Optical processes in microcavities advanced series in. Enhanced nonlinear optics in photoniccrystal microcavities jorge bravoabad, alejandro rodriguez, peter bermel, steven g. These microsized pyramids are highly efficient microcavities. Optimising fibretip microcavities with gaussianshaped. 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. Optical microcavity is a structure that confines light in three dimensions on wavelength scale. In addition to the benefits of a waferscale geometry, including integration with optical, electrical or mechanical functionality, microtoroids onachip exhibit single mode raman. Tuning optical microcavities wisconsin alumni research. Given the sheer diversity of materials, wavelengths, cavity configurations, and applications being investigated, the organised overview provided by dr. Towards nonlinear photonics in alloptically poled polymer microcavities r. 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.
Brillouin optomechanics in coupled silicon microcavities. Preparation of whisperinggallerymode resonators and fiber tapers a1. Liquid droplets, polymer spheres and semiconductor fabry. Microcavities are wavelengthsized optical cavities that trap light at specific wavelengths. Nonlinear optical tuning of photonic crystal microcavities by near. 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 analyses should be both rapid and sensitive to low concentrations of the target compound 4. 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. Chois excellent handbook of optical microcavities is particularly timely. The universal importance of these structureshas made them indispensable to a wide range of fields. The support pillar is made of silicon or other suitable material. Optical resonance modes in gan pyramid microcavities. Minimizing energy consumption for signal processing using. Linear optical properties of semiconductor microcavities.
Enhanced nonlinear optics in photoniccrystal microcavities. Optical microcavities confine light at resonant frequencies for extended periods of time and fundamentally alter the interaction of light with matter. 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. International conference on transparent optical networks icton 2016, italy. Optical processes in microcavities advanced applied physics chang, richard k, campillo, a j on.
Characterization of highq optical microcavities using. Ultrasmall mode volumes in dielectric optical microcavities. Optical microcavities are structures that enable confinement of lightto microscale volumes. Of all resonant geometries, surface tensioninduced microcavities, such as silica microspheres, exhibit the highest q. Strongly enhanced lightmatter interaction lends microcavity a powerful tool to fundamental science and engineering applications. Microscale optical ring resonators could potentially meet many of. Regarding to legality, in some countries it may perfectly legal to download files such as ebooks for personal use only with some. 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.
The name microcavity stems from the fact that it is often only a few micrometers thick, the spacer. 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. 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. Bragg holography in active semiconductor microcavities h. What is and what is not electromagneticallyinduced. Optical microcavities are structures that enable confinement of light to microscale volumes. The dramatic improvement in factors over single defect microcavities without a significant increase in the mode volume was obtained by introducing a novel.
Tunable resonant optical microcavities by selfassembled. Three types of optical resonance modes with mode spacings of 10, 5. Optical resonances in rotating dielectric microcavities of. Podoliak, nina, takahashi, hiroki, keller, matthias and horak, peter 2016 optimising fibretip microcavities with gaussianshaped mirrors for quantum networks. Photonic crystal microcavities for chipbased cavity qed.
Optical processes in microcavities advanced applied physics. In the remainder of this article, we consider the properties of the graded lattice pc microcavities studied in refs. 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. Theoretical and experimental study of stimulated and. Whispering gallery modes in hexagonal microcavities keio. Ultimate resolution for refractometric sensing with. We study theoretically and numerically the effect of rotation on resonant frequencies of microcavities in a rotating frame of reference. This video briefly summarizes my work during the 2015 optics in the city of light reu program in paris. Cavity rotation causes the shifts of the resonant frequencies proportional to the rotation rate if it is larger than a certain value. Nonlinear photoniccrystal microresonators offer unique fun. 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. 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. They are the basis of numerous applied and fundamental studies, such as cavity qed, photonics and sensing. 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.
Polaritons are a mixture of photons and semiconductor excitons that display different properties from either the. The free spectral range defined as the wavelength spacing between modes with successive angular mode number is 5. We study the output from the modes described by the superposition of gaussian beams confined in the quasistadium microcavities. Mobileereaders download the bookshelf mobile app at or from the itunes or android store to access your ebooks from your mobile device or ereader. Paritytimesymmetric whisperinggallery microcavities. 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. This confinement allows photons trapped in the microcavity to strongly interact with matter, creating new quasiparticles called polaritons.
Bragg holography in active semiconductor microcavities. The confinement of light may be achieved via bragg reflection or scattering in micropillar and photoniccrystal cavities, while total internal. The universal importance of these structures has made them indispensable to a wide range of fields. 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.
An overview of the theory of the linear optical response of planar semiconductor microcavities with embedded quantum wells is presented. Optical micro and nanocavities underpin many of the major developments in current photonic science and technology. We investigated the whispering gallery modes wgms of cavities with a hexagonal cross section. Stokes soliton in optical microcavities request pdf.
Ultrahighq planar microcavities and applications thesis by deniz armani. Optical microcavities confine light to small volumes by resonant recirculation. An array of gan hexagonal pyramids with a side length of 8. Nonlinear optical tuning of 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. 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. The process known as electromagneticallyinducedtransparency eit 1, 2,3,4.
The passive lossy microtoroid is made from silica1, whereas the active with gain resonator is made from. Optical processes in microcavities download pdfepub ebook. The former type is a standing wave cavity, and the latter is a traveling wave cavity. Emission patterns of optical microcavities youtube. Devices based on optical microcavities are already indispensable for a wide range of applications and studies. Eit eliminates a resonant absorption by creating a narrow.
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. 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. 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. Nolte,1,jim hyland,2 and eric harmon2 1department of physics, purdue university, west lafayette, indiana 47907, usa 2lightspin technologies, inc. The editors have selected leading scientists who have made seminal contributions in different aspects of optical processes in microcavities. 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. Brillouin optomechanics in coupled silicon microcavities yovanny a. Optical resonances in rotating dielectric microcavities of deformed shape raktim sarma,1 li ge,2,3 and hui cao1, 1department of applied physics, yale university, new haven, connecticut 065208482, usa 2department of engineering science and physics, college of staten island, cuny, staten island, new york 10314, usa 3the graduate center, cuny, new york, new york.
Below the value, a region of rotation rate exists where there is no resulting the frequency shifts proportional to the. Characterization of highq optical microcavitiesusing confocal microscopy rajan p. The ptsymmetric optical resonator system investigated here is formed by two coupled wgm microtoroids. Fresnel filtering of gaussian beams in microcavities. Optical trapping in 1d mesoscopic photonic crystal. We propose a novel approach in optical trapping exploiting mesoscopic photonic crystal microcavities.
Analytical development and application of optical microcavities by sarah m. Steve blair and yan chen biosensing with optical microcavities, proc. 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. The sidebyside study of nonlinear oscillation in both spherical microcavities and toroid microcavities onachip also allows for comparison of their properties.