Terahertz (THz) radiation is widely recognized as a non-destructive, label-free, and highly-
sensitive tool for biomedical detections. Nevertheless, its application in precision biomedical …

Imaging with resolutions much below the wavelength λ–now common in the visible spectrum–
remains challenging at lower frequencies, where exponentially decaying evanescent waves …

Optical fiber bundles have been widely used in microendoscopic biomedical imaging,
Raman microscopy, and depth-resolved imaging due to their flexibility, long-distance …

The values of the nonlinear refractive index coefficient for various materials in the terahertz
frequency range exceed the ones in both visible and NIR ranges by several orders of …

The water molecule has millions of rotational transitions in the infrared and terahertz region,
and the resulting absorption features dominate the transmission spectrum of atmospheric …

The spatial resolution of an optical fiber bundle is limited by the size of a mode propagating
in an individual fiber, which can be as small as a single wavelength approximately λ for …

While fiber bundles attract much interest in optics, their resolution is limited by the individual
fiber size, which can be as large as a wavelength λ for common fiber optics materials. In …

In this paper, a new scheme for dual-band terahertz electromagnetically induced
transparency (EIT) is reported using a simple metamaterial structure, whose surface …

Magnification in metamaterial hyperlenses has been demonstrated using curved geometries
or tapered devices, at frequencies ranging from the microwave to the ultraviolet spectrum …

We determine, experimentally and numerically, the electric and magnetic Purcell factors in a
fishnet metamaterial in the frequency range 5–15 GHz by measuring the impedance of a …