We employ a weak measurement approach to demonstrate the very existence of the photoexcited interband superposition states in intrinsic graphene. We propose an optical two-beam setup where such measurements are possible and derive an explicit formula for the differential optical absorption that contains a signature of such states. We provide an interpretation of our results in terms of a non-Ma...

Electromagnetic metasurface technology is one of the most promising technologies for electromagnetic energy regulation. It formed by an artificial periodic structure discrete subwavelengths at interface, allowing wavefront control and polarization subwavelength scale, exhibiting a variety special response capabilities, including abnormal beam bending, transformation, wave absorption, etc. We pr...

We study the absorption of an intense electromagnetic wave in a plasma by inverse bremsstrahlung, in the relativistic quantum regime, by using the Klein-Gordon (KG) equation. We examine the following points: (1) the solutions of the KG equation in the absence of collisions; (2) the transition probabilities between electron momentum states, and (3) the effective collision frequency in the weak a...

In the past few years, radio frequency (RF) devices, which are usually used in the vicinity of a human body, are increasing. The health effects of the electromagnetic (EM) waves from RF devices on the human body are dependent on the frequency and strength of the waves. The absorbed RF EM energy mainly contributes to tissue heating. The specific absorption rate (SAR) has been used as the standar...

Solving aero-acoustic or electromagnetic wave-dominated problems often requires finding accurate infinite domain solutions on a finite computational domain. One way of accomplishing this is to formulate absorbing boundary conditions through the technique of perfectly matched layers (PML). We discuss recent developments of PML methods for the absorption of acoustic waves in homogeneous mean flow...

An influence of nonlinear interference processes at quantum transitions under strong resonance electromagnetic fields on absorption, amplification and refractive indices as well as on four-wave mixing processes is investigated. Doppler broadening of the coupled transitions, incoherent excitation, relaxation processes, as well as power saturation processes associated with the coupled levels are ...

We compute the third-order correction to electromagnetic S-wave quarkonium production and annihilation rates due to the emission and absorption of an ultrasoft gluon. Our result completes the analysis of the non-relativistic quarkonium bound-state dynamics in the next-to-next-to-next-to-leading order. The impact of the ultrasoft correction on the Υ(1S) leptonic width and the top quark-antiquark...

The S-matrix algorithm for the propagation of an electromagnetic wave through planar stratified media has been implemented in a modern object-oriented programming language. This implementation is suitable for the study of such applications as the Anderson localization of light and super-resolution (perfect lensing). For our open-source code to be as useful as possible to the scientific communit...

Temperature sensitivity of the fluorescence intensity of the organic dyes solutions was used for noncontact measurement of the electromagnetic millimeter wave absorption in water. By using two different dyes with opposite temperature effects, local temperature increase in the capillary that is placed inside a rectangular waveguide in which millimeter waves propagate was defined. The application...

The electromagnetic wave ranging from the millimeter wave to gamma ray is radiated from plasmas produced by irradiating solid and gas targets with high intensity optical pulses. Recently, several theoretical works have pointed out the possibility that laser produced plasmas radiate intense THz wave [1]. The laser produced plasma is one of the promising candidates for an efficient generator of t...