Brillouin optomechanics in coupled silicon microcavities. The physical origin of the merging of dual cavity modes into a single cavity resonance is. Optical properties from srsosio2 multilayers in planar. Request pdf optical microcavities optical microcavities confine light to small volumes.
Optical switching of polariton density patterns in a. Tunable resonant optical microcavities by selfassembled templating g. Highcontrast alloptical bistable switching in photonic. The universal importance of these structures has made them indispensable to a wide range of fields. Optical processes in microcavities editors richard k. Optical microcavities with volumes approaching a cubic wavelength are being fabricated in a wide variety of condensed matter systems including glasses, semiconductors and organic materials. A lot of phenomena related to polariton switching and propagation recently have been investigated experimentally, such as polarization.
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. Nonlinear photoniccrystal microresonators offer unique fun. The optical properties of a system of coupled microcavities and the dispersion relations for the characteristic optical modes of the system are. 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. Dielectric microcavities, on the other hand, are capable of generating a high qfactor through an extended photon storage time but have a di. Highquality factor optical microcavities using oxide. Optical formalisms developed for luminescent microcavities also remain valid for heat conduction. 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 spontaneous emission are overcome so that quantum entanglement of radiation and matter is possible.
Optical resonant cavities are a fundamental element of onchip integrated optical circuits, serving as amplifiers, filters, and buffers. Until now, multilayers were excited with a source in free space in the superstrate. Arguably, nanophotonics is about the optical properties of these engineered structures, which include quantum dots, wells, and metallic nanocrystals. Devices based on optical microcavities are already indispensable for a wide range of applications and studies. Enhanced nonlinear optics in photoniccrystal microcavities. Overview a whispering gallery mode wgm is a type of electromagnetic wave that travels. Wiederhecker y 1gleb wataghin physics institute, university of campinas, 83859 campinas, sp, brazil the simultaneous control of optical and mechanical waves has enabled a range of fundamental. The wisconsin alumni research foundation warf is seeking commercial partners interested in developing a method for tuning the resonance frequencies of ultrahighquality factor toroidal optical microcavities. Minimizing energy consumption for signal processing using optical microcavities. Brillouin optomechanics in coupled silicon microcavities yovanny a. The former type is a standing wave cavity, and the latter is a traveling wave cavity. The incorporation of silicon excess is obtained through the reducing character of hspecies present in the plasma when h 2 is introduced. A bus waveguide of width t at a distance gw is evanescently coupled to one end of the chain. Chains of coupled square dielectric optical microcavities.
Optical processes in microcavities advanced applied. Optical microcavities are structures that enable confinement of light to microscale volumes. The frequency shift due to the sagnac effect occurs as a thresholdlike phenomenon for the angular velocity in a. Optically tunable surfaces with trapped particles in microcavities r. A special technology focus is given to emerging optofluidic devices which aim to merge microfluidic and optical detection technologies.
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. Handbook of optical microcavities crc press book an optical cavity confines light within its structure and constitutes an integral part of a laser device. Optical microcavities advanced series in applied physics. Tunable optical elements are mostly realized by microelectromechanical systems, which require expensive and complex lithography during processing. Biosensing with optical microcavities spie digital library. Nanoscale lasers with optical microcavities by junseok heo a dissertation submitted in partial fulfillment of the requirements for the degree of doctor of philosophy electrical engineering in the university of michigan 2011 doctoral committee. Unlike traditional gas lasers, semiconductor lasers are invariably much smaller in dimensions, making optical confinement more critical than ever. They are the basis of numerous applied and fundamental studies, such as cavity qed, photonics and sensing. Despite of very small volume, wgm optical microcavities can store high energy due to the minimum reflection losses inside the cavity. Optical microcavities confine light at resonant frequencies for extended periods of time and fundamentally alter the interaction of light with matter. Of all resonant geometries, surface tensioninduced microcavities, such as silica microspheres, exhibit the highest qfactor to date of. Elastomer based electrically tunable, optical microcavities. Using total internal reflection from a dielectric interface or a photonic band gap in a periodic system, these photonic structures do not rely on conventional metalcoated mirrors to confine. Pdf imaging soliton dynamics in optical microcavities.
