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  • Atomic and molecular processes in external fields, including interactions with strong fields and short pulses  (4)
  • 42.50.Vk  (1)
  • American Physical Society (APS)  (4)
  • Springer  (1)
  • National Academy of Sciences
  • 1
    Electronic Resource
    Electronic Resource
    Imaging and focusing of an atomic beam with a large period standing light wave (1992)
    Springer
    Applied physics 54 (1992), S. 375-379 
    Details
    ISSN: 1432-0649
    Keywords: 32.80.−t ; 42.50.Vk ; 07.77.+P
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A novel atomic lens scheme is reported. A cylindrical lens potential was created by a large period (⋍ 45 μm) standing light wave perpendicular to a beam of metastable He atoms. The lens aperture (25 μm) was centered in one antinode of the standing wave; the laser frequency was nearly resonant with the atomic transition 23 S 1−23 P 2 (λ=1.083 μm) and the interaction time was significantly shorter than the spontaneous lifetime (100 ns) of the excited state. The thickness of the lens was given by the laser beam waist (40 μm) in the direction of the atomic beam. Preliminary results are presented, where an atomic beam is focused down to a spot size of 4 μm. Also, a microfabricated grating with a period of 8 μm was imaged. We discuss the principle limitations of the spatial resolution of the lens given by spherical and chromatic aberrations as well as by diffraction. The fact that this lens is very thin offers new perspectives for deep focusing into the nm range.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00325383
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    Paper (German National Licenses)
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  • 2
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    Rydberg polaritons in a thermal vapor (2016)
    American Physical Society (APS)
    Details
    Publication Date: 2016-06-01
    Description: Author(s): Fabian Ripka, Yi-Hsin Chen, Robert Löw, and Tilman Pfau We present a pulsed four-wave mixing scheme via a Rydberg state to create, store, and retrieve collective Rydberg polaritons. The storage medium consists of a gas of thermal Rb atoms confined in a 220 − μ m -thick cell, which is heated above room temperature. The experimental sequence consists of a puls… [Phys. Rev. A 93, 053429] Published Tue May 31, 2016
    Keywords: Atomic and molecular processes in external fields, including interactions with strong fields and short pulses
    Print ISSN: 1050-2947
    Electronic ISSN: 1094-1622
    Topics: Physics
    Published by American Physical Society (APS)
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  • 3
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    Photoassociation of spin-polarized chromium (2016)
    American Physical Society (APS)
    Details
    Publication Date: 2016-03-01
    Description: Author(s): Jahn Rührig, Tobias Bäuerle, Paul S. Julienne, Eite Tiesinga, and Tilman Pfau We report the homonuclear photoassociation (PA) of ultracold Cr 52 atoms in an optical dipole trap. This constitutes the measurement of PA in an element with total electron spin S ̃ 〉 1 . Although Cr, with its S 3 7 ground and P 4 , 3 , 2 7 excited states, is expected to have a complicated PA spectrum we show… [Phys. Rev. A 93, 021406(R)] Published Mon Feb 29, 2016
    Keywords: Atomic and molecular processes in external fields, including interactions with strong fields and short pulses
    Print ISSN: 1050-2947
    Electronic ISSN: 1094-1622
    Topics: Physics
    Published by American Physical Society (APS)
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  • 4
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    Efficient demagnetization cooling of atoms and its limits (2014)
    American Physical Society (APS)
    Details
    Publication Date: 2014-04-18
    Description: Author(s): Valentin V. Volchkov, Jahn Rührig, Tilman Pfau, and Axel Griesmaier Demagnetization cooling relies on spin-orbit coupling that brings motional and spin degrees of freedom into thermal equilibrium. In the case of a gas, one has the advantage that the spin degree of freedom can be cooled very efficiently using optical pumping. We investigate demagnetization cooling of... [Phys. Rev. A 89, 043417] Published Thu Apr 17, 2014
    Keywords: Atomic and molecular processes in external fields, including interactions with strong fields and short pulses
    Print ISSN: 1050-2947
    Electronic ISSN: 1094-1622
    Topics: Physics
    Published by American Physical Society (APS)
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  • 5
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    Room-temperature Rydberg single-photon source (2013)
    American Physical Society (APS)
    Details
    Publication Date: 2013-05-25
    Description: Author(s): M. M. Müller, A. Kölle, R. Löw, T. Pfau, T. Calarco, and S. Montangero We present an optimal protocol to implement a room-temperature Rydberg single-photon source within an experimental setup based on micro cells filled with thermal vapor. The optimization of a pulsed four wave mixing scheme allows us to double the effective Rydberg blockade radius as compared to a sim... [Phys. Rev. A 87, 053412] Published Fri May 24, 2013
    Keywords: Atomic and molecular processes in external fields, including interactions with strong fields and short pulses
    Print ISSN: 1050-2947
    Electronic ISSN: 1094-1622
    Topics: Physics
    Published by American Physical Society (APS)
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