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Author: Ping-Chun Li
Publisher:
ISBN:
Category :
Languages : en
Pages : 198
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Book Description
Manipulation of light via subwavelength nanostructures is currently a subject of intense research interest, and is enabling the development of nanostructured photonic crystal, metamaterials and metasurfaces that provide a variety of new optical and electromagnetic functionalities, or that enable existing functionalities to be realized in new and often extremely compact form factors. This dissertation will include wide-angle wavelength-selective metasurface, omnidirectional enhancement in photovoltaic performance via subwavelength gradient anti-reflection coating, and applications of birefringent nanocylinders for single-molecule spectroscopy. In wide-angle wavelength-selective metasurface, high and broad reflectance (~95%) with low absorption (5%) are shown to be achieved with multilayer metasurface structures. These characteristics are shown to be independent of interlayer misalignment and defects within individual layers. Interactions between different metasurface layers due to Fabry-Perot resonance are also examined with analytical models and numerical simulations. Wavelength-selective focusing at optical wavelengths which is enabled by large-area nanosphere lithography on a flexible substrate is demonstrated. In omnidirectional enhancement in photovoltaic performance via subwavelength gradient anti-reflection coating, large-area "moth-eye" structure fabricated on a flexible substrate is shown to have high transmittance (85%) at large angle of incidences (>70°) and insensitivity to polarizations. Integration of the "moth-eye" anti-reflection coating together with nanostructured gradient A12O3/TiO2 on a GaAs solar cell shows significant improvements on external quantum efficiency (EQE) and short circuit current over all angle of incidences compared with conventional thin film anti-reflection coating. Detailed design, simulation, and fabrication of these nanostructured anti-reflection coating for reducing the discontinuity in refractive index profile will also be discussed. In application of birefringent nanocylinders for single-molecule spectroscopy, the design and fabrication method for large quantity of subwavelength birefringent nanoparticle are also discussed. These birefringent nanoparticles are shown to be stably trapped in an optical torque wrench setup, and enable observation of the dynamical response of a double-stranded DNA under torsional and extensional forces.
Author: Ping-Chun Li
Publisher:
ISBN:
Category :
Languages : en
Pages : 198
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Book Description
Manipulation of light via subwavelength nanostructures is currently a subject of intense research interest, and is enabling the development of nanostructured photonic crystal, metamaterials and metasurfaces that provide a variety of new optical and electromagnetic functionalities, or that enable existing functionalities to be realized in new and often extremely compact form factors. This dissertation will include wide-angle wavelength-selective metasurface, omnidirectional enhancement in photovoltaic performance via subwavelength gradient anti-reflection coating, and applications of birefringent nanocylinders for single-molecule spectroscopy. In wide-angle wavelength-selective metasurface, high and broad reflectance (~95%) with low absorption (5%) are shown to be achieved with multilayer metasurface structures. These characteristics are shown to be independent of interlayer misalignment and defects within individual layers. Interactions between different metasurface layers due to Fabry-Perot resonance are also examined with analytical models and numerical simulations. Wavelength-selective focusing at optical wavelengths which is enabled by large-area nanosphere lithography on a flexible substrate is demonstrated. In omnidirectional enhancement in photovoltaic performance via subwavelength gradient anti-reflection coating, large-area "moth-eye" structure fabricated on a flexible substrate is shown to have high transmittance (85%) at large angle of incidences (>70°) and insensitivity to polarizations. Integration of the "moth-eye" anti-reflection coating together with nanostructured gradient A12O3/TiO2 on a GaAs solar cell shows significant improvements on external quantum efficiency (EQE) and short circuit current over all angle of incidences compared with conventional thin film anti-reflection coating. Detailed design, simulation, and fabrication of these nanostructured anti-reflection coating for reducing the discontinuity in refractive index profile will also be discussed. In application of birefringent nanocylinders for single-molecule spectroscopy, the design and fabrication method for large quantity of subwavelength birefringent nanoparticle are also discussed. These birefringent nanoparticles are shown to be stably trapped in an optical torque wrench setup, and enable observation of the dynamical response of a double-stranded DNA under torsional and extensional forces.
Author: Kikuo Cho
Publisher: Springer Science & Business Media
ISBN: 3662051753
Category : Technology & Engineering
Languages : en
Pages : 192
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Book Description
This book gives a theoretical description of linear and nonlinear optical responses of matter with special emphasis on the microscopic and ‘nonlocal’ nature of resonant response. It will have a tremendous influence on modern device techniques, as it deals with frontier research in response theory.
Author: Carlos Torres-Torres
Publisher: Springer Nature
ISBN: 3031108248
Category : Science
Languages : en
Pages : 181
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Book Description
This book provides readers with a detailed overview of second- and third-order nonlinearities in various nanostructures, as well as their potential applications. Interest in the field of nonlinear optics has grown exponentially in recent years and, as a result, there is increasing research on novel nonlinear phenomena and the development of nonlinear photonic devices. Thus, such a book serves as a comprehensive guide for researchers in the field and those seeking to become familiar with it. This text focuses on the nonlinear properties of nanostructured systems that arise as a result of optical wave mixing. The authors present a review of nonlinear optical processes on the nanoscale and provide theoretical descriptions for second and third-order optical nonlinearities in nanostructures such as carbon allotropes, metallic nanostructures, semiconductors, nanocrystals, and complex geometries. Here, the characterization and potential applications of these nanomaterials are also discussed. The factors that determine the nonlinear susceptibility in these systems are identified as well as the influence of physical mechanisms emerging from resonance and off-resonance excitations. In addition, the authors detail the effects driven by important phenomena such as quantum confinement, localized surface plasmon resonance, Fano resonances, bound states, and the Purcell effect on specific nanostructured systems. Readers are provided with a groundwork for future research as well as new perspectives in this growing field.
