Sub-optical wavelength atomic gratings generated in a time-domain interferometer

Andrey Turlapov, D. V. Strekalov, A. Kumarakrishnan, S. B. Cahn, A. Karpf, Tycho Sleator

    Research output: Chapter in Book/Report/Conference proceedingChapter

    Abstract

    We have studied sub-optical wavelength atomic gratings generated by the interference of atomic de Broglie waves in a time-domain interferometer. Three short optical standing-wave pulses, detuned from resonance with a cloud of approximately 100 μK 85Rb atoms, act as phase gratings for atomic matter waves. Shortly after the first pulse, a modulation in the atomic density containing spatial harmonics of period λ/2N appears (λ is the optical wavelength, and N is any integer) and then rapidly vanishes due to the atomic thermal motion. The cloud maintains phase memory of this modulation, however, and the second pulse (applied at time T after the first one) results in a temporal sequence of atomic density gratings of periods λ/2N. The appearance of a grating is referred to as an echo. The third pulse (and a subsequent traveling wave pulse) is used to detect these gratings. By this technique, we have created and detected in real time a grating with period λ/4 at time 1.5 T after the first pulse and observed new types of `echoes' caused by interaction of the de Broglie waves with all three phase gratings. This ability to produce sub-wavelength structures makes our techniques applicable to atomic beam lithography.

    Original languageEnglish (US)
    Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
    PublisherSociety of Photo-Optical Instrumentation Engineers
    Pages234-235
    Number of pages2
    Volume3749
    StatePublished - 1999
    EventProceedings of the 1999 18th Congress of the International Commission for Optics (ICO XVIII): Optics for the Next Millennium - San Francisco, CA, USA
    Duration: Aug 2 1999Aug 6 1999

    Other

    OtherProceedings of the 1999 18th Congress of the International Commission for Optics (ICO XVIII): Optics for the Next Millennium
    CitySan Francisco, CA, USA
    Period8/2/998/6/99

    Fingerprint

    Interferometers
    interferometers
    gratings
    Wavelength
    wavelengths
    pulses
    Modulation
    Atomic beams
    Wave interference
    echoes
    modulation
    Lithography
    atomic beams
    standing waves
    traveling waves
    Data storage equipment
    integers
    Atoms
    lithography
    interference

    ASJC Scopus subject areas

    • Electrical and Electronic Engineering
    • Condensed Matter Physics

    Cite this

    Turlapov, A., Strekalov, D. V., Kumarakrishnan, A., Cahn, S. B., Karpf, A., & Sleator, T. (1999). Sub-optical wavelength atomic gratings generated in a time-domain interferometer. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 3749, pp. 234-235). Society of Photo-Optical Instrumentation Engineers.

    Sub-optical wavelength atomic gratings generated in a time-domain interferometer. / Turlapov, Andrey; Strekalov, D. V.; Kumarakrishnan, A.; Cahn, S. B.; Karpf, A.; Sleator, Tycho.

    Proceedings of SPIE - The International Society for Optical Engineering. Vol. 3749 Society of Photo-Optical Instrumentation Engineers, 1999. p. 234-235.

    Research output: Chapter in Book/Report/Conference proceedingChapter

    Turlapov, A, Strekalov, DV, Kumarakrishnan, A, Cahn, SB, Karpf, A & Sleator, T 1999, Sub-optical wavelength atomic gratings generated in a time-domain interferometer. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 3749, Society of Photo-Optical Instrumentation Engineers, pp. 234-235, Proceedings of the 1999 18th Congress of the International Commission for Optics (ICO XVIII): Optics for the Next Millennium, San Francisco, CA, USA, 8/2/99.
    Turlapov A, Strekalov DV, Kumarakrishnan A, Cahn SB, Karpf A, Sleator T. Sub-optical wavelength atomic gratings generated in a time-domain interferometer. In Proceedings of SPIE - The International Society for Optical Engineering. Vol. 3749. Society of Photo-Optical Instrumentation Engineers. 1999. p. 234-235
    Turlapov, Andrey ; Strekalov, D. V. ; Kumarakrishnan, A. ; Cahn, S. B. ; Karpf, A. ; Sleator, Tycho. / Sub-optical wavelength atomic gratings generated in a time-domain interferometer. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 3749 Society of Photo-Optical Instrumentation Engineers, 1999. pp. 234-235
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    AU - Karpf, A.

    AU - Sleator, Tycho

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