One of the major difficulties in realizing a high-dimensional frequency converter for conventional optical vortex (COV) modes stems from difference ring diameter COV with different topological charge numbers l. Here, we implement perfect (POV) invariant sizes by way four-wave mixing (FWM) process using Bessel–Gaussian beams instead Laguerre–Gaussian beams. The measured conversion efficiency 153...

Modern density-functional methods for the calculation of electronic g-tensors have been implementedwithin the framework of the deMon code. All relevant perturbation operators are included. Particular emphasishas been placed on accurate yet efficient treatment of the two-electron spin-orbit terms. At an all-electronlevel, the computationally inexpensive atomic mean-field approximatio...

Background: The potential toxicity of human exposure was investigated to heavy metals from diverse sources but few or none was on Iranian soaps. Hence, we aimed to determine the presence of lead and mercury in selected soaps commonly used in Mashhad, northeastern Iran. Methods: Different common brands of cosmetic, hygiene and contraband soaps were purchased from retail market of Mashhad in 2...

These are working notes written as a first step in understanding atomic potentials and atomic structure in finite-temperature systems. 1 Thomas-Fermi Theory As a first step, we consider the Thomas-Fermi theory at finite temperatures. This is my version of the discussion of temperature-dependent Thomas-Fermi theory given in the seminal work of Feynman, Metropolis, and Teller [1]. Later, we will ...