blank you must refresh this page
Manipulating Light With Nano Photonic Structures
DOWNLOAD
Author : Bo Zeng
language : en
Publisher:
Release Date : 2015
Manipulating Light With Nano Photonic Structures written by Bo Zeng and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with categories.
Manipulation light in the nano scale, by controlling its phase or magnitude, is key to efficient and compact designs in modern photonic technology. Its application ranges from tele-communication, biological imaging to probing electronic phenomena and quantum computation. High Quality factor (Q) resonators for both dielectric and metallic devices with two dimensional form factors, and high on-off ratio wave modulators where light transmission can be tuned in situ are exemplary ideas and of great interest and importance in those applications. Among the light waves, terahertz radiation, known as the last frontier connecting microwave and optical regime in the electromagnetic spectrum, has been an increasingly active field of research. Recent development of THz sources and detection has led to an increasing demand of active devices for its wave manipulation. In the thesis, we focus our effort on developing novel nano photonic structures that act as better light modulator and resonators. We first develop theories regarding principles and techniques to achieve tunable high Q resonances in dielectric photonic structures using a new "diatomic" design. The essence of the "diatomic" design is that it can dramatically improve Q of the resonating modes by minimizing the radiative far-field coupling. We then extend the concept of "diatomic" in dielectric gratings to "diatomic" metallic cavities that results in high Q plasmonic metamaterial resonators compared to conventional designs. Lastly, we demonstrate, in simulation and experiment, a hybrid metamaterial design showing much larger modulation power by combining metallic nano-slits with graphene, a promising THz-active 2D material. Our investigation into THz metamaterial designs combines device fabrication, numerical simulation, semi-analytical modelling and ultra-fast time domain THz measurements. Our theoretical and experimental results could provide insight to the physical understanding and future development of THz metamaterial devices, as well as being of value to the THz community that seeks application with high performance modulator/resonators in general.
Nanophotonics
DOWNLOAD
Author : Hongxing Xu
language : en
Publisher: CRC Press
Release Date : 2017-11-09
Nanophotonics written by Hongxing Xu and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-11-09 with Science categories.
The manipulation of light at the nanometer scale is highly pursued for both fundamental sciences and wide applications. The diffraction limit of light sets the limit for the smallest size of photonic devices to the scale of light wavelength. Fortunately, the peculiar properties of surface plasmons in metal nanostructures make it possible to squeeze light into nanoscale volumes and enable the manipulation of light and light–matter interactions beyond the diffraction limit. Studies on surface plasmons have led to the creation of a booming research field called plasmonics. Because of its various scientific and practical applications, plasmonics attracts researchers from different fields, making it a truly interdisciplinary subject. Nanophotonics: Manipulating Light with Plasmons starts with the general physics of surface plasmons and a brief introduction to the most prominent research topics, followed by a discussion of computational techniques for light scattering by small particles. Then, a few special topics are highlighted, including surfaceenhanced Raman scattering, optical nanoantennas, optical forces, plasmonic waveguides and circuits, and gain-assisted plasmon resonances and propagation. The book discusses the fundamental and representative properties of both localized surface plasmons and propagating surface plasmons. It explains various phenomena and mechanisms using elegant model systems with well-defined structures, is illustrated throughout with excellent figures, and contains an extensive list of references at the end of each chapter. It will help graduate-level students and researchers in nanophotonics, physics, chemistry, materials science, nanoscience and nanotechnology, and electrical and electronic engineering get a quick introduction to this field.
Novel Angular And Frequency Manipulation Of Light In Nano Scaled Dielectric Photonic Systems
DOWNLOAD
Author : Yichen Shen (Ph. D.)
language : en
Publisher:
Release Date : 2016
Novel Angular And Frequency Manipulation Of Light In Nano Scaled Dielectric Photonic Systems written by Yichen Shen (Ph. D.) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with categories.
