A novel beam-splitter for surface wave-guided atoms or molecules
Ji Xian-Ming, Yin Jian-Ping, (1)光谱学与波谱学教育部重点实验室，华东师范大学物理系，上海 200062; (2)南通大学理学院，南通 226007;光谱学与波谱学教育部重点实验室，华东师范大学物理系，上海 200062
We propose a new scheme to form a surface Y- or X-shaped beam splitter for optically wave-guided atoms (or molecules) and its Mach-Zehnder interferometer by using the combination of a binary π phase plate and a micro-cylindrical lens. The physics idea and basic principle of our beam splitter are introduced, and the analytic relationships between the intensity distribution (or the intensity gradient, or the splitting distance, and splitting-path width) and the parameters of our optical system are derived and discussed. The potential applications of the beam splitter and its experimental feasibility are discussed. Our study shows that the design is novel and the scheme is simple, and it can be used to construct various integrated atom- (or molecule-) optical elements with surface micro-structures, and even to form some all-optically integrated atom (or molecular) chips.
Acta Physica Sinica•Jan 1, 2005•0 citations