Diffraction-contrast imaging of cold atoms
نویسندگان
چکیده
منابع مشابه
Diffraction-contrast imaging of cold atoms
We consider the inverse problem of in-line holography, applied to minimally destructive imaging of cold atom clouds. Absorption imaging near resonance provides a simple, but destructive measurement of atom column density. Imaging off resonance greatly reduces heating, and sequential images may be taken. Under the conditions required for off-resonant imaging, the generally intractable inverse pr...
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We theoretically develop and experimentally demonstrate a holographic method for imaging cold atoms at the diffraction and photon shot noise limits. Aided by a double point source reference field, a simple iterative algorithm robustly removes the twin image of an Rb cold atom sample during the image reconstruction. Shot-noise limited phase shift and absorption images are consistently retrieved ...
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We demonstrate the retrieval of column-density images of cold atoms, using a noninterferometric phase-recovery technique based on a single off-resonant and defocused intensity image. The quantitative column density is retrieved via Fourier inversion and remains robust with respect to detuning and defocus. The technique offers excellent prospects for simple, nondestructive imaging of atoms in ma...
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We demonstrate a new method for nondestructive imaging of laser-cooled atoms. This spatial heterodyne technique forms a phase image by interfering a strong reference laser beam with a weak probe beam that passes through the cold atom cloud. The figure of merit equals or exceeds that of phase-contrast imaging, and the technique can be used over a wider range of spatial scales. We show images of ...
متن کاملTopic area: AOS Holographic imaging of cold atoms
Unlike traditional holography, the image is retrieved by a deconvolution algorithm rather than optical reconstruction (or its digital equivalent). The algorithm is restricted to weakly-absorbing monomorphous objects for which the phase-shift and absorption are proportional to the object column-density. The solution is more numerically stable if the object advances the phase of the incident wave...
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ژورنال
عنوان ژورنال: Physical Review A
سال: 2005
ISSN: 1050-2947,1094-1622
DOI: 10.1103/physreva.72.031403