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Fabrication of nano-structural arrays by channeling pulsed atomic beams through an intensity-modulated optical standing wave with a time-varying atom focal length
We show that it is feasible to produce one- and two-dimensional nano-structure arrays by passing a pulsed atomic beam through an intensity-modulated continuous-wave (cw) laser standing wave that has a time-varying atom focal length and thus achieves the effect of ''cooling'' along the longitudinal direction. This enables fabrication of vertically heterogeneous nano-structures with single-wavelength laser standing wave(s).