Photonic atoms and molecules

Rakovich, Yury P.; Donegan, John F.

doi:10.1002/lpor.200910001

Cited by 94 publications

(73 citation statements)

References 90 publications

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“…Lasing in the spheres could be achieved by pumping the array with a supercontinuum source, as recently demonstrated by Lipson and coworkers [170], and the output channel could be selected by a microelectromechanical switch or similar. Other detailed reviews of microspheres as photonic tools, which cover some the topics and papers that were missed by this review, have also been published recently [6][7][8].…”

Section: Discussionmentioning

confidence: 99%

“…Figure 1 shows some of the most popular types of WGR used in research today. Review papers focusing in detail on the optical properties of WGMs can be found in references [6][7][8]. [17].…”

Section: Introduction and Brief Historical Backgroundmentioning

confidence: 99%

“…High-quality optical WGRs are typically tens of micrometers in diameter but can range to millimeters. Polymer materials have also been used to form microsphere resonators [8][9][10] but they will be discussed only briefly in this review. The need for smaller WGRs is driven by the desire to excite only whispering-gallery modes with high spatial confinement, smaller cavities also have lower mode densities but higher optical finesse.…”

Section: Introduction and Brief Historical Backgroundmentioning

confidence: 99%

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WGM microresonators: sensing, lasing and fundamental optics with microspheres

Ward

Benson

2011

Laser & Photonics Reviews

296

197

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Glass microsphere resonators that support optical resonances known as whispering-gallery modes are unique tools for studying and exploiting optical effects under extremely well controlled conditions. In this paper, a review focusing mostly on glass microsphere resonators is presented. First, a brief historical background is given in which is shown how the stateof-the-art has grown from novel optical resonators to the ultrahigh Q cavities used in cutting-edge experiments. After the basic properties of microsphere resonators are outlined some of the recent experiments involving microsphere resonators are discussed, although some discussion involving polymeric microspheres is also included. The use of doped and undoped microspheres in optical signal processing, optical sensing and quantum optics is highlighted. Finally, there is a brief review of recent optomechanical experiments that use microspheres.

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Section: Discussionmentioning

confidence: 99%

“…Figure 1 shows some of the most popular types of WGR used in research today. Review papers focusing in detail on the optical properties of WGMs can be found in references [6][7][8]. [17].…”

Section: Introduction and Brief Historical Backgroundmentioning

confidence: 99%

Section: Introduction and Brief Historical Backgroundmentioning

confidence: 99%

See 1 more Smart Citation

WGM microresonators: sensing, lasing and fundamental optics with microspheres

Ward

Benson

2011

Laser & Photonics Reviews

296

197

View full text Add to dashboard Cite

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“…[13] Optical mode interaction in coupled cavities is an analog to the electron states in a chemical molecule. [14] Thus this kind of system is usually called as "photonic molecule." The coherent coupling of optical resonant modes and the resultant hybridization effect have been widely investigated both theoretically and experimen tally in photonic molecules consisting of two coupled optical microcavities with identical or closely matched sizes, [15][16][17] where the evanescent field at the cavity surface plays a key mode intensity, resonant mode shift, quality (Q) factor, and mode splitting were demonstrated owing to the hybridized resonances in the couple cavities which appear periodically depending on the mismatched cavitysizes.…”

Section: Introductionmentioning

confidence: 99%

Strong Coupling in a Photonic Molecule Formed by Trapping a Microsphere in a Microtube Cavity

Wang

Yin

et al. 2017

Advanced Optical Materials

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role for the efficient intercavity coupling. However, the evanescent field is relatively weak in the reported photonic mole cules because most of the optical field is strongly confined within the coupled cavities (e.g., microdisks, [4,8,11,18] micro toroids, [19] microspheres, [3] microrods, [5,20] and microfibers [7] ). As such, one needs a deliberate control on both the cavity geometries and the intercavity coupling gap to ensure a good spectral match and efficient evanescent coupling between the coupled cavities. [18] Moreover, dynamic tuning of the intercavity coupling strength has been investigated in recent years, which were carried out by advanced and sophisticated techniques such as strain tuning, [21,22] acoustooptic control, [23] and precise micromanipulation techniques. [3] To extend and promote the research in the field of photonic molecules, it is of high interest to design novel photonic molecules extending from adjacent solid microcavities to thinwalled hollow cavities which possess intense evanescent field facilitating intercavity coupling and provide novel strategy for tuning of the coupling strength.Microtube cavities, which are formed by selfrolling of pre strained nanomembranes, feature unique properties such as hollowcore structures and ultrathin cavity walls (≈100-300 nm) for the study of lightmatter interactions and the integration of "labinatube" systems. [24][25][26][27] These key merits enable extensive applications ranging from optofluidic sensing, [28][29][30][31] single cell analysis, [32] dynamic molecular process detection, [33] photon plasmon coupling, [34] to optical spin-orbit coupling.[35] To combine with other media/objects, luminescent quantum dots, [36,37] quantum wells, [38] and organic molecules [39] have been enwrapped into the microtube wall by the rolling up process, which couple photoluminescence (PL) light to the microtube cavities to support whisperinggallery mode (WGM) resonances. [37,40] In this context, a design and demonstration of photonic molecule based on microtube cavity is of fundamental interest for the study of strong optical coupling and the promo tion of its potential applications.Herein, we report a novel design of photonic molecule by trapping a microsphere cavity into the hollow core of a rolled up microtube cavity. We focus on studying the WGM coupling between the trapped microsphere and microtube cavity with a significant difference of cavity sizes, which is in contrast to pre vious reports where the two externally adjacent microcavities possess highly similar sizes [11,12,41] or slightly mismatched sizes (less than two times). [4][5][6][7]18,[42][43][44] Periodic modulations on A photonic molecule formed by trapping a microsphere cavity into a hollow microtube cavity is demonstrated, which provides a novel design over conventional photonic molecules comprised of solid-core whispering gallery mode microcavities with externally tangent configuration. Periodic spectral modulations of mode intensity, resonant mode shift, and quality factor are observed...

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“…Whispering-gallery-mode (WGM) microsphere resonators can have extremely high Q factors (>10 8 ) and are therefore attractive for development of a variety of photonics devices such as miniature lasers, single-photon emitters, sensors and, as templates, for fundamental studies of light-matter interaction [2,3]. Here we report on tunable laser emission from silica microspheres coated with CdSe/CdS core/shell nanorods whose lasing thresholds and modality are controllable by the pump coupling conditions.…”

Section: Introductionmentioning

confidence: 99%