Jan Westenkær Thomsen

Jan Westenkær Thomsen

Head of Department, Professor


Publication year:
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1 - 25 out of 63Page size: 25
  1. 2024
  2. Published

    Collectively enhanced Ramsey readout by cavity sub- to superradiant transition

    Bohr, Eliot, Kristensen, Sofus Laguna, Hotter, C., Schäffer, Stefan Alaric, Robinson-Tait, J. C., Thomsen, Jan Westenkær, Zelevinsky, Tanya, Ritsch, H. & Müller, Jörg Helge, 5 Feb 2024, In: Nature Communications. 15, 7 p., 1084.

    Research output: Contribution to journal › Journal article › Research › peer-review

  3. 2023
  4. Published

    Subnatural Linewidth Superradiant Lasing with Cold 88Sr Atoms

    Kristensen, Sofus Laguna, Bohr, Eliot, Robinson-Tait, J., Zelevinsky, Tanya, Thomsen, Jan Westenkær & Müller, Jörg Helge, 2 Jun 2023, In: Physical Review Letters. 130, 22, 5 p., 223402.

    Research output: Contribution to journal › Letter › Research › peer-review

  5. 2022
  6. Published

    Petabit-per-second data transmission using a chip-scale microcomb ring resonator source

    Jorgensen, A. A., Kong, D., Henriksen, M. R., Klejs, F., Ye, Z., Helgason, O. B., Hansen, H. E., Hu, H., Yankov, M., Forchhammer, S., Andrekson, P., Larsson, A., Karlsson, M., Schroder, J., Sasaki, Y., Aikawa, K., Thomsen, J. W., Morioka, T., Galili, M., Torres-Company, V. & 1 others, Oxenlowe, L. K., 20 Oct 2022, In: Nature Photonics. 16, p. 798-802 8 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  7. 2021
  8. Published

    Cavity-immune spectral features in the pulsed superradiant crossover regime

    Tang, M., Schaffer, S. A., Jørgensen, Asbjørn Arvad, Henriksen, M. R., Christensen, B. T. R., Müller, Jörg Helge & Thomsen, Jan Westenkær, 17 Sep 2021, In: Physical Review Research. 3, 3, 9 p., 033258.

    Research output: Contribution to journal › Journal article › Research › peer-review

  9. 2020
  10. Published

    Single Dark-Pulse Kerr Comb Supporting 1.84 Pbit/s Transmission over 37-Core Fiber

    Kong, D., Jorgensen, A. A., Henriksen, M. R., Klejs, F., Ye, Z., Helgason, O. B., Hansen, H. E., Hu, H., Yankov, M., Forchhammer, S., Andrekson, P., Larsson, A., Karlsson, M., Schroeder, J., Sasaki, Y., Aikawa, K., Thomsen, J. W., Morioka, T., Galili, M., Torres-Company, V. & 1 others, Oxenlowe, L. K., 10 May 2020, 2020 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO). San Jose, California, USA: IEEE, 2 p. JTh4A.7. (Conference on Lasers and Electro-Optics).

    Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

  11. Published

    Lasing on a narrow transition in a cold thermal strontium ensemble

    Schäffer, Stefan Alaric, Tang, M., Henriksen, M. R., Jørgensen, Asbjørn Arvad, Christensen, B. T. R. & Thomsen, Jan Westenkær, 17 Jan 2020, In: Physical Review A. 101, 1, 9 p., 013819.

    Research output: Contribution to journal › Journal article › Research › peer-review

  12. 2019
  13. Published

    SAGE: A proposal for a space atomic gravity explorer

    Tino, G. M., Bassi, A., Bianco, G., Bongs, K., Bouyer, P., Cacciapuoti, L., Capozziello, S., Chen, X., Chiofalo, M. L., Derevianko, A., Ertmer, W., Gaaloul, N., Gill, P., Graham, P. W., Hogan, J. M., Iess, L., Kasevich, M. A., Katori, H., Klempt, C., Lu, X. & 27 others, Ma, L., Mueller, H., Newbury, N. R., Oates, C. W., Peters, A., Poli, N., Rasel, E. M., Rosi, G., Roura, A., Salomon, C., Schiller, S., Schleich, W., Schlippert, D., Schreck, F., Schubert, C., Sorrentino, F., Sterr, U., Thomsen, Jan Westenkær, Vallone, G., Vetrano, F., Villoresi, P., von Klitzing, W., Wilkowski, D., Wolf, P., Ye, J., Yu, N. & Zhan, M., 1 Nov 2019, In: The European Physical Journal D: Atomic, Molecular, Optical and Plasma Physics. 73, 11, 228.

