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Field Expulsion and Reconfiguration in Polaritonic Photonic Crystals
Field Expulsion Polaritonic Photonic Crystals
2015/8/11
We uncover a rich set of optical phenomena stemming from the incorporation of polar materials
exhibiting transverse phonon polariton excitations into a photonic crystal structure. We identify in the
...
Phonon-polariton excitations in photonic crystals
Phonon-polariton excitations photonic crystals
2015/8/11
Moreover, when the fundamental resonances of the pocouple to produce a band in which the localized field varies continuously between two distinct nodal patterns,in an exceedingly small frequency...
Mechanically switchable photonic crystal filter with either all-pass transmission or flat-top reflection characteristics
Mechanically switchable photonic crystal filter either all-pass transmission flat-top reflection characteristics
2015/8/11
We theoretically introduce a new type of optical all-pass filter based on guided resonance in coupled photonic crystal slabs. The filter exhibits near-complete transmission for both on- and off-resona...
High-contrast all-optical bistable switching in photonic crystal microcavities
all-optical bistable switching photonic crystal microcavities
2015/8/11
We present a bistable photonic crystal configuration consisting of a waveguide sided coupled to a single-mode cavity with instantaneous Kerr nonlinearity. We show that such a configuration...
Bends and splitters for self-collimated beams in photonic crystals
Bends splitters self-collimated beams photonic crystals
2015/8/11
We present finite-difference time-domain studies for self-collimated beams in photonic crystal structures. Using a pulse propagation technique that eliminates the interference from the boundary ...
All-optical transistor action with bistable switching in a photonic crystal cross-waveguide geometry
All-optical transistor action bistable switching photonic crystal cross-waveguide geometry
2015/8/11
We demonstrate all-optical switching action in a nonlinear photonic crystal cross-waveguide geometry with instantaneous Kerr nonlinearity, in which the transmission of a signal can be reversibly switc...
Analysis of guided resonances in photonic crystal slabs
guided resonances photonic crystal slabs
2015/8/11
We present a three-dimensional analysis of guided resonances in photonic crystal slab structures that leads to a new understanding of the complex spectral properties of such systems. Specificall...
Photonic-crystal slow-light enhancement of nonlinear phase sensitivity
Photonic-crystal nonlinear phase sensitivity
2015/8/11
We demonstrate how slow group velocities of light, which are readily achievable in photonic-crystal systems,can dramatically increase the induced phase shifts caused by small changes in the index of r...
Multipole-cancellation mechanism for high-Q cavities in the absence of a complete photonic band gap
Multipole-cancellation mechanism high-Q cavities complete photonic band gap
2015/8/12
We describe and demonstrate a new mechanism for low radiation losses in structures lacking a complete band gap, and show how resonant cavities with Q.103 can be achieved without sacrificing stro...
We present a formalism to describe transitions between photon modes in a photonic crystal with a temporally and spatially varying dielectric constant, in analogy to optical transitions between electro...
Photonic band-gap waveguide microcavities:Monorails and air bridges
Photonic band-gap waveguide microcavities Monorails air bridges
2015/8/12
Photonic band-gap monorail and air-bridge waveguide microcavities, operating at the wavelength regime of 1550 nm, are fabricated using GaAs-based compound semiconductors. The fabrication process invol...
One-Dimensional Photonic Bandgap Microcavities for Strong Optical Confinement in GaAs and GaAs/Al O Semiconductor Waveguides
Gallium alloys nanotechnology optical waveguide fi lters
2015/8/12
Photonic bandgap (PBG) waveguide microcavities with tightly confined resonant optical modes have been designed,fabricated using high-dielectric-contrast GaAs/AlxOy III–V compound semiconductor s...
Near-field scanning optical microscopy as a simultaneous probe of fields and band structure of photonic crystals:A computational study
scanning optical microscopy band structure photonic crystals computational study
2015/8/12
We demonstrate the feasibility of employing near-field scanning optical microscopy ~NSOM!imaging to simultaneously obtain both the eigenfield distribution and the band-structure informatio...
Absorbing Boundary Conditions for FDTD Simulations of Photonic Crystal Waveguides
Absorbing Boundary Conditions FDTD Simulations Photonic Crystal Waveguides
2015/8/12
We present a novel numerical scheme for the reduction of spurious reflections in simulations of electromagnetic wave propagation in photonic crystal waveguides. We use a distributed Bragg re@...
High Transmission through Sharp Bends in Photonic Crystal Waveguides
High Transmission Sharp Bends Photonic Crystal Waveguides
2015/8/12
We demonstrate highly efficient transmission of light around sharp corners in photonic bandgap waveguides. Numerical simulations reveal complete transmission at certain frequencies, and very hig...