Probing the local density of states near the diffraction limit using nanowaveguide-collected cathode luminescence

@article{Uemura2021ProbingTL,
  title={Probing the local density of states near the diffraction limit using nanowaveguide-collected cathode luminescence},
  author={Yoshinori Uemura and Masaru Irita and Yoshikazu Homma and Mark Sadgrove},
  journal={Physical Review A},
  year={2021}
}
The photonic local density of states (PLDOS) determines the light matter interaction strength in nanophotonic devices. For standard dielectric devices, the PLDOS is fundamentally limited by diffraction, but its precise dependence on the size parameter s of a device can be non-trivial. Here, we measure the PLDOS dependence on the size parameter in a waveguide using a new technique nanowaveguide coupled cathode luminescence (CL). We observe that depending on the position within the waveguide… 

Figures from this paper

References

SHOWING 1-10 OF 31 REFERENCES

Tomographic imaging of the photonic environment of plasmonic nanoparticles

A tomography scheme based on electron microscopy that allows retrieval of the three-dimensional local density of states of plasmonic nanoparticles with nanometre spatial and sub-eV energy resolution is introduced.

Near-Infrared Spectroscopic Cathodoluminescence Imaging Polarimetry on Silicon Photonic Crystal Waveguides

We measure polarization- and wavelength-resolved spectra and spatial emission intensity distributions from silicon photonic crystal waveguides in the near-infrared spectral range using spectroscopic

Electron-beam spectroscopy for nanophotonics

Spatially resolved electron microscopy techniques, such as cathodoluminescence and electron energy-loss spectroscopy can provide high space, energy and time resolutions for the structural and optical characterization of materials; this Review discusses recent progress and future directions in the field of nanophotonics.

Optical manipulation of nanoparticles and biomolecules in sub-wavelength slot waveguides

An approach to optofluidic transport that overcomes limitations, using sub-wavelength liquid-core slot waveguides, and provides the ability to handle extended biomolecules directly.

An electrically excited nanoscale light source with active angular control of the emitted light.

It is shown that this behavior is linked to the selective excitation of the out-of-plane and in-plane dipolar LSP modes of the NP, which is achieved through the lateral position of the tip with respect to the symmetry center of theNP.

Principles of nano-optics

1. Introduction 2. Theoretical foundations 3. Propagation and focusing of optical fields 4. Spatial resolution and position accuracy 5. Nanoscale optical microscopy 6. Near-field optical probes 7.

Highly efficient coupling of photons from nanoemitters into single-mode optical fibers.

Highly efficient coupling of photons from nanoemitters into single-mode optical fibers is demonstrated using tapered fibers and is very promising for nanoparticle sensing and single-photon sources.

Force of light on a two-level atom near an ultrathin optical fiber

We study the force of light on a two-level atom near an ultrathin optical fiber using the mode function method and the Green tensor technique. We show that the total force consists of the

Nanoscale optical tomography with cathodoluminescence spectroscopy.

Cathodoluminescence spectroscopic tomography is introduced to probe optical properties in three dimensions with nanometre-scale spatial and spectral resolution and is used to achieve nanoscale three-dimensional visualization of light-matter interactions by reconstructing a three- dimensional metal-dielectric nanoresonator.