arXiv subjects

Shuang-Yan Yang

Publications and source records attributed to Shuang-Yan Yang.

2 recordsLinked to original sources

arXiv2016

Degree of diffraction for monochromatic light beams

A parameter, called the degree of diffraction, is defined to describe the diffractive spreading of a monochromatic light beam. The same as the degree of paraxiality that was introduced by Gawhary and Severini in Opt. Lett. 33, 1360 (2008), the degree of diffraction depends only on beam's angular spectrum. With this definition, it is possible to quantitatively compare the diffractive spreading of different light beams.

physics.optics↗

arXiv2011

Characterization of vector diffraction-free beams

It is observed that a constant unit vector denoted by $\mathbf I$ is needed to characterize a complete orthonormal set of vector diffraction-free beams. The previously found diffraction-free beams are shown to be included as special cases. The $\mathbf I$-dependence of the longitudinal component of diffraction-free beams is also discussed.

physics.optics↗