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Neutral Atom Imaging Using a Pulsed Electromagnetic Lens

  • Jamie Ryan Gardner
Book
  • 2.8k Downloads

Part of the Springer Theses book series (Springer Theses)

Table of contents

  1. Front Matter
    Pages i-xvi
  2. Jamie Ryan Gardner
    Pages 1-10
  3. Jamie Ryan Gardner
    Pages 11-18
  4. Jamie Ryan Gardner
    Pages 19-27
  5. Jamie Ryan Gardner
    Pages 29-35
  6. Jamie Ryan Gardner
    Pages 37-46
  7. Jamie Ryan Gardner
    Pages 47-62
  8. Jamie Ryan Gardner
    Pages 63-89
  9. Jamie Ryan Gardner
    Pages 91-107
  10. Jamie Ryan Gardner
    Pages 109-112

About this book

Introduction

This dissertation describes the design, construction, and characterization of a new type of aberration-corrected, neutral-atom lens. Atom beam control plays a crucial role in many different fields, ranging from fundamental physics research and materials science to applied nanotechnology. Despite this, atom-optical elements like lenses and mirrors remain relatively underdeveloped compared to their counterparts in other optics fields. Although aberration correction is addressed quite comprehensively in photon and electron lenses, no credible research efforts have yet produced the same technology for neutral atoms.

This thesis reports on progress towards a neutral atom imaging device that will be useful in a range of applications, including nanofabrication and surface microscopy. It presents a novel technique for improving refractive power and correcting chromatic aberration in atom lenses based on a fundamental paradigm shift from continuous, two-dimensional focusing to a pulsed, three-dimensional approach. Simulations of this system suggest that it will pave the way towards the long-sought goal of true atom imaging on the nanoscale. The thesis describes the construction of a prototype lens, and shows that all of the technological requirements for the proposed system are easily satisfied. Using metastable neon from a supersonic source, the prototype was characterized for three different focal lengths and a diverse range of apertures. Despite some manufacturing imperfections, lower distortion and higher resolution than has been shown in any previous hexapole lens was observed. Comparison with simulations corroborates the underlying theory and encourages further refinement of the process.

Keywords

neutral atom focusing pulsed supersonic beam pulsed electromagnetic hexapole lens atom lithography metastable-atom microscope Zeeman and Paschen-Back effects Stern-Gerlach deflection magnetic mirror

Authors and affiliations

  • Jamie Ryan Gardner
    • 1
  1. 1.Center for Nanoscale Science and Technology, Electron Physics GroupNational Institute of Standards and TechnologyGaithersburgUSA

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