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Light passing through subwavelength apertures
This review provides a perspective on the recent developments in the transmission of light through subwavelength apertures in metal films. The main focus is on the phenomenon of extraordinary optical…
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Strong influence of hole shape on extraordinary transmission through periodic arrays of subwavelength holes.
TLDR
It is shown that extraordinary light transmission of periodic subwavelength hole arrays, generally attributed to surface-plasmon resonances, is strongly influenced by the hole shape, and shape resonances of the rectangular holes play a dominant role.
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Real-space observation of ultraslow light in photonic crystal waveguides.
TLDR
The huge trapping times without the use of a cavity reveal new perspectives for dispersion and time control within photonic crystals.
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Loss engineered slow light waveguides.
TLDR
A theoretical model is developed that accurately describes the loss spectra of PhC waveguides and reveals that the entire hole contributes coherently to the scattering process, in contrast to previous models that added up the scattering from short sections incoherently.
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Nanofocusing in laterally tapered plasmonic waveguides.
TLDR
This work demonstrates a practical implementation of plasmonic nanofocusing on a planar substrate when the asymmetric bound mode at the substrate side of the metal film is excited.
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Quasinormal-Mode Expansion of the Scattering Matrix
It is well known that the quasinormal modes (or resonant states) of photonic structures can be associated with the poles of the scattering matrix of the system in the complex-frequency plane. In this…
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λ/4 Resonance of an Optical Monopole Antenna Probed by Single Molecule Fluorescence
We present a resonant optical nanoantenna positioned at the end of a metal-coated glass fiber near-field probe. Antenna resonances, excitation conditions, and field localization are directly probed…
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High definition aperture probes for near-field optical microscopy fabricated by focused ion beam milling
We have improved the optical characteristics of aluminum-coated fiber probes used in near-field scanning optical microscopy by milling with a focused ion beam. This treatment produces a flat-end face…
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Single molecule mapping of the optical field distribution of probes for near‐field microscopy
TLDR
A new method using shear‐force microscopy to study the size of the aperture and the end face of the probe (with a roughness smaller than 1.5 nm) is reported on, and the use of single molecules are demonstrated to measure the full three‐dimensional optical near‐field distribution of the Probe with molecular spatial resolution.
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Role of shape and localized resonances in extraordinary transmission through periodic arrays of subwavelength holes: Experiment and theory
The effect of the aspect ratio of rectangular holes on the transmissivity of periodic arrays of subwavelength holes in optically thick metal films is investigated. The transmissivity is found to be…
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