Search Results - "Thomsen, Jan W"

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    Collectively enhanced Ramsey readout by cavity sub- to superradiant transition by Bohr, Eliot A., Kristensen, Sofus L., Hotter, Christoph, Schäffer, Stefan A., Robinson-Tait, Julian, Thomsen, Jan W., Zelevinsky, Tanya, Ritsch, Helmut, Müller, Jörg H.

    Published in Nature communications (05-02-2024)
    “…When an inverted ensemble of atoms is tightly packed on the scale of its emission wavelength or when the atoms are collectively strongly coupled to a single…”
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    Journal Article
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    Observation of motion-dependent nonlinear dispersion with narrow-linewidth atoms in an optical cavity by Westergaard, Philip G, Christensen, Bjarke T R, Tieri, David, Matin, Rastin, Cooper, John, Holland, Murray, Ye, Jun, Thomsen, Jan W

    Published in Physical review letters (06-03-2015)
    “…As an alternative to state-of-the-art laser frequency stabilization using ultrastable cavities, it has been proposed to exploit the nonlinear effects from…”
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    Compact, CO2-stabilized tuneable laser at 2.05 microns by Westergaard, Philip G, Thomsen, Jan W, Henriksen, Martin R, Michieletto, Mattia, Triches, Marco, Lyngsø, Jens K, Hald, Jan

    Published in Optics express (07-03-2016)
    “…We demonstrate a compact fibre-based laser system at 2.05 microns stabilized to a CO2 transition using frequency modulation spectroscopy of a gas-filled…”
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    Cavity-immune spectral features in the pulsed superradiant crossover regime by Tang, Mikkel, Schäffer, Stefan A., Jørgensen, Asbjørn A., Henriksen, Martin R., Christensen, Bjarke T. R., Müller, Jörg H., Thomsen, Jan W.

    Published in Physical review research (01-09-2021)
    “…Lasing in the bad cavity regime has promising applications in precision metrology due to the reduced sensitivity to cavity noise originating from cavity length…”
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  5. 5

    Compact, CO 2 -stabilized tuneable laser at 2.05 microns by Westergaard, Philip G, Thomsen, Jan W, Henriksen, Martin R, Michieletto, Mattia, Triches, Marco, Lyngsø, Jens K, Hald, Jan

    Published in Optics express (07-03-2016)
    “…We demonstrate a compact fibre-based laser system at 2.05 microns stabilized to a CO transition using frequency modulation spectroscopy of a gas-filled…”
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    Journal Article
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    A classroom demonstration of reciprocal space by Hannibal Madsen, Morten, Høpfner, Louise, Rasmussen, Nina, Stolborg, Mikkel, Nygård, Jesper, Feidenhans'l, Robert, Thomsen, Jan W.

    Published in American journal of physics (01-04-2013)
    “…An array of nanowires and a laser pointer are used for a simple visualization of two-dimensional reciprocal space. The experiment can be performed without any…”
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    Metastable Magnesium fluorescence spectroscopy using a frequency-stabilized 517 nm laser by He, Ming, Jensen, Brian B, Therkildsen, Kasper T, Brusch, Anders, Thomsen, Jan W

    Published in Optics express (27-04-2009)
    “…We present a laser operating at 517 nm for our Magnesium laser-cooling and atomic clock project. A two-stage Yb-doped fiber amplifier (YDFA) system generates…”
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    Resonant energy transfer in Bose–Einstein condensates by Nicolin, Alexandru I., Jensen, Mogens H., Thomsen, Jan W., Carretero-González, R.

    Published in Physica. D (01-10-2008)
    “…We consider the dynamics of a dilute, magnetically-trapped one-dimensional Bose–Einstein condensate whose scattering length is periodically modulated with a…”
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    Subnatural Linewidth Superradiant Lasing with Cold ^{88}Sr Atoms by Kristensen, Sofus Laguna, Bohr, Eliot, Robinson-Tait, Julian, Zelevinsky, Tanya, Thomsen, Jan W, Müller, Jörg Helge

    Published in Physical review letters (02-06-2023)
    “…Superradiant lasers operate in the bad-cavity regime, where the phase coherence is stored in the spin state of an atomic medium rather than in the intracavity…”
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    Sub-Natural Linewidth Superradiant Lasing with Cold $^{88}$Sr Atoms by Kristensen, Sofus Laguna, Bohr, Eliot, Robinson-Tait, Julian, Zelevinsky, Tanya, Thomsen, Jan W, Müller, Jörg Helge

    Published 17-02-2023
    “…Superradiant lasers operate in the bad-cavity regime, where the phase coherence is stored in the spin state of an atomic medium rather than in the intracavity…”
    Get full text
    Journal Article
  17. 17

    Collectively enhanced Ramsey readout by cavity sub- to superradiant transition by Bohr, Eliot, Kristensen, Sofus L, Hotter, Christoph, Schäffer, Stefan Alaric, Robinson-Tait, Julian, Thomsen, Jan W, Zelevinsky, Tanya, Ritsch, Helmut, Müller, Jörg Helge

    Published 21-06-2023
    “…When an inverted ensemble of atoms is tightly packed on the scale of its emission wavelength or when the atoms are collectively strongly coupled to a single…”
    Get full text
    Journal Article
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    Cavity-immune features in the spectra of superradiant crossover laser pulses by Tang, Mikkel, Schäffer, Stefan A, Jørgensen, Asbjørn A, Henriksen, Martin R, Christensen, Bjarke T. R, Müller, Jörg H, Thomsen, Jan W

    Published 19-05-2021
    “…Phys. Rev. Research 3, 033258 (2021) Lasing in the bad cavity regime has promising applications in precision metrology due to the reduced sensitivity to cavity…”
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    Precision measurement of fermionic collisions using an 87Sr optical lattice clock with 1 x 10(-16) inaccuracy by Swallows, Matthew D, Campbell, Gretchen K, Ludlow, Andrew D, Boyd, Martin M, Thomsen, Jan W, Martin, Michael J, Blatt, Sebastian, Nicholson, Travis L, Ye, Jun

    “…We describe recent progress on the JILA Sr optical frequency standard, which has a systematic uncertainty at the 10(¿16) fractional frequency level. The…”
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