[PDF] Manipulating Light With Nano Photonic Structures eBook

Author : Bo Zeng
Publisher :
Page : 76 pages
File Size : 35,46 MB
Release : 2015
Category :
ISBN :

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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.

Author : Hongxing Xu
Publisher : CRC Press
Page : 240 pages
File Size : 12,53 MB
Release : 2017-11-09
Category : Science
ISBN : 1351767585

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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.

Author : Baldassare Di Bartolo
Publisher : Springer
Page : 589 pages
File Size : 22,69 MB
Release : 2014-10-06
Category : Science
ISBN : 9401791333

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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.

Author : Jesper Glückstad
Publisher : Elsevier
Page : 484 pages
File Size : 45,43 MB
Release : 2017-05-19
Category : Technology & Engineering
ISBN : 0081022484

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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

Author : National Research Council
Publisher : National Academies Press
Page : 245 pages
File Size : 20,53 MB
Release : 2007-06-21
Category : Science
ISBN : 0309102707

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As part of the Physics 2010 decadal survey project, the Department of Energy and the National Science Foundation requested that the National Research Council assess the opportunities, over roughly the next decade, in atomic, molecular, and optical (AMO) science and technology. In particular, the National Research Council was asked to cover the state of AMO science, emphasizing recent accomplishments and identifying new and compelling scientific questions. Controlling the Quantum World, discusses both the roles and challenges for AMO science in instrumentation; scientific research near absolute zero; development of extremely intense x-ray and laser sources; exploration and control of molecular processes; photonics at the nanoscale level; and development of quantum information technology. This book also offers an assessment of and recommendations about critical issues concerning maintaining U.S. leadership in AMO science and technology.

Author : Bernd Terhalle
Publisher : Springer Science & Business Media
Page : 111 pages
File Size : 17,43 MB
Release : 2011-01-28
Category : Science
ISBN : 3642166474

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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.

Author : Lieven B. P. Verslegers
Publisher :
Page : pages
File Size : 35,4 MB
Release : 2011
Category :
ISBN :

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Plasmonics has emerged as a technology that enables the creation of a wide range of miniaturized photonic devices. Nanostructured metals provide numerous new opportunities for manipulating light at a deep-subwavelength scale. This dissertation covers our work on exploiting nanostructured metals to create new and improved optical functionality. We provided the first experimental demonstration of far-field lensing using an aperiodic plasmonic slit array. This approach offers large design freedom, since these structures derive their behavior from local geometry. We illustrated this flexibility through simulations of efficient and compact planar nanoslit lenses that compensate for various angles of incidence. We further demonstrated the ability to perform phase front design in two dimensions by varying the local geometry in metallic nanoscale pillar arrays. We also considered aperiodic arrays of coupled metallic waveguides and numerically demonstrated that, for an incident plane wave, a focus of as small as one-hundredth of a wavelength can be achieved for a focal distance that is much longer than the wavelength. Moreover, the focusing behavior can be controlled by changing either the incident wavelength or the angle of incidence. We showed that this behavior can be understood using Hamiltonian optics ray tracing. Lastly, we developed the coupled-mode theory for resonant apertures. Such apertures are of fundamental interest, and form the basic building blocks for many applications in subwavelength optics and optoelectronics. We showed that the maximum transmission and absorption cross sections for subwavelength resonant apertures are only related to the wavelength of the incident light and the directivity of the aperture's radiation pattern and explained the spectral behavior of structures that support multiple resonances.

Author : David L. Andrews
Publisher : John Wiley & Sons
Page : 456 pages
File Size : 28,38 MB
Release : 2015-02-24
Category : Technology & Engineering
ISBN : 1118225511

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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.

Author : Yichen Shen (Ph. D.)
Publisher :
Page : 114 pages
File Size : 17,59 MB
Release : 2016
Category :
ISBN :

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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.