The efficiency of a thirdorder nonlinear process is improved by four orders of magnitude in ultrahighq silica cavity, opening a new regime of. 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. Devices based on optical microcavities are already indispensable for a wide range of applications and studies. Physics and device applications of optical microcavities. The interaction of two localized optical states in a structure consisting of a system of two coupled vertical microcavities is studied. Tunable resonant optical microcavities by selfassembled. The resonant quality is described by the cavity q factor that is defined as 2. Chois excellent handbook of optical microcavities is particularly timely. Polaritons are a mixture of photons and semiconductor excitons that display different properties from either the. Purcell factor enhanced scattering efficiency in optical microcavities. Cavity rotation causes the shifts of the resonant frequencies proportional to the rotation rate if it is larger than a certain value. Performance of integrated optical microcavities for.
Optical microcavities formed by semiconductor microtubes. Steve blair and yan chen biosensing with optical microcavities, proc. Chaos and multiattractors in fully chaotic 2d microcavity. Optical resonances of a spherical dielectric microcavity. Given the sheer diversity of materials, wavelengths, cavity configurations, and applications being investigated, the organised overview provided by dr. Optical microcavities are structures that enable confinement of lightto microscale volumes. Microcavity nonlinear optics with an organically functionalized. Photonic crystal microcavities in soi waveguides produced. Optical processes in microcavities advanced applied physics chang, richard k, campillo, a j on.
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. Optical microcavities confine light at resonant frequencies for extended periods of time and fundamentally alter the interaction of light with matter. Optically tunable surfaces with trapped particles in. Quantumlimited measurement and information in mesoscopic detectors a. First, silica disks are created by lithography and etching, second, the. May 21, 2001 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. Scattering induced mode splitting in active microcavities is demonstrated.
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. Tunable resonant optical microcavities by selfassembled templating g. An optical microcavity or microresonator is a structure formed by reflecting faces on the two. To efficiently excite the whisperinggallery modes, tapered optical fibers are used and the coupling to ultrahighq modes studied.
Purcell effect in photonic crystal microcavities embedding inasinp quantum wires josep canetferrer,1, luis j. Optical processes in microcavities advanced series in. The editors have selected leading scientists who have made seminal contributions in different aspects of optical processes in microcavities. Aug 14, 2003 optical microcavities confine light to small volumes by resonant recirculation. This confinement allows photons trapped in the microcavity to strongly interact with matter, creating new quasiparticles called polaritons. They are indispensable for a broad range of applications, including longdistance transmission of data, novel laser sources, quantum communications, sensing and biosensing. Abdelsalam school of chemistry, university of southampton, southampton so17 1bj, uk received january 15, 2004.
Mar 21, 2012 minimizing energy consumption for signal processing using optical microcavities. High sensitivity nanoparticle detection using optical. We study theoretically and numerically the effect of rotation on resonant frequencies of microcavities in a rotating frame of reference. Minimizing energy consumption for signal processing using optical microcavities. Ipas optical microcavities put forward photonic devices. Simulations of rolledup optical microcavities using. 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. Optical processes in microcavities advanced applied. The soi photonic structures are produced in a cmos environment using 248 nm duv lithography, where the waveguides as well as the photonic crystals are created in the same step using a single mask. We demonstrate a highly sensitive nanoparticle and virus detection method by using a thermalstabilized reference interferometer in conjunction with an ultrahighq microcavity. In order to have a good visualization for the electric field of resonant modes, a 3d rolledup microcavity was simulated using the rf module of comsol multiphysics software3.
Optical microcavities are structures that enable confinement of light to microscale volumes. So were developing an entirely new fabrication process. This means that the electron and hole pairs which make them up are separated to opposite sides of the thin layers in which they are formed. By building semiconductor microcavities across which we can apply a voltage, polaritons can be polarised. 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.
The mode density inside an optical cavity and its relation to altering the spontaneous emission time is discussed. Handbook of optical microcavities crc press book an optical cavity confines light within its structure and constitutes an integral part of a laser device. This enhancement improves the performance of nonlinear optical devices to such an extent that their corresponding operation powers and switching. This work was completed with the support and funding. Yokoyama optical microcavities are resonators that haveat least onedimension onthe order of a single optical wavelength. Multimode lasing in stadiumshaped cavities which are rigorously known to be fully chaotic is investigated both theoretically and experimentally.
Several of these nonlinear processes themselves lead to the generation of quantum states of. This can make extremely fast electricallycontrolled optical amplifiers as well as spin switches. The optical properties of a system of coupled microcavities and the dispersion relations for the characteristic optical modes of the system are. Theory of transient optical nonlinearities in semiconductor. Optical processes in microcavities advanced applied physics. 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. Purcell effect in photonic crystal microcavities embedding. Analytical development and application of optical microcavities by sarah m.
Stokes soliton in optical microcavities request pdf. Aug 14, 2003 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. Illustration of the process sequence used to fabricate silica toroidal microcavities onachip. Mobileereaders download the bookshelf mobile app at or from the itunes or android store to access your ebooks from your mobile device or ereader. Nonlinear optics in ultrahighq whisperinggallery optical. Jul 27, 2015 this video briefly summarizes my work during the 2015 optics in the city of light reu program in paris. Analytical development and application of optical microcavities. Minimizing energy consumption for signal processing using. Reduction of toroidal cross section is observed to cause a. The frequency shift due to the sagnac effect occurs as a thresholdlike phenomenon for the angular velocity in a rotating microcavity. Brillouin optomechanics in coupled silicon microcavities yovanny a. Despite of very small volume, wgm optical microcavities can store high energy due to the minimum reflection losses inside the cavity. Optically tunable surfaces with trapped particles in microcavities r. The dyefilled optical microcavity confines photons between two highlyreflecting mirrors.
