Studies of optical microresonators with dimensions between 0. Asymmetric backscattering of light and exceptional points. Crozier school of engineering and applied sciences, harvard university, 33 oxford street, cambridge, massachusetts 028, united states remarkable results have been recently obtained on the highly sensitive detection of analytes via the resonance shifts that result when they bind to the. Analogies between optical propagation and heat diffusion. Alloptical switching with bacteriorhodopsin protein coated microcavities and its application to low power computing circuits. Request pdf optical microcavities optical microcavities confine light to small. Pdf imaging soliton dynamics in optical microcavities. Enhanced nonlinear optics in photoniccrystal microcavities jorge bravoabad, alejandro rodriguez, peter bermel, steven g. Handbook of optical microcavities crc press book an optical cavity confines light within its structure and constitutes an integral part of a laser device. An overview of the theory of the linear optical response of planar semiconductor microcavities with embedded quantum wells is presented. Development of new fabrication processes and introduction of new.
Controlled coupling of semiconductor quantum dots to optical microcavities, by tian xia isbn. The former type is a standing wave cavity, and the latter is a traveling wave cavity. Purcell factor enhanced scattering efficiency in optical microcavities. Optical microcavities have attracted tremendous interest in both fundamental and applied research in the past few decades, thanks to their small footprint, easy integrability, and high quality factors. Waferscale arrays of highq silica optical microcavities erol ozgur,1,ersin huseyinoglu,1 and aykutlu dana1,2. Waferscale arrays of highq silica optical microcavities. Optical measurements of polariton strong coupling in semiconductor microcavities jacob hartman, ryan balili figure 2. This is the process that ocr processes the raw scanned files and creates a searchable pdf, or a separate text file in the case of files that cannot contain text, such as tiff or jpeg scanned files. Abstract an oxide aperture is used to confine optical modes in a micropillar structure. Alloptical switching with bacteriorhodopsin protein.
Analytical development and application of optical microcavities by sarah m. Of all resonant geometries, surface tensioninduced microcavities. Optical spectroscopy of gan microcavities with thicknesses. Optical measurement of polariton strong coupling in semiconductor microcavities jacob hartman faculty mentor. Highquality factor optical microcavities using oxide. Optical processes in microcavities advanced series in applied physics optical processes in microcavities advanced series in applied physics the dielectric microstructures act as ultrahigh q factors optical cavities, which modify the spontaneous emission rates and alter the spatial distribution of the input and output radiation. Enhanced nonlinear optics in photoniccrystal microcavities. Net coherent optical gain in strongly pumped semiconductor.
Optical microcavities confine light to small volumes by resonant recirculation. Therefore, a fabrication process utilizing all advantages of batch production, including photolithography, wet etch, and dry etch, transforms into a. Ballistic trajectories of optical wave packets within. Fabricationtolerant high quality factor photonic crystal. Optical spectroscopy of gan microcavities with thicknesses controlled using a plasma etchback r. To process optical signals, optical microcavities need to be utilized, these can stop light and allow a. Onchip optical microcavities shiyun lin and kenneth b. The dielectric microstructures act as ultrahigh q factors optical cavities, which modify the spontaneous emission rates and alter the spatial distributions of the input and output radiation. The universal importance of these structures has made them indispensable to a wide range of fields. Wildgen submitted to the graduate degree program in chemistry and the graduate faculty of the university of kansas in partial fulfillment of the requirements for the degree of doctor of philosophy. Quantum electrodynamics of semiconducting nanomaterials in optical microcavities abstract. Edwards department of physics and applied physics, university of strathclyde, glasgow g4 0ng, scotland. In particular, the optical properties close to the excitonic transition in the strong coupling regime are addressed and the formalism of. Reduction of toroidal cross section is observed to cause a.
Field representation for optical defect resonances in multilayer microcavities using quasinormal modes m. Microcavities are wavelengthsized optical cavities that trap light at specific wavelengths. Nonlinear optics in ultrahighq whisperinggallery optical. Scattering processes in an optical microcavity are investigated for the case of silicon nanocrystals embedded in an ultrahigh q toroid microcavity. Linear optical properties of semiconductor microcavities. An optical microcavity or microresonator is a structure formed by reflecting faces on the two sides of a spacer layer or optical medium, or by wrapping a waveguide in a circular fashion to form a ring. A pdf can contain searchable ocr text, which can be searched upon, or extracted and used within a document management system. This confinement allows photons trapped in the microcavity to strongly interact with matter, creating new quasiparticles called polaritons. Continuously tunable microdropletlaser in a microfluidic. Trappingassisted sensing of particles and proteins using. Review on deformed and perturbed optical microcavities h. Quantum dot spontaneous emission li fetime modification in optical microcavities using oxide apertured micropillars n.
