This review explores the relationship between physics and communications over the past 125 years. We find that four eras of major change in communications technology can be traced to the corresponding major discoveries of physics that directly influenced the communications industry. The four major eras of physics we explore are electromagnetism, the electron, quantum mechanics, and quantum optics.

The SPEAR 3 light source [1] has two 7.6 m straight sections one of which is available for new insertion devices (ID). By reducing the vertical β y function at the center of the straight from 9.8 m to 1.5 m, the beam size can be decreased from 44 µm to 17 µm to reduce the ID gap, but the ID length may be limited by the increased β y variation in the ID. Alternatively , a " double waist " optics...

The science of x-rays is by now over 125 years old, starting with Wilhelm Röntgen's discovery in 1895, for which Röntgen was awarded the first Nobel Prize Physics. X-rays have fundamentally changed world areas, including medical imaging, security scanners, industrial inspection, materials development, and drugs spectroscopy. X-ray has been so far responsible 25 Prizes Physics, Chemistry, Medici...

The properties of electron round lenses produced by the ponderomotive potential are investigated in geometrical optics. proportional to intensity distribution a focused first-order Bessel or Laguerre-Gaussian beam is exploited produce an lens and third-order spherical aberration corrector. Several formulas for focal length coefficients thin-lens approximation derived set associated light parame...

We present an update on the lattice design of the electron ring of the Jefferson Lab Electron-Ion Collider (JLEIC). The electron and ion collider rings feature a unique figure-8 layout providing optimal conditions for preservation of beam polarization. The rings include two arcs and two intersecting long straight sections containing a low-beta interaction region (IR) with special optics for det...

Here, we describe the "temporal lens" concept that can be used for the focus and magnification of ultrashort electron packets in the time domain. The temporal lenses are created by appropriately synthesizing optical pulses that interact with electrons through the ponderomotive force. With such an arrangement, a temporal lens equation with a form identical to that of conventional light optics is...