Humankind has long endeavored to control light. In modern society, with the rapid development of nanotechnology, the control of light is moving toward devices at micrometer and even nanometer scales. At such scales, traditional devices based on geometrical optics reach their fundamental diffraction limits and cease to work. Nano-photonics, on the other hand, has attracted wide attention from researchers, especially in the last decade, due to its ability to manipulate light at the nanoscale. In this thesis, we explore novel control of light created by nanophotonic structures, with a common theme on light interference in nanoscaled dielectric photonic systems. The first part of the thesis focuses on broadband angular selective nanophotonic systems. We survey the literatures and the current state of the art focused on enabling optical broadband angular selectivity. We also present a novel way of achieving broadband angular selectivity using Brewster mode in nanophotonic systems. We propose two categories of potential applications for broadband angularly selective systems. The first category aims at enhancing the efficiency of solar energy harvesting, through photovoltaic process or solar thermal process. The second category aims at enhancing light extracting efficiency and detection sensitivity. Finally, we discuss the most prominent challenges in broadband angular selectivity and some prospects on how to solve these challenges. The second part of the thesis focuses on spectrum control of light using all-dielectric surface resonator. We proposes a new structural color generation mechanism that produces colors by the Fano resonance effect on thin photonic crystal slab. We experimentally realize the proposed idea by fabricating the samples that show resonance-induced colors with weak dependence on the viewing angle. We also show that the colors can be dynamically tuned by stretching the photonic crystal slab fabricated on an elastic substrate. In a follow up work, we address how to overcome the challenge of mode leaking on dielectric substrate. We present a class of low-index zigzag surface structure that supports resonance modes even without index contrast with the substrate. In the third part, we investigate neuromorphic computation using the interference of light in on-chip dielectric photonic waveguide network. We first mathematically prove that conventional neural networks architecture can be equivalently represented by nanoscaled optical systems. We then experimentally demonstrate that our optical neural networks are able to give equivalent accuracy on a standard training datasets. In the last part, we show that in principle optical neural nets are at least 3 orders of magnitude faster and power efficient in forward propagation than conventional neural nets.
Nano Structures For Optics And Photonics
DOWNLOAD
Author : Baldassare Di Bartolo
language : en
Publisher: Springer
Release Date : 2014-10-06
Nano Structures For Optics And Photonics written by Baldassare Di Bartolo and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-10-06 with Science categories.
The contributions in this volume were presented at a NATO Advanced Study Institute held in Erice, Italy, 4-19 July 2013. Many aspects of important research into nanophotonics, plasmonics, semiconductor materials and devices, instrumentation for bio sensing to name just a few, are covered in depth in this volume. The growing connection between optics and electronics, due to the increasing important role plaid by semiconductor materials and devices, find their expression in the term photonics, which also reflects the importance of the photon aspect of light in the description of the performance of several optical systems. Nano-structures have unique capabilities that allow the enhanced performance of processes of interest in optical and photonic devices. In particular these structures permit the nanoscale manipulation of photons, electrons and atoms; they represent a very hot topic of research and are relevant to many devices and applications. The various subjects bridge over the disciplines of physics, biology and chemistry, making this volume of interest to people working in these fields. The emphasis is on the principles behind each technique and on examining the full potential of each technique.
Manipulation Of Light In Plasmonic Nano Structures
DOWNLOAD
Author : Rehab Kotb Abd-Allah
language : en
Publisher:
Release Date : 2014
Manipulation Of Light In Plasmonic Nano Structures written by Rehab Kotb Abd-Allah and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with Nanotechnology categories.