    Research output: Contribution to journal › Journal article › Research › peer-review

  14. 2017
  15. Published

    Dynamics of bad-cavity-enhanced interaction with cold Sr atoms for laser stabilization

    Schäffer, Stefan Alaric, Christensen, B. T. R., Henriksen, M. R. & Thomsen, Jan Westenkær, 24 Jul 2017, In: Physical Review A. 96, 1, 013847.

    Research output: Contribution to journal › Journal article › Research › peer-review

  16. Published

    Towards passive and active laser stabilization using cavity-enhanced atomic interaction

    Schäffer, Stefan Alaric, Christensen, B. T. R., Rathmann, S. M., Appel, Martin Hayhurst, Henriksen, M. R. & Thomsen, Jan Westenkær, 19 Jun 2017, In: Journal of Physics - Conference Series. 810, 1, 7 p., 012002.

    Research output: Contribution to journal › Journal article › Research › peer-review

  17. Published

    Towards Actively Stabilized Micro Ring Resonator Based Frequency Combs

    Henriksen, M. R., Kamel, A. N., Pu, M., Yvind, K. & Thomsen, Jan Westenkær, 2017, 2017 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO). San Jose, USA: Optical Society of America, JTh2A.88. (Conference on Lasers and Electro-Optics).

    Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

  18. 2016
  19. Published

    Compact, CO2-stabilized tuneable laser at 2.05 microns

    Westergaard, P. G., Thomsen, Jan Westenkær, Henriksen, M. R., Michieletto, M., Triches, M., Lyngsø, J. K. & Hald, J., 7 Mar 2016, In: Optics Express. 24, 5, p. 4872-4880

    Research output: Contribution to journal › Journal article › Research › peer-review

  20. 2015
  21. Published

    Nonlinear spectroscopy of Sr atoms in an optical cavity for laser stabilization

    Christensen, B. T. R., Henriksen, M. R., Schäffer, Stefan Alaric, Westergaard, P. G., Ye, J., Holland, M. & Thomsen, Jan Westenkær, 6 Nov 2015, In: Physical Review A (Atomic, Molecular and Optical Physics). 92, 053820.

    Research output: Contribution to journal › Journal article › Research › peer-review

  22. Published

    Towards Molecular Clocks Using Large Waist Cavity Enhanced Spectroscopy: FACT workshop

    Adsersen, S. S., Henriksen, M. R., Schäffer, Stefan Alaric & Thomsen, Jan Westenkær, 1 Sep 2015

    Research output: Other contribution › Research

  23. Published

    Laser stabilization using saturated absorption in a cavity-QED system

    Tieri, D. A., Cooper, J., Christensen, B. T. R., Thomsen, Jan Westenkær & Holland, M. J., 10 Jul 2015, In: Physical Review A (Atomic, Molecular and Optical Physics). 92, 1, 013817.

    Research output: Contribution to journal › Journal article › Research › peer-review

  24. Published

    Large waist cavity for ultra-narrow transition spectroscopy

    Schäffer, Stefan Alaric, Adsersen, S. S., Christensen, B. T. R. & Thomsen, Jan Westenkær, 12 Apr 2015, 2015 Joint Conference of the IEEE International Frequency Control Symposium & the European Frequency and Time Forum . IEEE ed. Denver,CO, p. 625-629 15285778. (IEEE International Frequency Control Symposium & the European Frequency and Time Forum; No. 15285778).

    Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

  25. Published

    Laser stabilization on velocity dependent nonlinear dispersion of Sr atoms in an optical cavity: In Frequency Control Symposium & the European Frequency and Time Forum

    Christensen, B. T. R., Schäffer, Stefan Alaric, Henriksen, M. R., Westergaard, P. G., Ye, J. & Thomsen, Jan Westenkær, 10 Apr 2015, In: Proceedings of the IEEE. p. 357-362

    Research output: Contribution to journal › Conference article › Research › peer-review

  26. Published

    Hyperfine structure of the (3s3d)3J manifold of 25Mg I

    Kjoller, K., Porsev, S. G., Westergaard, P. G., Andersen, Nils Overgaard & Thomsen, Jan Westenkær, 26 Mar 2015, In: Physical Review A (Atomic, Molecular and Optical Physics). 91, 3, 032515.

    Research output: Contribution to journal › Journal article › Research › peer-review

  27. Published

    Observation of Motion-Dependent Nonlinear Dispersion with Narrow-Linewidth Atoms in an Optical Cavity

    Westergaard, P. G., Christensen, B. T. R., Tieri, D., Matin, R., Cooper, J., Holland, M., Ye, J. & Thomsen, Jan Westenkær, 4 Mar 2015, In: Physical Review Letters. 114, 9, 093002.

    Research output: Contribution to journal › Journal article › Research › peer-review

  28. 2013
  29. Published

    A classroom demonstration of reciprocal space

    Madsen, M. H., Høpfner, L., Rasmussen, N., Stolborg, M., Nygård, Jesper, Feidenhans'l, Robert Krarup & Thomsen, Jan Westenkær, 18 Mar 2013, In: American Journal of Physics. 81, 4, 7 p., 274.

    Research output: Contribution to journal › Journal article › Research › peer-review

  30. 2011
  31. Published

    Extreme nonlinear response of ultranarrow optical transitions in cavity QED for laser stabilization

    Martin, M. J., Meiser, D., Thomsen, Jan Westenkær, Ye, J. & Holland, M. J., 5 Dec 2011, In: Physical Review A (Atomic, Molecular and Optical Physics). 84, 6, p. 063813

    Research output: Contribution to journal › Journal article › Research › peer-review

  32. Published

    Experimental Determination of the 24Mg I (3s3p)3P2 Lifetime

    Jensen, B. B., He, M., Westergaard, P. G., Gunarsson, K., Madsen, M. H., Brusch, A., Hald, J. & Thomsen, Jan Westenkær, 7 Sep 2011, In: Physical Review Letters. 107, 11, p. 113001 5 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  33. 2010
  34. Published

    Measurement of the (3s3p)1 P–(3s3d)1 D isotope shift in Mg¿

    Steenstrup, M. P. H., Brusch, A., Hald, J., Jensen, B. B. & Thomsen, Jan Westenkær, 12 Nov 2010, In: Physical Review A (Atomic, Molecular and Optical Physics). 82, 5, p. 054501 3 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  35. Published

    Precision measurement of fermionic collisions using an 87Sr optical lattice clock with 1 × 10-16 inaccuracy

    Swallows....[et al.], M. D., Campbell, G. K., Boyd, M. M. & Thomsen, Jan Westenkær, 4 Mar 2010, In: IEEE Transactions on Ultrasonics Ferroelectrics and Frequency Control. 57, 3, p. 574-582 8 p.

    Research output: Contribution to journal › Conference article › Research › peer-review

  36. 2009
  37. Published

    Isotope shifts of the (3s3p) 3P0,1,2-(3s4s) 3S1 Mg I transitions

    He, M., Therkildsen, K. T., Jensen, B. B., Brusch, A., Thomsen, Jan Westenkær & Porsev, S. G., 2009, In: Physical Review A (Atomic, Molecular and Optical Physics). 80, 2, p. 024501 4 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  38. Published

    Measurement of the spin-forbidden decay rate (3s3d)1D2¿(3s3p)3 P2,1 in 24Mg

    Therkildsen, K. T., Jensen, B. B., Ryder, C. P., Malossi, N. & Thomsen, Jan Westenkær, 2009, In: Physical Review A (Atomic, Molecular and Optical Physics). 79, 3, p. 034501 4 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

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