Microcavities mcs with gain media have drawn much attention due to their significant applications in optoelectric devices, such as low threshold semiconductor lasers,, optical memories and photonic integrated circuit chips. In the remainder of this article, we consider the properties of the graded lattice pc microcavities studied in refs. 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. In particular, the optical properties close to the excitonic transition in the strong coupling regime are addressed and the formalism of exciton polaritons is used. Optical trapping in 1d mesoscopic photonic crystal. 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. Microcavities are wavelengthsized optical cavities that trap light at specific wavelengths. We propose a novel approach in optical trapping exploiting mesoscopic photonic crystal microcavities. Researchers in takasumi tanabes group, at keio university, are working on achieving signal processing with the lowest possible energy consumption by utilizing photonic technologies. 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. Nolte,1,jim hyland,2 and eric harmon2 1department of physics, purdue university, west lafayette, indiana 47907, usa 2lightspin technologies, inc.
Three types of optical resonance modes with mode spacings of 10, 5. Perot microcavities with dielectric mirrors are examples of microresonators with which one can approach this ideal limit and nearly isolate a few modes of the electromagnetic field from the continuum of surrounding free. Devices based on optical microcavities are already indispensable for a wide range of applications and studies. Microscale optical ring resonators could potentially meet many of. Given the sheer diversity of materials, wavelengths, cavity configurations, and applications being investigated, the organised overview provided by dr. Polaritons are a mixture of photons and semiconductor excitons that display different properties from either the. International conference on transparent optical networks icton 2016, italy. Optical resonance modes in gan pyramid microcavities. Bragg holography in active semiconductor microcavities. Enhanced nonlinear optics in photoniccrystal microcavities jorge bravoabad, alejandro rodriguez, peter bermel, steven g.
Optical microcavities are structures that enable confinement of light to microscale volumes. The universal importance of these structures has made them indispensable to a wide range of fields. Towards nonlinear photonics in alloptically poled polymer microcavities r. Wiersma,1 marcello colocci,2 lianhe li,3 marco francardi,4 annamaria gerardino,4 andrea fiore,5 and massimo gurioli1 1lens and department of physics, university of florence. Cavity rotation causes the shifts of the resonant frequencies proportional to the rotation rate if it is larger than a certain value. Eit eliminates a resonant absorption by creating a narrow. Podoliak, nina, takahashi, hiroki, keller, matthias and horak, peter 2016 optimising fibretip microcavities with gaussianshaped mirrors for quantum networks. Optical processes in microcavities pdf download, read optical processes in microcavities file also in epub format, optical processes in microcavities available in other standard ebook format also. Optical processes in microcavities advanced applied physics. Preparation of whisperinggallerymode resonators and fiber tapers a1. The process known as electromagneticallyinducedtransparency eit 1, 2,3,4. The analyses should be both rapid and sensitive to low concentrations of the target compound 4. Optical microcavity is a structure that confines light in three dimensions on wavelength scale. Optimising fibretip microcavities with gaussianshaped.
Nonlinear optical tuning of photonic crystal microcavities by near. Strongly enhanced lightmatter interaction lends microcavity a powerful tool to fundamental science and engineering applications. The universal importance of these structureshas made them indispensable to a wide range of fields. The free spectral range defined as the wavelength spacing between modes with successive angular mode number is 5. Steve blair and yan chen biosensing with optical microcavities, proc. An overview of the theory of the linear optical response of planar semiconductor microcavities with embedded quantum wells is presented. 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.
Optical processes in microcavities advanced applied physics chang, richard k, campillo, a j on. To increase the emission flux and reduce the devices volume, an optimized way is to process the gain media directly to be a resonator as. In the new configuration, a free space pump laser beam illuminates the pillar supporting the microcavity, which warms ups and transfers heat to the microcavity. We study the output from the modes described by the superposition of gaussian beams confined in the quasistadium microcavities. Bragg holography in active semiconductor microcavities h. Linear optical properties of semiconductor microcavities. Theoretical and experimental study of stimulated and. Minimizing energy consumption for signal processing using. The former type is a standing wave cavity, and the latter is a traveling wave cavity.
Ultimate resolution for refractometric sensing with. What is and what is not electromagneticallyinduced. Characterization of highq optical microcavitiesusing confocal microscopy rajan p. 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. Tuning optical microcavities wisconsin alumni research. The simultaneous control of optical and mechanical waves has enabled a range of fundamental and technological breakthroughs, from the demonstration of ultrastable frequency reference devices, to. We experimentally observe the deviation from snells law in the output when the incident angle of the gaussian beam at the cavity interface is near the critical angle for total internal reflection, providing direct experimental evidence on the fresnel filtering. They are the basis of numerous applied and fundamental studies, such as cavity qed, photonics and sensing.
The confinement of light may be achieved via bragg reflection or scattering in micropillar and photoniccrystal cavities, while total internal. Photonic crystal microcavities for chipbased cavity qed. The editors have selected leading scientists who have made seminal contributions in different aspects of optical processes in microcavities. Ultrasmall mode volumes in dielectric 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. 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. This video briefly summarizes my work during the 2015 optics in the city of light reu program in paris. Of all resonant geometries, surface tensioninduced microcavities, such as silica microspheres, exhibit the highest q. The support pillar is made of silicon or other suitable material.
We investigated the whispering gallery modes wgms of cavities with a hexagonal cross section. Optical micro and nanocavities underpin many of the major developments in current photonic science and technology. Nonlinear photoniccrystal microresonators offer unique fun. Optical microcavities are structures that enable confinement of lightto microscale volumes. Mobileereaders download the bookshelf mobile app at or from the itunes or android store to access your ebooks from your mobile device or ereader.
Optical processes in microcavities advanced series in. Enhanced nonlinear optics in photoniccrystal microcavities. The ptsymmetric optical resonator system investigated here is formed by two coupled wgm microtoroids. Brillouin optomechanics in coupled silicon microcavities. Regarding to legality, in some countries it may perfectly legal to download files such as ebooks for personal use only with some.
Optical microcavities confine light to small volumes by resonant recirculation. Characterization of highq optical microcavities using. Below the value, a region of rotation rate exists where there is no resulting the frequency shifts proportional to the. Optical microcavities confine light at resonant frequencies for extended periods of time and fundamentally alter the interaction of light with matter. Stokes soliton in optical microcavities request pdf. The passive lossy microtoroid is made from silica1, whereas the active with gain resonator is made from. Nonlinear optical tuning of photonic crystal microcavities.
Whispering gallery modes in hexagonal microcavities keio. Paritytimesymmetric whisperinggallery microcavities. Analytical development and application of optical microcavities by sarah m. Liquid droplets, polymer spheres and semiconductor fabry. We study theoretically and numerically the effect of rotation on resonant frequencies of microcavities in a rotating frame of reference. 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. This confinement allows photons trapped in the microcavity to strongly interact with matter, creating new quasiparticles called polaritons. We found two different modes, namely, perturbed and quasiwgms, of which the former exhibits a q of greater than 107 when the corner radii are large and 1. 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. Optical resonances in rotating dielectric microcavities of.
The name microcavity stems from the fact that it is often only a few micrometers thick, the spacer. Optical processes in microcavities download pdfepub ebook. The dramatic improvement in factors over single defect microcavities without a significant increase in the mode volume was obtained by introducing a novel. An array of gan hexagonal pyramids with a side length of 8.
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