Pdf lightconfining semiconductor nanoporous anodic. Optical properties and resonant cavity modes in axial. Molecular polaritons created by the strong coupling between matter and field in microcavities enable the control of molecular dynamical processes and optical response. Optical microcavities are structures that enable confinement of light to microscale volumes. Using total internal reflection from a dielectric interface or a photonic band gap in a periodic system. Field representation for optical defect resonances in. The response of molecules to local fluctuations is incorporated and the full dynamics is monitored through the time. Introduction exceptional points in microcavities exceptional point ep point in parameter space at which two or more eigenvalues and eigenstates of a nonhermitian linear. Multidimensional infrared spectroscopy is proposed for monitoring the polaritonassisted cooperative properties. Optical microcavities combined with active emitters provide a great opportunity to study the lightmatter interaction at a fundamental level. Nonlinear photoniccrystal microresonators offer unique fun.
Quochi et al optical gain in strongly pumped sc microcavities 9. Giant optical nonlinearities from rydberg excitons in. Optical measurements of polariton strong coupling in. The resonant modes inside the optical microcavities are modelled analytically by the use of maxwell equations. Fabricationtolerant high quality factor photonic crystal microcavities. In the soliton decay process, the average intracavity energy decays exponentially and its time constant equals the dissipation rate of the cavity. They are the basis of numerous applied and fundamental studies, such as cavity qed, photonics and sensing. Unlike traditional gas lasers, semiconductor lasers are invariably much smaller in dimensions, making optical confinement more critical than ever.
We consider the electromagnetic field propagating with an angular frequency. Semiconducting nanocrystals in openaccess microcavities are promising systems in which enhanced lightmatter interactions lead to quantum effects such as the modulation of the spontaneous emission process and excitonpolariton formation. Optical microcavities with tubular geometry wiley online library. Quantum dot spontaneous emission li fetime modification in. To produce a highquality microcavity, it is necessary to con. An extensive study on the structural engineering of titanium dioxidefunctionalized nanoporous anodic alumina optical microcavities tio2naauqvs for photocatalysis enhanced by light confinement. Sukhdev roy,1,a mohit prasad,1,a juraj topolancik,2,b and frank vollmer2,c. Minimizing energy consumption for signal processing using optical microcavities. Quantum electrodynamics of semiconducting nanomaterials in. This book begins with a chapter on the role of microcavity modes with additional chapters on how these microcavity modes affect the spontaneous and stimulated emission rates, enhance nonlinear optical processes, used in cavityqed and chemical physics experiments, aid in singlemolecule detection, influence the design of microdisk semiconductor lasers, and how deformed cavities can be treated. Their recent demonstration in optical microresonators has provided a new platform for the study of nonlinear optical physics with practical implications for miniaturization of time standards. Tunable resonant optical microcavities by selfassembled. Optomechanically tuned electromagnetically induced transparencylike effect in coupled optical microcavities guanyu li,1 xiaoshun jiang,1,a shiyue hua,1 yingchun qin,1 and min xiao1,2 1national laboratory of solid state microstructures, college of engineering and applied sciences, nanjing university, nanjing 210093, china.
Optical microcavities confine light at resonant frequencies for extended periods of time and fundamentally alter the interaction of light with matter. Fabricationtolerant high quality factor photonic crystal microcavities kartik srinivasan, paul e. Photoinduced transformations in bacteriorhodopsin membrane monitored with optical microcavities juraj topolancik and frank vollmer rowland institute at harvard, harvard university, cambridge, massachusetts abstract photoinduced molecular transformations in a selfassembled bacteriorhodpsin br monolayer are monitored by. Polaritons are a mixture of photons and semiconductor excitons that display different properties from either the.
Imaging soliton dynamics in optical microcavities nature. His book, optical processes in microcavities, with anthony campillo was the. In quantum optical devices, microcavities can coax atoms or quantum dots to emit spontaneous photons in a desired direction or can provide an environment where dissipative mechanisms such as. Minimizing energy consumption for signal processing using. This paper describes the generation and optical characterization of a series of dyedoped dropletbased optical microcavities with continuously decreasing radius in a microfluidic channel. Rolledup optical microcavities with subwavelength wall. Optical processes in microcavities advanced applied. These tubular optical microcavities enable researchers to explore and.
Setup with functionality varying based on method to characterize the energy signatures of the polaritons which have become extremely difficult to detect, as is the cost of using highquality microcavities, we used three different. Optical measurement of polariton strong coupling in. Controlled coupling of semiconductor quantum dots to. Optical processes in microcavities a new generation of optical microresonators is making possible the exploration of quantum electrodynamic phenomena in condensed matter systems and providing microlasers with a wide range of potential applications.
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