Studies of optical microresonators with dimensions between 0. Nonlinear photoniccrystal microresonators offer unique fun. It is shown that the interaction of two localized optical modes in coupled microcavities cause the modes to split. I articles physics and deviceapplications of optical microcavities h. Optical modes in deformed microcavities do not have good modequantum numbers due to absence of rotational symmetry or nonintegrability of system. 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. First, we discuss a system in which this enhancement has been successfully demonstrated both theoretically and experimentally, namely, a photonic crystal cavity showing optical bistability properties. They are the basis of numerous applied and fundamental studies, such as cavity qed, photonics and sensing. Emission patterns of optical microcavities youtube. 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. Optical mode properties of 2d deformed microcavities.
Nonlinear photoniccrystal microresonators offer unique fundamental ways of enhancing a variety of nonlinear optical processes. This video briefly summarizes my work during the 2015 optics in the city of light reu program in paris. Energy coupling through the small gap in optical microcavities. Below the lasing threshold, quality factor enhancement by optical gain allows resolving, in the wavelengthscanning transmission spectrum, the resonance dips of the split modes which otherwise would not be detected in a passive resonator.
Microcavities are wavelengthsized optical cavities that trap light at specific wavelengths. Of all resonant geometries, surface tensioninduced microcavities, such as silica microspheres, exhibit the highest qfactor to date of. Enhanced nonlinear optics in photoniccrystal microcavities jorge bravoabad, alejandro rodriguez, peter bermel, steven g. Optical micro and nanocavities underpin many of the major developments in current photonic science and technology. Sensitivity is sufficient to resolve shifts caused by binding of individual. Performance of integrated optical microcavities for refractive index and fluorescence sensing. The frequency shift due to the sagnac effect occurs as a thresholdlike phenomenon for the angular velocity in a. The former type is a standing wave cavity, and the latter is a traveling wave cavity. Devices based on optical microcavities are already indispensable for a wide range of appl. The universal importance of these structures has made them indispensable to a wide range of fields. The performance of a novel sensor based on an integrated optical io disk microcavity mc is theoretically studied.
The resonances of a dielectric microsphere morphologydependent resonances mdrs, whispering gallery modes, or quasinormal modes have. Scattering processes in an optical microcavity are investigated for the case of silicon nanocrystals embedded in an ultrahigh q toroid microcavity. Optical trapping in 1d mesoscopic photonic crystal. 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. They can, for example, modify the spatial distribution ofradiation power. For example, the resonant spectrum of a rolledup optical microcavity is well defined by simply tailoring the rolling length before it rolls 2, as shown in fig. 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. Tuning optical microcavities inventors randall goldsmith, kevin heylman since its founding in 1925 as the patenting and licensing organization for the university of wisconsinmadison, warf has been working with business and industry to transform university research into products that benefit society. Photonic crystal microcavities in soi waveguides produced in. Theory of transient optical nonlinearities in semiconductor microcavities. Such a low excitation volume is comparable to that of a confocal optical microscope. N2 the sagnac effect in rotating microcavities is studied theoretically and numerically. Optomechanically tuned electromagnetically induced.
Unlike traditional gas lasers, semiconductor lasers are invariably much smaller in dimensions, making optical confinement more critical than ever. The mc is a resonant waveguide structure in which multiple interference of a guided mode occurs. Ganalgan microcavities for enhancement of non linear. Optical microcavities in condensed matter systems sciencedirect. Offline computer download bookshelf software to your desktop so you can view your ebooks with or without internet access. This book covers the fundamental basis of the optical and image processing techniques by integrating contributions from both optical and digital research communities to solve current application bottlenecks, and give rise to new applications and solutions. Optical properties of a system of two coupled vertical. Ganalgan microcavities for enhancement of non linear optical effects v. The universal importance of these structureshas made them indispensable to a wide range of fields. 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. Brillouin optomechanics in coupled silicon microcavities. In this thesis the nonlinear optical phenomena which can occur in ultrahighq microcavities are investigated. Optical processes in microcavities, world scientific october 2003 pdf.
Below the value, a region of rotation rate exists where there is no resulting the frequency shifts proportional to the. We propose a novel approach in optical trapping exploiting mesoscopic photonic crystal microcavities. Simulations of rolledup optical microcavities using comsol. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. Physics department and research laboratory of electronics, mit, cambridge, ma 029, usa abstract. Optical microcavities confine light to small volumes by resonant recirculation. It is also known that the deformed microcavity has rich physics related to quantum chaos, such as chaosassisted tunnelling, dynamical localization. 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. These structures enable oneto control the optical emission properties of materials placed inside them. Optical microcavities are a class of photonic crystals pcs that confine light to small volumes by resonant recirculation of electromagnetic waves within the pcs structure. Enhanced nonlinear optics in photoniccrystal microcavities. The microcavities are formed by onedimensional photonic crystals in fabryperot structure directly written in the waveguides.
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