Time-of-flight detection of ultra-cold atoms using resonant frequency modulation imaging

K. S. Hardman, P. B. Wigley, P. J. Everitt, P. Manju, C. C.N. Kuhn, N. P. Robins

Research output: Contribution to journalLetterpeer-review

13 Citations (Scopus)


Resonant frequency modulation imaging is used to detect free falling ultra-cold atoms. A theoretical comparison of fluorescence imaging (FI) and frequency modulation imaging (FMI) is made, indicating that for low optical depth clouds, FMI accomplished a higher signal-to-noise ratio under conditions necessary for a 200 μm spatially resolved atom interferometer. A 750 ms time-of-flight measurement reveals near atom shot-noise limited number measurements of2×106 Bose-condensed 87Rb atoms. The detection system is applied to high precision spinor BEC based atom interferometer.

Original languageEnglish
Pages (from-to)2505-2508
Number of pages4
JournalOptics Letters
Issue number11
Publication statusPublished - 1 Jun 2016
Externally publishedYes


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