A Novel Atomic Guiding Using a Blue-Detuned TE₀₁ Mode in Hollow Metallic Waveguides

We propose a novel scheme to guide cold atoms using a blue-detuned TE₀₁ doughnut mode in a hollow metallic waveguide, calculate the electromagnetic field distribution of the TE₀₁ mode in the hollow metallic waveguide, and compare the attenuation characters of the EH₁₁ and TE₀₁ mode in the hollow metallic waveguide. We also calculate the optical potential of the TE₀₁ doughnut mode for two-level ⁸⁵Rb atoms and estimate the photon scattering rate. It is found that when the detuning δ= 300GHz, the photon scattering induced heating can be neglected, and the optical potential (U_max about 570mK) of the TE₀₁ mode is high enough to load cold atoms (120μK) from a standard magneto-optical trap and to guide them in the hollow metallic waveguide, which is a desirable scheme to realize a computer-controlled atom lithography with an arbitrary pattern.