Microcavities and Photonic Bandgaps: Physics and Applications - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Microcavities and Photonic Bandgaps: Physics and Applications write by J.G. Rarity. This book was released on 2012-12-06. Microcavities and Photonic Bandgaps: Physics and Applications available in PDF, EPUB and Kindle. The control of optical modes in microcavities or in photonic bandgap (PBG) materials is coming of age! Although these ideas could have been developed some time ago, it is only recently that they have emerged, due to advances in both atomic physics and in fabrication techniques, be it on the high-quality dielectric mirrors required for high-finesse Fabry Perot resonators or in semiconductor multilayer deposition methods. Initially the principles of quantum electro-dynamics (QED) were demonstrated in elegant atomic physics experiments. Now solid-state implementations are being investigated, with several subtle differences from the atomic case such as those due to their continuum of electronic states or the near Boson nature of their elementary excitations, the exciton. Research into quantum optics brings us ever newer concepts with potential to improve system performance such as photon squeezing, quantum cryptography, reversible taps, photonic de Broglie waves and quantum computers. The possibility of implementing these ideas with solid-state systems gives us hope that some could indeed find their way to the market, demonstrating the continuing importance of basic research for applications, be it in a somewhat more focused way than in earlier times for funding.
Photonic Band Gap Materials
Photonic Band Gap Materials - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Photonic Band Gap Materials write by C.M. Soukoulis. This book was released on 2012-12-06. Photonic Band Gap Materials available in PDF, EPUB and Kindle. Photonic band gap crystals offer unique ways to tailor light and the propagation of electromagnetic waves. In analogy to electrons in a crystal, EM waves propagating in a structure with a periodically-modulated dielectric constant are organized into photonic bands separated by gaps in which propagating states are forbidden. Proposed applications of such photonic band gap crystals, operating at frequencies from microwave to optical, include zero- threshold lasers, low-loss resonators and cavities, and efficient microwave antennas. Spontaneous emission is suppressed for photons in the photonic band gap, offering novel approaches to manipulating the EM field and creating high-efficiency light-emitting structures. Photonic Band Gap Materials identifies three most promising areas of research. The first is materials fabrication, involving the creation of high quality, low loss, periodic dielectric structures. The smallest photonic crystals yet fabricated have been made by machining Si wafers along (110), and some have lattice constants as small as 500 microns. The second area is in applications. Possible applications presented are microwave mirrors, directional antennas, resonators (especially in the 2 GHz region), filters, waveguides, Y splitters, and resonant microcavities. The third area covers fundamentally new physical phenomena in condensed matter physics and quantum optics. An excellent review of recent development, covering theoretical, experimental and applied aspects. Interesting and stimulating reading for active researchers, as well as a useful reference for non-specialists.
Tunable Microcavities in Photonic Bandgap Yarns and Optical Fibers
Tunable Microcavities in Photonic Bandgap Yarns and Optical Fibers - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Tunable Microcavities in Photonic Bandgap Yarns and Optical Fibers write by Gilles Benoit. This book was released on 2010-10. Tunable Microcavities in Photonic Bandgap Yarns and Optical Fibers available in PDF, EPUB and Kindle. The vision behind this work is the fabrication of high performance innovative fiber-based optical components over kilometer length-scales. Their optical properties derive from their multilayer dielectric photonic band-gap structure that exhibits omnidirectional reflectivity. The theoretical tools needed to design, analyze and optimize such structures are introduced. We show that defect layers in these otherwise periodic structures act as micro-cavities that enable precise design of the fibers' spectral response. Two structures are explored: fibers for external reflection and hollow- core transmission fibers. We demonstrate that the resonance wavelength of Fabry-Perot cavities embedded in reflecting fibers can be tuned reversibly under applied elastic strain or external illumination at 514 nm. Experimental data is compared to computed data based on opto-mechanical and photodarkening models. We then show that optical micro-cavities in transmission fibers can induce significant group-velocity dispersion as a result of modal interactions. Applications for these fibers and future research directions are envisioned.
Electron and Photon Confinement in Semiconductor Nanostructures
Electron and Photon Confinement in Semiconductor Nanostructures - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Electron and Photon Confinement in Semiconductor Nanostructures write by Benoît Deveaud. This book was released on 2003. Electron and Photon Confinement in Semiconductor Nanostructures available in PDF, EPUB and Kindle. The purpose of this course was to give an overview of the physics of artificial semiconductor structures confining electrons and photons. It furnishes the background for several applications in particular in the domain of optical devices, lasers, light emitting diodes or photonic crystals. The effects related to the microactivity polaritons, which are mixed electromagnetic radiation-exciton states inside a semiconconductor microactivity are covered. The study of the characteristics of such states shows strong relations with the domain of cavity quantum electrodynamics and thus with the investigation of some fundamental theoretical concepts.
Photonic Crystals, Theory, Applications and Fabrication
Photonic Crystals, Theory, Applications and Fabrication - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Photonic Crystals, Theory, Applications and Fabrication write by Dennis W Prather. This book was released on 2009-05-26. Photonic Crystals, Theory, Applications and Fabrication available in PDF, EPUB and Kindle. The Only Source You Need for Understanding the Design and Applications of Photonic Crystal-Based Devices This book presents in detail the fundamental theoretical background necessary to understand the unique optical phenomena arising from the crystalline nature of photonic-crystal structures and their application across a range of disciplines. Organized to take readers from basic concepts to more advanced topics, the book covers: Preliminary concepts of electromagnetic waves and periodic media Numerical methods for analyzing photonic-crystal structures Devices and applications based on photonic bandgaps Engineering photonic-crystal dispersion properties Fabrication of two- and three-dimensional photonic crystals The authors assume an elementary knowledge of electromagnetism, vector calculus, Fourier analysis, and complex number analysis. Therefore, the book is appropriate for advanced undergraduate students in physics, applied physics, optics, electronics, and chemical and electrical engineering, as well as graduate students and researchers in these fields.
