We propose a novel scheme to guide cold polar molecules on the surface of an insulating substrate (i.e., a chip) using a static electric field generated by the combination of a pair of parallel charged wires and a grounded metal plate. We calculate the spatial distributions of the electric fields from the above charged-wire layout and their Stark potentials for cold CO molecules, and analyze the relationships between the electric field and the parameters of the charged-wire layout. The result shows that this charged-wire scheme can be used to guide cold polar molecules in the weak-field-seeking state and to form various molecule-optical elements, even to realize a single-mode molecular waveguide on a molecule chip under certain conditions.
© 2005 Chinese Optics Letters
(020.0020) Atomic and molecular physics : Atomic and molecular physics
(020.6580) Atomic and molecular physics : Stark effect
(020.7010) Atomic and molecular physics : Laser trapping
(230.7370) Optical devices : Waveguides
Yong Xia, Lianzhong Deng, Jinming Liu, and Jianping Yin, "Electrostatic surface guiding of cold polar molecules with double charged wires," Chin. Opt. Lett. 3, 625-628 (2005)