Direct imaging of periodic subwavelength patterns generated by optical phase masks

Alexei Tonyushkin; Tycho Sleator

doi:10.1103/PhysRevA.74.053615

Direct imaging of periodic subwavelength patterns generated by optical phase masks

Alexei Tonyushkin, Tycho Sleator

Research output: Contribution to journal › Article › peer-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 language	English (US)
Article number	053615
Journal	Physical Review A - Atomic, Molecular, and Optical Physics
Volume	74
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevA.74.053615
State	Published - 2006

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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10.1103/PhysRevA.74.053615

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author = "Alexei Tonyushkin and Tycho Sleator",

year = "2006",

doi = "10.1103/PhysRevA.74.053615",

language = "English (US)",

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journal = "Physical Review A",

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AB - 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.

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Direct imaging of periodic subwavelength patterns generated by optical phase masks

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