Cross-compensation of Zernike aberrations in Gaussian beam optics

Gaussian Beam Optics

In your typical optics lab, most of us, as scientists or engineers, are familiar with geometrical optics, which assumes that the wavelength of the light approaches zero. When constructing a formalism for light propagation and optical analysis, this assumption allows us to ignore any effects resulting from diffraction and greatly simplifies most calculations. This approximation – that the wavele...

Topological phase in Gaussian beam optics.

The evolution of a complex beam width parameter g describing focusing or defocusing of a paraxial Gaussian beam is considered as the cause of an additional topological (Berry) phase of the electromagnetic f ield associated with the beam. It is pointed out that the well-known Gouy phase is a special case of such a phase that should arise in general in all symplectic systems.  1995 Optical Socie...

Compensation of corneal aberrations by the internal optics in the human eye.

The objective was to study the relative contribution of the optical aberrations of the cornea and the internal ocular optics (with the crystalline lens as the main component) to overall aberrations in the human eye. Three sets of wave-front aberration data were independently measured in the eyes of young subjects: for the anterior surface of the cornea, the complete eye, and internal ocular opt...

Beam Optics

Beam-Beam Compensation Schemes

Several techniques have been proposed for compensating the effects of the head-on or long-range beam-beam interaction. These include alternating crossing at several interaction points, electromagnetic wires, electron lenses, and superbunches. I discuss some prominent compensation schemes and their R&D status, with special emphasis on the LHC and its upgrade. 1 HISTORY AND PERSPECTIVE The beam-b...