Author: Aída Serrano Rubio
Publisher: Springer
ISBN: 331919402X
Category : Science
Languages : en
Pages : 196
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Book Description
This work pursues a novel route to functionalizing large surfaces with hybrid nanoparticles. It also casts new light on the combined use of surface plasmon resonance and X-rays. SPR spectroscopy is employed to study Au-based plasmonic nanostructures fabricated by novel methods, and a new experimental device is developed combining SPR with X-ray absorption spectroscopy at a synchrotron beamline. Using the new SPR-XAS setup developed in this work, the author has studied in-situ and real-time effects of X-ray irradiation in materials such as glasses and Co-phthalocyanines.
Author: Rui Guo
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
Integrated nano-optics and nano-photonics have been very hot topics in the last two decades, and they play very important roles in telecommunications, optical interconnectors, integrated sensing devices, just to name a few. Traditionally, integrated photonic crystals, Mach Zehnder waveguides interferometers, ring resonators, gratings are the key elements for integrated photonic circuits, however, they are bulky and there is a room to decrease further the functional areas to make more compact integrated photonic devices. Due to their ability to confine light in sub-wavelength volumes plasmonic nanoparticles and nanoantennas can serve as a fundamental link between electronic and photonic circuits, as they can bridge large size mismatch between the electronic and optical wave function. Thus, plasmonic elements can be utilized to increase the integration density and performance of active and passive photonic devices, as well as to include new functionalities and concepts for photonic chips. Therefore, our goal is to design subwavelength functional areas by utilizing plasmonic meta atoms to manipulate both farfield and localized light and integrate these plasmonic functional areas into dielectric optical waveguides. However, plasmonic materials suffer from their intrinsic absorption. All-dielectric nanoantennas, on the other hand, exhibit high radiation efficiencies, but the lower field confinement and enhancement which also reduce coupling efficiencies. Therefore, this thesis is mainly focused on exploiting the novel applications in integrated photonic devices based on applying the advantages of plasmonic and dielectric nanoantennas, respectively. The topics include the integration of plasmonic nanoantennas on silicon waveguides, such as the spectral band splitting by using a single Fano nanoantenna, and polarization demultiplexing by utilizing a dragon fly shape nanoantenna. Furthermore, this thesis also contains hybrid and all dielectric metasurfaces in localized light manipulating, biosensing, and opto-mechanics applications.
Author: Igal Brener
Publisher: Woodhead Publishing
ISBN: 0081024037
Category : Science
Languages : en
Pages : 310
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Book Description
Dielectric Metamaterials: Fundamentals, Designs and Applications links fundamental Mie scattering theory with the latest dielectric metamaterial research, providing a valuable reference for new and experienced researchers in the field. The book begins with a historical, evolving overview of Mie scattering theory. Next, the authors describe how to apply Mie theory to analytically solve the scattering of electromagnetic waves by subwavelength particles. Later chapters focus on Mie resonator-based metamaterials, starting with microwaves where particles are much smaller than the free space wavelengths. In addition, several chapters focus on wave-front engineering using dielectric metasurfaces and the nonlinear optical effects, spontaneous emission manipulation, active devices, and 3D effective media using dielectric metamaterials. Highlights a crucial link in fundamental Mie scattering theory with the latest dielectric metamaterial research spanning materials, design and applications Includes coverage of wave-front engineering and 3D metamaterials Provides computational codes for calculating and simulating Mie resonances
Author: Wataru Nakagawa
Publisher:
ISBN:
Category :
Languages : en
Pages : 290
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Book Description
Author:
Publisher: Soffer Publishing
ISBN:
Category :
Languages : en
Pages : 91
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Book Description
Author: O. A. Aktsipetrov
Publisher: CRC Press
ISBN: 1315360012
Category : Science
Languages : en
Pages : 309
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Book Description
The theory and practice of the non-linear optics of silicon are inextricably linked with a variety of areas of solid state physics, particularly semiconductor physics. However, the current literature linking these fields is scattered across various sources and is lacking in depth. Second Order Non-linear Optics of Silicon and Silicon Nanostructures describes the physical properties of silicon as they apply to non-linear optics while also covering details of the physics of semiconductors. The book contains six chapters that focus on: The physical properties and linear optics of silicon Basic theoretical concepts of reflected second harmonics (RSH) The authors’ theory of the generation of RSH at the non-linear medium–linear medium interface An analytical review of work on the non-linear optics of silicon The results of non-linear optical studies of silicon nanostructures A theory of photoinduced electronic processes in semiconductors and their influence on RSH generation The book also includes methodological problems and a significant amount of reference data. It not only reflects the current state of research but also provides a single, thorough source of introductory information for those who are becoming familiar with non-linear optics. Second Order Non-linear Optics of Silicon and Silicon Nanostructures is a valuable contribution to the fields of non-linear optics, semiconductor physics, and microelectronics, as well as a useful resource for a wide range of readers, from undergraduates to researchers.
Author: Vladimir M. Shalaev
Publisher: Springer Science & Business Media
ISBN: 3540449485
Category : Science
Languages : en
Pages : 480
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Book Description
The contributors to the book are world best experts in the optics of random media; they provide a state-of-the-art review of recent developments in the field including nonlinear optical and magneto-optical properties, Raman and hyper-Raman scattering, laser action, plasmon excitation and localized giant fields, imaging and spectroscopy of random media
