High resolution amplitude and phase gratings in atom optics

Abstract

An atom-field geometry is chosen in which an atomic beam traverses a field interaction zone consisting of three fields, one having frequency $\Omega =c/\lambda$ propagating in the $\hat{z}$ direction and the other two having frequencies $\Omega +{\delta }_1$ and $\Omega +{\delta }_2$ propagating in the -$\hat{z}$ direction. For $n_1{\delta }_1+n_2{\delta }_2=0$ and $|{\delta }_1|T,|{\delta }_2|T\gg 1$, where $n_1$ and $n_2$ are positive integers and $T$ is the pulse duration in the atomic rest frame, the atom-field interaction results in the creation of atom amplitude and phase gratings having period . In this manner, one can use optical fields having wavelength $\lambda$ to produce atom gratings having periodicity much less than $\lambda$.

11 pages, 14 figures

Cited by in corpus (13)

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• Momentum-space engineering of gaseous Bose-Einstein condensates
• Bloch oscillations of atoms in an optical multiphoton potential
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• Atom gratings produced by large angle atom beam splitters
• Filtered Talbot lens: Producing $\lambda /2n$-periodic atomic patterns with standing wave fields having period $\lambda$
• Sequantial large momentum transfer exploiting rectangular Raman pulses
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