Abstract

Abstract

Simulations and experiments demonstrate that inclusion of subwavelength features inside the unit cell of photonic crystal nanobeams and rotation of the photonic crystal unit cell enable separate control over the mode distribution and polarization of light. Implications for quantum and topological photonics will be discussed.

Abstract

We simulate magnetization in Terfenol-D using the anisotropic domain rotation model for a stress-imaging sensor based on Nitrogen Vacancy(NV) centers in diamond. We show that the stress-profile can be reconstructed with high accuracy using NVs and that the error increases non-linearly with NV center depth.

Abstract

We employ nano-scale imaging and spectroscopy techniques to elucidate polariton characteristics as a function of the complex refractive index of the substrate. Although higher-order polariton modes exhibit wavelengths weakly sensitive to the environment, the principal mode strongly depends on the substrate dielectric constant

Abstract

We report on nanoscale carrier distribution and spectroscopy of doped silicon nanowires using terahertz (THz) time-domain nano-spectroscopy technique. We demonstrate the capability of THz-nanoscopy for probing and quantification of the order of doping levels in a single nanowire containing heterogeneously doped sections.

Abstract

We have extracted the dominant or aggregate effects of induced defects’ trap energy and relative density from proton irradiation induced defects in InAs_.9Sb_.1 grown epitaxially on GaSb. This technique allows characterization of defect characteristics in a material that is difficult to measure using traditional methods.