Topological photonics is a rapidly emerging field of research in which geometrical and
topological ideas are exploited to design and control the behavior of light. Drawing …

The recent prediction and subsequent creation of electron vortex beams in a number of
laboratories occurred after almost 20 years had elapsed since the recognition of the physical …

Structured light provides an additional degree of freedom for modern optics and practical
applications. The effective generation of orbital angular momentum (OAM) lasing, especially …

Various concepts related to parity-time symmetry, including anti–parity-time symmetry, have
found broad applications in wave physics. Wave systems are fundamentally described by …

Creating optical components that allow light to propagate in only one direction—that is, that
allow non-reciprocal propagation or 'isolation'of light—is important for a range of …

We review recent progress in inducing and harnessing stimulated Brillouin scattering (SBS)
in integrated photonic circuits. Exciting SBS in a chip-scale device is challenging due to the …

We present a weak measurement protocol that permits a sensitive estimation of angular
rotations based on the concept of weak-value amplification. The shift in the state of a pointer …

We present a space-time generalization of the known spatial (monochromatic) wave vortex
beams carrying intrinsic orbital angular momentum (OAM) along the propagation direction …

Whispering-gallery-mode (WGM) microresonators provide a high-performance platform for
measuring single nanoparticles and viruses, as well as large molecules. However, there is …

In this paper, generation of optical vortices with time-varying orbital angular momentum
(OAM) and topological charge is theoretically demonstrated based on time-modulated …