Abstract: Manipulating light at nano-scale is usually shadowed by the diffraction limit. Recently, plasmonics have emerged as a new technology that enables confining light at nano-scale. Using plasmonic structures, photonic devices can be shrunk from the micro-scale to the nano-scale. In this thesis, a novel structure to a plasmonic nano-filter is introduced and analyzed. The proposed nano-resonator has low loss, compact size and good sensing characteristics. A closed form model to the filter behavior is developed. The model is extracted from the waveguide physical parameters and provides a physical insight into the structure of the filter. An analytical model to the propagation constant and the losses of Metal-Insulator-Metal plasmonic waveguide is proposed. This model is simple, accurate, and shows a good agreement with Finite Difference Time Domain (FDTD) simulations. The model provides a good methodology to obtain high quality filters using cascaded inline filtering. Novel mechanisms for tuning and controlling the response of the plasmonic filter are introduced. These mechanisms allow for full control on the transmission response from these waveguide based structures. This control can be done mechanically, electrically, or optically. Wideband tuning range has been obtained using these schemes. The mechanical tunability is based on changing the filter dimensions using Micro/Nano electro mechanical systems (MEMS/NEMS). The electrical and optical tunability is based on using a nonlinear dielectric material with Pockels or Kerr effect. The tunability is achieved by applying an external voltage or through controlling the input light intensity. The proposed nano-filter supports both red and blue shift in the resonance response. A new approach to control the input light intensity by applying an external voltage to a previous stage is investigated. Tuning the resonance wavelength with high accuracy, minimum insertion loss and high quality factor is obtained using these approaches. The proposed nano-filter can be used in various plasmonic applications such as sensing, biomedical diagnostics and on-chip interconnects. Plasmonic structures can also be used to design nano-optical tweezers. A novel structure for nano optical tweezers using plasmonic triple slit structure is introduced and analyzed. The tweezers have deep potential wells that can trap sub-10-nm dielectric particle stably and efficiently. The resultant 50KT potential well provides tight trapping to the particle. The proposed plasmonic structure allows for steering the particle by simply changing the angle of the incident plane. This simple control allows efficient manipulation to the trapped particle over a wide angle range.
Controlling Light In Optically Induced Photonic Lattices
DOWNLOAD
Author : Bernd Terhalle
language : en
Publisher: Springer Science & Business Media
Release Date : 2011-01-28
Controlling Light In Optically Induced Photonic Lattices written by Bernd Terhalle and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-01-28 with Science categories.
Discrete periodic structures play an important role in physics, and have opened up an exciting new area of investigation in recent years. Questions relating to the control of light in such structures still represent a major challenge. It is this highly active field that is addressed in the present thesis. Using the model system of a photorefractive nonlinearity that allows one to simultaneously create and control photonic lattices by light, the author obtains a comprehensive picture of the control of nonlinear and quantum optics phenomena in photonic lattices. He describes and demonstrates experimentally for the first time resonant transitions in two-dimensional hexagonal lattices, including Rabi oscillations and Landau-Zener tunneling, as well as the direct control and exploitation of these transitions. A particular highlight of this thesis is the study of soliton-cluster switching and control of Zener tunneling.
Light Robotics Structure Mediated Nanobiophotonics
DOWNLOAD
Author : Jesper Glückstad
language : en
Publisher: Elsevier
Release Date : 2017-05-19
Light Robotics Structure Mediated Nanobiophotonics written by Jesper Glückstad and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-05-19 with Technology & Engineering categories.
Light Robotics – Structure-Mediated Nanobiophotonics covers the latest means of sculpting of both light and matter for achieving bioprobing and manipulation at the smallest scales. The synergy between photonics, nanotechnology and biotechnology spans the rapidly growing field of nanobiophotonics. Nanoscale resolutions enable optical scientists to assess ever more accurate information. However, scientific hypothesis testing demands tools, not only for observing nanoscopic phenomena, but also for reaching into and manipulating nanoscale constituents. Taking an application based focus, this book explores how nanophotonics can productively be used in both the biomedical and life sciences, allowing readers to clearly see how structure-mediated nanobiophotonics can be used to increase our engineering toolbox for biology at the smallest scales. This book will be of great use to researchers and scientists working in the fields of optics and photonics. It will also be of great value to those working in the field of biotechnology, showcasing how nanotechnology can help provide new, effective ways to solve biomedical problems. Presents cutting-edge research on the principles, mechanisms, optical techniques, fabrication, modeling, devices and applications of nanobiophotonics Brings together the diverse field of structure-mediated nanobiophotonics into one coherent volume Showcases how nanophotonics can be used to create new, more effective micro- and nano-biodevices
Manipulating Light At Nanoscale
DOWNLOAD
Author : Zongfu Yu
language : en
Publisher:
Release Date : 2009
Manipulating Light At Nanoscale written by Zongfu Yu and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009 with categories.
