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Number-resolved imaging of excited-state atoms using a scanning autoionization microscope.

Lochead, G. and Boddy, D. and Sadler, D.P. and Adams, C.S. and Jones, M.P.A. (2013) 'Number-resolved imaging of excited-state atoms using a scanning autoionization microscope.', Physical review A : atomic, molecular and optical physics., 87 (5). 053409.


We report on a scanning microscopy technique for atom-number-resolved imaging of excited-state atoms. A tightly focused laser beam leads to local autoionization and the resulting ions are counted electronically. Scanning the beam across the cloud builds up an image of the density distribution of excited atoms, with access to the full counting statistics at each spatial sampling point and an overall detection efficiency of 21% . We apply this technique to the measurement of a spatially inhomogeneous electric field with a spatial resolution of 50 μ m and a sensitivity to electric-field gradients of 0.04 V cm −2 .

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Publisher statement:Reprinted with permission from the American Physical Society: G. Lochead, D. Boddy, D. P. Sadler, C. S. Adams, and M. P. A. Jones, Physical review A: atomic, molecular and optical physics, 87, 5, 053409, 2013. © 2013 by American Physical Society. Readers may view, browse, and/or download material for temporary copying purposes only, provided these uses are for noncommercial personal purposes. Except as provided by law, this material may not be further reproduced, distributed, transmitted, modified, adapted, performed, displayed, published, or sold in whole or part, without prior written permission from the American Physical Society.
Date accepted:No date available
Date deposited:21 May 2014
Date of first online publication:May 2013
Date first made open access:No date available

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