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  1. No Access

    Chapter and Conference Paper

    Observation of vortex phase singularities in stirred Bose-Einstein condensates

    We have observed phase singularities due to vortex excitation in Bose-Einstein condensates. This was done by exciting vortices by stirringa condensate with a laser be-am and then interfering it with an unpertu...

    S. Inouye, A. P. Chikkatur, A. Görlitz, S. Gupta… in Coherence and Quantum Optics VIII (2003)

  2. No Access

    Chapter

    Single Ion Mass Spectrometry at 100 ppt and Beyond

    Using a Penning trap single ion mass spectrometer, our group has measured the atomic masses of 14 isotopes with a fractional accuracy of about 10−10. The masses were extracted from 28 cyclotron frequency ratios o...

    S. Rainville, J. K. Thompson, D. E. Pritchard in Precision Physics of Simple Atomic Systems (2003)

  3. No Access

    Article

    Phase-coherent amplification of atomic matter waves

    Atomic matter waves, like electromagnetic waves, can be focused, reflected, guided and split by currently available passive atom-optical elements. However, the key for many applications of electromagnetic wave...

    S. Inouye, T. Pfau, S. Gupta, A. P. Chikkatur, A. Görlitz, D. E. Pritchard… in Nature (1999)

  4. No Access

    Article

    Bragg spectroscopy and superradiant Rayleigh scattering in a Bose–Einstein condensate

    Two sets of studies concerning the interaction of off-resonant light with a sodium Bose–Einstein condensate are described. In the first set, properties of a Bose–Einstein condensate were studied using Bragg sp...

    J. Stenger, S. Inouye, D.M. Stamper-Kurn, A.P. Chikkatur… in Applied Physics B (1999)

  5. No Access

    Article

    Accurate mass spectrometry of trapped ions

    The Penning trap Ion Cyclotron Resonance (ICR) method we use to weigh atomic masses is reviewed, and our plans for future measurements, new methods, and apparatus improvements are discussed. Our ultimate goal ...

    M. Bradley, F. Palmer, D. Garrison, L. Ilich, S. Rusinkiewicz… in Hyperfine Interactions (1997)

  6. No Access

    Article

    Multiplex velocity selection for precision matter-wave interferometry

    We describe a novel velocity-selection technique for measuring dispersive phase shifts in matter-wave interferometers. Where conventional velocity-selection techniques simply reduce the width of the initial ve...

    T. D. Hammond, D. E. Pritchard, M. S. Chapman, A. Lenef… in Applied Physics B (1995)

  7. No Access

    Article

    Atom optics using microfabricated structures

    We present a novel method for fabricating precisely positioned small openings in thin silicon nitride membranes. Several optical elements for atoms have been constructed, including amplitude diffraction gratin...

    C. R. Ekstrom, D. W. Keith, D. E. Pritchard in Applied Physics B (1992)

  8. No Access

    Article

    Trap** and focusing ground state atoms with static fields

    Possibilities of trap** ground state atoms in static fields are studied. It is shown that it is impossible to trap ground state particles at rest using arbitrary combinations of electric, magnetic, and gravi...

    W. Ketterle, D. E. Pritchard in Applied Physics B (1992)

  9. No Access

    Chapter and Conference Paper

    Optical Pum** in Translation Space

    Perhaps the broadest overall trend in the art of experimental atomic spectroscopy has been the steady development of techniques to obtain more control of the atoms under study. After the discharge was replaced...

    D. E. Pritchard, K. Helmerson, V. S. Bagnato, G. P. Lafyatis… in Laser Spectroscopy VIII (1987)

  10. No Access

    Chapter and Conference Paper

    Laser Spectroscopy of Bound Nane and Related Atomic Physics

    Tunable lasers are revolutionizing liatomic molecular spectroscopy. Their high resolution (anything <0.02 cm−1 = 600 MHz by conventional standards) can resolve the rotational spectra of the heaviest diatomics and...

    D. E. Pritchard, R. Ahmad-Bitar, W. P. Lapatovich in Laser Spectroscopy III (1977)