Stefan Alaric Schäffer

Stefan Alaric Schäffer

Postdoc

ORCID: 0000-0002-5296-0332

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  1. Published

    Atomic clock performance enabling geodesy below the centimetre level

    McGrew, W. F., Zhang, X., Fasano, R. J., Schäffer, Stefan Alaric, Beloy, K., Nicolodi, D., Brown, R. C., Hinkley, N., Milani, G., Schioppo, M., Yoon, T. H. & Ludlow, A. D., 6 Dec 2018, In: Nature. 564, 7734, p. 87-90

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

  2. Published

    Towards the optical second: verifying optical clocks at the SI limit

    McGrew, W. F., Zhang, X., Leopardi, H., Fasano, R. J., Nicolodi, D., Beloy, K., Yao, J., Sherman, J. A., Schäffer, Stefan Alaric, Savory, J., Brown, R. C., Romisch, S., Oates, C. W., Parker, T. E., Fortier, T. M. & Ludlow, A. D., 20 Apr 2019, In: Optica. 6, 4, p. 448-454

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

  3. 10-18 optical atomic clock comparisons within the boulder atomic clock network

    Nardelli, N. V., Beloy, K., Bodine, M. I., Bothwell, T., Brewer, S., Bromley, S., Clements, E., Deschenes, J. D., Diddams, S. A., Fasano, R., Fortier, T. M., Hassan, Y., Hume, D. H., Kedar, D., Kennedy, C. J., Khader, I., Koepke, A., Leibrandt, D. R., Leopardi, H., Ludlow, A. & 13 others, McGrew, W. F., Milner, W., Newbury, N., Nicolodi, D., Oelker, E., Parker, T., Robinson, J. M., Schäffer, Stefan Alaric, Sherman, J. A., Sinclair, L. C., Sonderhouse, L., Swann, W. C. & Wineland, D. J., 15 May 2020, In: Cleo. F183, STh3G.3.

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

  4. 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

  5. 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

  6. 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

  7. Published

    Cavity-enhanced optical clocks

    Schäffer, Stefan Alaric, 2019, Niels Bohr Institute, Faculty of Science, University of Copenhagen.

    Research output: Book/Report › Ph.D. thesis › Research

  8. 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

  9. Published

    Incorporating an Optical Clock into a Time Scale at NIST: Simulations and Preliminary Real-Data Analysis

    Sherman, J., Fortier, T., Yao, J., Parker, J., Levine, T., Savory, J., Romisch, S., McGrew, W., Zhang, X., Nicolodi, D., Fasano, R., Schäffer, Stefan Alaric, Beloy, K. & Ludlow, A., 29 Jan 2018, Proceedings of the 49th Annual Precise Time and Time Interval Systems and Applications Meeting. Reston, Virginia : Wiley, p. 11-21

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

  10. Published

    Det aktive atomur - en laser i sin reneste form

    Tang, M. & Schäffer, Stefan Alaric, 1 Dec 2018, In: Kvant. 4, p. 20-23

    Research output: Contribution to journal › Journal article › Communication

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