Photonics Volume 2
DOWNLOAD
Author : David L. Andrews
language : en
Publisher: John Wiley & Sons
Release Date : 2015-02-24
Photonics Volume 2 written by David L. Andrews and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-02-24 with Technology & Engineering categories.
Discusses the basic physical principles underlying the science and technology of nanophotonics, its materials and structures This volume presents nanophotonic structures and Materials. Nanophotonics is photonic science and technology that utilizes light/matter interactions on the nanoscale where researchers are discovering new phenomena and developing techniques that go well beyond what is possible with conventional photonics and electronics.The topics discussed in this volume are: Cavity Photonics; Cold Atoms and Bose-Einstein Condensates; Displays; E-paper; Graphene; Integrated Photonics; Liquid Crystals; Metamaterials; Micro-and Nanostructure Fabrication; Nanomaterials; Nanotubes; Plasmonics; Quantum Dots; Spintronics; Thin Film Optics Comprehensive and accessible coverage of the whole of modern photonics Emphasizes processes and applications that specifically exploit photon attributes of light Deals with the rapidly advancing area of modern optics Chapters are written by top scientists in their field Written for the graduate level student in physical sciences; Industrial and academic researchers in photonics, graduate students in the area; College lecturers, educators, policymakers, consultants, Scientific and technical libraries, government laboratories, NIH.
Aperiodic Plasmonics
DOWNLOAD
Author : Xinpeng Huang
language : en
Publisher:
Release Date : 2015
Aperiodic Plasmonics written by Xinpeng Huang and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with categories.
In the age of computers, there has been growing interest in many areas of science and engineering to use numerical techniques to explore problems that are mathematically or analytically intractable. In photonics specifically, there is a desire to design and realize non-periodic nanophotonic structures that outperform their periodic counterparts. One major obstacle to this goal is the necessity to solve the computationally expensive Maxwell's equations repeatedly over a vast parameter space. Here, we will apply the technique of numerical optimization to design aperiodic plasmonic nanostructures. Plasmonics, the study of driven collective oscillations of free electrons in metals, provides for optical modes with subwavelength footprints and is a promising compromise between the small world of electronics and the fast world of photonics. It is well known that nanostructured grooves and slits on a metallic surface are very strong generators and scatterers of surface plasmons, yet the geometries involved make exact analytical solutions impossible. The first step toward designing aperiodic plasmonic groove structures is to identify the fundamental building block of such structures, the metal-air groove, and simplify its mathematical representation so that calculations can be performed very quickly. After the building blocks are described in sufficient detail, the next step is the mathematical model that relates the individual building blocks together in a complete structure. We develop a computation strategy based on a transfer matrix model that can be used to calculate the plasmonic scattering properties of a number of closely spaced grooves to acceptable accuracy with extreme speed. Having characterized the building blocks and the model that glues them together, we apply these results, together with an optimization procedure, to design interesting aperiodic plasmonic groove structures. We first demonstrate a unidirectional launcher of surface plasmons from normally incident light with an extinction ratio of 55 to 1 using only five grooves. The unidirectional launcher is a great starting point due to its simplicity -- relatively few grooves are needed and there is only one operational wavelength, and yet the parameter space is already large enough to necessitate numerical optimization. Building on top of these results, we will conclude with an investigation of structures that split light into specific regions depending on their wavelength. This thesis demonstrates the ability to control the scattering and localization of plasmons using very few carefully chosen scattering elements, and the work presented here can be harnessed to design the next generation of subwavelength photonic devices.
