Photonic Molecules and Spectral Engineering

Boriskina, Svetlana V.

doi:10.1007/978-1-4419-1744-7_16

Cited by 43 publications

(33 citation statements)

References 136 publications

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“…12.2c) have been proposed [44,45], offering a natural extension to the concept of plasmonic crystals and quasicrystals [46,47]. It should also be noted that this chemical analogy has been previously exploited to study coupling of confined optical states in 'photonic molecules' [48]. In this chapter, I discuss in detail an alternative approach to the plasmonic design that does not cast the problem in the conventional terms of a sequence of scattering events but treats it as continuous energy flow process.…”

Section: Introductionmentioning

confidence: 98%

Plasmonics with a Twist: Taming Optical Tornadoes on the Nanoscale

Boriskina

2013

Challenges and Advances in Computational Chemistry and Physics

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This chapter discusses a hydrodynamics-inspired approach to trap and manipulate light in plasmonic nanostructures, which is based on steering optical powerflow around nano-obstacles. New insights into plasmonic nanofocusing mechanisms are obtained by invoking an analogy of the 'photon fluid' (PF). By proper nanostructure design, PF kinetic energy can be locally increased via convective acceleration and then converted into 'pressure' energy to generate localized areas of high field intensity. In particular, trapped light can be molded into optical vortices -tornado-like areas of circular motion of power flux -connected into transmission-like sequences. In the electromagnetic theory terms, this approach is based on radiationless electromagnetic interference of evanescent fields rather than on interference of propagating waves radiated by the dipoles induced in nanoparticles. The resulting ability to manipulate optical powerflow well beyond the diffraction limit helps to reduce dissipative losses, to increase the amount of energy accumulated within a nanoscale volume, and to activate magnetic response in non-magnetic nanostructures. It also forms a basis for long-range on-chip energy transfer/routing as well as for active nanoscale field modulation and switching. IntroductionNoble-metal nanostructures known for their unique ability to squeeze light into sub-wavelength volumes enable a broad range of fascinating applications in optoelectronics, biomedical research, energy harvesting and conversion [1][2][3][4][5]. Most of these applications -Raman and fluorescence sensing being the most widespread -

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Section: Introductionmentioning

confidence: 98%

Plasmonics with a Twist: Taming Optical Tornadoes on the Nanoscale

Boriskina

2013

Challenges and Advances in Computational Chemistry and Physics

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“…In this article, we investigate coupled L3 cavities, which are a class of 'photonic molecules' [2]. An interesting feature of photonic molecules based on coupled PhC cavities [3]- [7] compared to coupled microdisks [8,9], microspheres [10] or micropillars [11,12] is that they offer considerable design flexibility as regards their geometry.…”

Section: Introductionmentioning

confidence: 99%

Mode structure of coupled L3 photonic crystal cavities

et al. 2011

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Abstract:We investigate the energy splitting, quality factor and polarization of the fundamental modes of coupled L3 photonic crystal cavities. Four different geometries are evaluated theoretically, before experimentally investigating coupling in a direction at 30 • to the line of the cavities. In this geometry, a smooth variation of the energy splitting with the cavity separation is predicted and observed, together with significant differences between the polarizations of the bonding and anti-bonding states. The controlled splitting of the coupled states is potentially useful for applications that require simultaneous resonant enhancement of two transitions. This compares with V = 0.76(λ /n) 3 for an isolated cavity in the same lattice. 20. Three other modes exist between the + − 1 and − − 2 modes. Unfortunately, the close spacings and low quality factors of these other modes [18] make it impractical to identify their peaks unambiguosly in Fig. 3. It is, however, likely that the predicted 1.5 meV splitting of the + + 1 mode is responsible for the most prominent features; the predicted splittings of the other two modes are insufficient to explain the peak around 1.32 eV. 21. Note that the results for the FDTD simluations become inaccurate for the largest cavity separation, since the intensity above the center of the double cavity becomes very low. 22. E. Gallardo, L. J. Martínez, A. K. Nowak, H. P. van der Meulen, J. M. Calleja, C. Tejedor, I. Prieto, D. Granados, A. G. Taboada, J. M. García, and P. A. Postigo, "Emission polarization control in semiconductor quantum dots coupled to a photonic crystal microcavity," Opt. Express 18, 13301-13308 (2010).

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“…Optical nanocavities in dielectric or semiconductor materials are outstanding devices in this context: photons can be efficiently stored provided their quality factor is high enough, and sub-wavelength confinement can be easily achieved in high refractive index materials. Coupled nanocavities, also called photonic molecules [1], are a rapidly evolving field with potential applications in laser optimization [2], delay lines [3], dynamic control [4], optical equivalent of EIT [5], as well as a testbed for the exploration of advanced physical (quantum) regimes. Among the diversity of possible geometries, Photonic Crystal (PhC) nanocavities enable a substantial versatility in the choice of design parameters.…”

Section: Introductionmentioning

confidence: 99%

Coupling control in photonic crystal molecules

Yacomotti

Haddadi

Levenson

2013

2013 15th International Conference on Transparent Optical Networks (ICTON)

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We experimentally show that the mode splitting in two-evanescently coupled Photonic Crystal L3 cavities (three holes missing in the K direction of the underlying triangular lattice) can be controlled through barrier engineering. The "potential barrier" is formed by the air-holes in between the two cavities. By changing the hole radius of the central row in the barrier up to ~30%, the frequency splitting can be strongly reduced. Moreover, the sign of the splitting can be reversed in such a way that the fundamental mode can be either the symmetric or the anti-symmetric one without altering neither the cavity geometry nor the inter-cavity distance.

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Photonic Molecules and Spectral Engineering

Cited by 43 publications

References 136 publications

Plasmonics with a Twist: Taming Optical Tornadoes on the Nanoscale

Plasmonics with a Twist: Taming Optical Tornadoes on the Nanoscale

Mode structure of coupled L3 photonic crystal cavities

Coupling control in photonic crystal molecules

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