Various optical elements with subwavelength structured surfaces have been developed. The
periods of the subwavelength structures are too short to generate diffracted light waves. But …

We show that under certain conditions one-dimensional dielectric lattice possesses total
omnidirectional reflection of incident light. The predictions are verified experimentally using …

Polarizing beam splitters that use the anisotropic spectral reflectivity (ASR) characteristic of
high-spatial-frequency multilayer binary gratings have been designed, fabricated, and …

Splitting circularly polarized waves is desirable for high‐data‐rate wireless communications
and study of molecular chirality at terahertz frequencies. Typically, this functionality is …

Novel devices for converting a linear polarization state to radial or azimuthal polarization
states are realized by use of space-variant inhomogeneous media on a subwavelength …

The generation of radially polarized beams at a wavelength of 1064 nm by the use of a
polarization transformer device consisting of space-variant subwavelength gratings (SGs) is …

We discuss the design, fabrication and optical performance of a broadband form-birefringent
quarter-wave plate for the 3.5 to 5? m wave-length region. Rigorous coupled wave analysis …

Polarization conversion of terahertz waves is important for applications in imaging and
communications. Conventional wave plates used for polarization conversion are inherently …

We have developed new methods for the fabrication of high quality two-dimensional (2D)
and three-dimensional (3D) photonic crystals. These techniques involve anisotropic etching …

We present a novel configuration for the implementation of subwavelength-based graded-
index devices. The proposed concept is based on the etching of one-dimensional …