Tunable resonant optical microcavities by selfassembled. Minimizing energy consumption for signal processing using. Enhanced nonlinear optics in photoniccrystal microcavities jorge bravoabad, alejandro rodriguez, peter bermel, steven g. Optically tunable surfaces with trapped particles in. Optical trapping in 1d mesoscopic photonic crystal. Lasermachined microcavities for simultaneous measurement of hightemperature and highpressure are demonstrated. Analytical development and application of optical microcavities by sarah m. If arcs can combine the advantages of microdisk or microsphere. We propose a novel approach in optical trapping exploiting mesoscopic photonic crystal microcavities. Abdelsalam school of chemistry, university of southampton, southampton so17 1bj, uk received january 15, 2004. Nonlinear optics in ultrahighq whisperinggallery optical.
Highcontrast alloptical bistable switching in photonic crystal microcavities mehmet fatih yanik and shanhui fana ginzton laboratory, stanford university, stanford, california 94305 marin soljac. This enhancement improves the performance of nonlinear optical devices to such an extent that their corresponding operation powers and switching times are suitable for their implementation in realistic ultrafast integrated optical devices. Because they derive from both the wavelike properties of light and the strong interactions within matter these optical properties are a signi. Devices based on optical microcavities are already indispensable for a wide range of appl. Optically tunable microresonator using photoswitchable. Polaritons are a mixture of photons and semiconductor excitons that display different properties from either the. These two cascaded microcavities are an air cavity and a composite cavity including a section of fiber and an air cavity. Optical microcavities confine light at resonant frequencies for extended periods of. Interaction between dual cavity modes in a planar photonic microcavity. Optical properties of a system of two coupled vertical. Optical microcavities are structures that enable confinement of lightto microscale volumes. Nanoantenna microcavity hybrids with highly cooperative.
Of all resonant geometries, surface tensioninduced microcavities. The artificial resonances of dielectric optical microcavities can be used to enhance the detection sensitivity of evanescentwave optical fluorescence biosensors to the binding of a labeled analyte to a biospecific monolayer. The spacer and the optical microcavity have been grown using the same process and consists in sputtering a pure sio 2 99. Optical processes in microparticles and nanostructures.
Towards nonlinear photonics in alloptically poled polymer microcavities r. Optical microcavities confine light to small volumes by resonant recirculation. N2 the sagnac effect in rotating microcavities is studied theoretically and numerically. Optical manipulation and sensing in a microfluidic device. Lasermachined microcavities for simultaneous measurement.
Microcavities are wavelengthsized optical cavities that trap light at specific wavelengths. Using total internal reflection from a dielectric interface or a photonic band gap in a periodic system. It is also known that the deformed microcavity has rich physics related to quantum chaos, such as chaosassisted tunnelling, dynamical localization. The resonant quality is described by the cavity q factor that is defined as 2. Optical processes in microcavities advanced applied physics chang, richard k, campillo, a j on. Energy coupling through the small gap in optical microcavities. Optical mode properties of 2d deformed microcavities. The interaction of two localized optical states in a structure consisting of a system of two coupled vertical microcavities is studied. Analogies between optical propagation and heat diffusion.
Combining plasmonic metals with such microresonators introduces rich. 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. Nonlinear photoniccrystal microresonators offer unique fundamental ways of enhancing a variety of nonlinear optical processes. Optical microcavities combined with active emitters provide a great opportunity to study the lightmatter interaction at a fundamental level. Optical modes in deformed microcavities do not have good modequantum numbers due to absence of rotational symmetry or nonintegrability of system. It is shown that the interaction of two localized optical modes in coupled microcavities cause the modes to split. The universal importance of these structureshas made them indispensable to a wide range of fields. Watson laboratory of applied physics, california institute of technology, pasadena, california 91125, usa. Highquality factor optical microcavities using oxide apertured micropillars. Fabrication of optical microcavities via twophoton. This confinement allows photons trapped in the microcavity to strongly interact with matter, creating new quasiparticles called polaritons. 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. Single nanoparticle detection using optical microcavities. We demonstrate an alternative device based on an electrically tunable microcavity employing a dielectric soft elastomer actuator.