58 citations · 369 across the 11 of their papers we have counts for
11 papers
Unscrambling Structured Chirality with Structured Light at Nanoscale Using Photo-induced Force
Mohammad Kamandi, Mohammad Albooyeh, Mehdi Veysi +4
We introduce a microscopy technique that facilitates the prediction of spatial features of chirality of nanoscale samples by exploiting photo-induced optical force exerted on an ac…
Enantio-specific Detection of Chiral Nano-Samples Using Photo-induced Force
Mohammad Kamandi, Mohammad Albooyeh, Caner Guclu +4
We propose a novel high resolution microscopy technique for enantio-specific detection of chiral samples down to sub-100 nm size, based on force measurement. We delve into the diff…
A New Amplification Regime for Traveling Wave Tubes with Third Order Modal Degeneracy
Farshad Yazdi, Mohamed A. K. Othman, Mehdi Veysi +2
Engineering of the eigenmode dispersion of slow-wave structures (SWSs) to achieve desired modal characteristics, is an effective approach to enhance the performance of high power t…
The degenerate band edge laser: a new paradigm for coherent light-matter interaction
Mehdi Veysi, Mohamed A. K. Othman, Alexander Figotin +1
We propose a novel class of lasers based on a fourth order exceptional point of degeneracy (EPD) referred to as the degenerate band edge (DBE). EPDs have been found in Parity-Time-…
Photoinduced Magnetic Nanoprobe Excited by Azimuthally Polarized Vector Beam
Caner Guclu, Mehdi Veysi, Filippo Capolino
The concept of magnetic nanoprobes (or magnetic nanoantennas) providing a magnetic near-field enhancement and vanishing electric field is presented and investigated, together with…
Focused Azimuthally Polarized Vector Beam and Spatial Magnetic Resolution below the Diffraction Limit
Mehdi Veysi, Caner Guclu, Filippo Capolino
An azimuthally electric-polarized vector beam (APB), with a polarization vortex, has a salient feature that it contains a magnetic-dominant region within which electric field ideal…
Low Starting Electron Beam Current in Degenerate Band Edge Oscillators
Mohamed A. K Othman, Mehdi Veysi, Alexander Figotin +1
We propose a new principle of operation in vacuum electron-beam-based oscillators that leads to a low beam current for starting oscillations. The principle is based on super synchr…
Giant Amplification in Degenerate Band Edge Slow-Wave Structures Interacting with an Electron Beam
Mohamed A. K. Othman, Mehdi Veysi, Alexander Figotin +1
We propose a new amplification regime based on synchronous operation of four degenerate electromagnetic (EM) modes in a slow-wave structure and the electron beam, referred to as su…
Generation of Vortex Beams with Strong Longitudinally Polarized Magnetic Field by Using a Metasurface
Mehdi Veysi, Caner Guclu, Filippo Capolino
A novel method of generation and synthesis of azimuthally E-polarized vortex beams is presented. Along the axis of propagation such beams have a strong longitudinally polarized mag…
A thin anisotropic metasurface for simultaneous light focusing and polarization manipulation
Mehdi Veysi, Ozdal Boyraz, Filippo Capolino
The possibility of integration of two important categories of optical components, i.e., circular polarizer and lens, into a thin plasmonic metasurface is examined. After exploring…
Optical Leaky-Wave Antenna Integrated in Ring Resonator
Caner Guclu, Mehdi Veysi, Ozdal Boyraz +1
A leaky-wave antenna at optical frequencies is designed and integrated with a ring resonator at 1550 nm wavelength. The leaky wave is generated by using periodic perturbations in t…