Direct imaging of periodic subwavelength patterns generated by optical phase masks

Alexei Tonyushkin, Tycho Sleator

    Research output: Contribution to journalArticlepeer-review

    Abstract

    We have demonstrated direct imaging of interference fringes of total atomic density with periods λ/4 and λ/2 for optical wavelength λ that have been produced in a de Broglie wave atom interferometer. The imaging was done by means of an "optical mask" technique, which allowed us to observe subwavelength periodic patterns with a resolution of up to λ/16. In addition, the dependence of the fringe pattern on the recoil phase and pulse area reveals quantum dynamics in the atomic center-of-mass motion. The behavior of the fringe patterns near the interference times distinguishes the effects of phase gratings from those of amplitude gratings.

    Original languageEnglish (US)
    Article number053615
    JournalPhysical Review A - Atomic, Molecular, and Optical Physics
    Volume74
    Issue number5
    DOIs
    StatePublished - 2006

    ASJC Scopus subject areas

    • Atomic and Molecular Physics, and Optics

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