Since the second half of the 20th century, ideas to develop methods for the formation of
optical vortices (OVs) or OV beams–regions of circular motion of energy flow in an …

Orbital angular momentum (OAM), one of the most recently discovered degrees of freedom
of light beam field has fundamentally revolutionized optical physics and its technological …

涡旋电磁波, 因携带有轨道角动量(OAM), 从而体现出除了传统的强度, 相位, 频率,
极化等自由度之外的一种新型自由度, 理论上在任意频率下都具有无穷多种互不干扰的正交模态 …

Lens design is of paramount importance in the evolving world of technology, where
compactness and high optical performance are a necessity, ranging from smartphones and …

In this paper we present a new kind of kinoform lenses in which the phase distribution is
characterized by the “devil's staircase” function. The focusing properties of these fractal …

A zone plate lens utilizing a refractive instead of diffractive approach is presented for
broadband operation. By utilizing transformation optics, we compress the conventional …

For many communication systems, including wireless networks, mobile, satellite, radar,
remote sensing, and many more applications, antenna arrays are very necessary. Utilizing …

We report the achievement of the first images to our knowledge obtained with a fractal zone
plates (FraZPs). FraZPs are diffractive lenses characterized by the fractal structure of their …

The intraoral Tongue Drive System (iTDS) is a wireless assistive technology (AT) that may
be operated using a variety of user-defined voluntary tongue motions. In this study, we …

We extend the Dammann encoding concept to more general phase functions, ie, to encode
a phase pattern so that a number of diffracted orders have the same intensity. We …