The ABCD law of parameter q for fundamental-mode Gaussian beam is deduced in this paper. The result shows that the chang......

We propose some new schemes to constitute two-dimensional (2D) array of multi-well optical dipole traps for cold atoms (......

A photon sieve can be composed of a large number of circular pinholes. Each circular pinhole has a contribution to the f......

A reflecting ring focusing system for laser propulsion has been designed. A paraboloidal reflector of higher order is co......