High-accuracy deep-UV Ramsey-comb spectroscopy in krypton

Sandrine Galtier; Robert K. Altmann; Laura S. Dreissen; Kjeld S. E. Eikema

doi:10.1007/s00340-016-6584-8

High-accuracy deep-UV Ramsey-comb spectroscopy in krypton

Sandrine Galtier, Robert K. Altmann, Laura S. Dreissen, Kjeld S. E. Eikema

Research output: Contribution to Journal › Article › Academic › peer-review

Abstract

In this paper, we present a detailed account of the first precision Ramsey-comb spectroscopy in the deep UV. We excite krypton in an atomic beam using pairs of frequency-comb laser pulses that have been amplified to the millijoule level and upconverted through frequency doubling in BBO crystals. The resulting phase-coherent deep-UV pulses at 212.55 nm are used in the Ramsey-comb method to excite the two-photon 4p 6 →4p 5 5p[1/2] 0
4p6→4p55p[1/2]0
transition. For the 84 Kr
84Kr
isotope, we find a transition frequency of 2829833101679(103) kHz. The fractional accuracy of 3.7×
3.7×
10 −11
10−11
is 34 times better than previous measurements, and also the isotope shifts are measured with improved accuracy. This demonstration shows the potential of Ramsey-comb excitation for precision spectroscopy at short wavelengths.

Original language	English
Article number	16
Pages (from-to)	1-10
Number of pages	10
Journal	Applied Physics B. Lasers and Optics
Volume	123
Issue number	1
DOIs	https://doi.org/10.1007/s00340-016-6584-8
Publication status	Published - Jan 2017

Funding

The work in this paper was funded by the Foundation for Fundamental Research on Matter (FOM) through its Program 125: ‘Broken Mirrors and Drifting Constants’ and Projectruimte 12PR3098: ‘Exploring the Boundaries of QED with Helium’.

Funders	Funder number
Stichting voor Fundamenteel Onderzoek der Materie	12PR3098

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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title = "High-accuracy deep-UV Ramsey-comb spectroscopy in krypton",

abstract = "In this paper, we present a detailed account of the first precision Ramsey-comb spectroscopy in the deep UV. We excite krypton in an atomic beam using pairs of frequency-comb laser pulses that have been amplified to the millijoule level and upconverted through frequency doubling in BBO crystals. The resulting phase-coherent deep-UV pulses at 212.55 nm are used in the Ramsey-comb method to excite the two-photon 4p 6 →4p 5 5p[1/2] 0 4p6→4p55p[1/2]0 transition. For the 84 Kr 84Kr isotope, we find a transition frequency of 2829833101679(103) kHz. The fractional accuracy of 3.7× 3.7× 10 −11 10−11 is 34 times better than previous measurements, and also the isotope shifts are measured with improved accuracy. This demonstration shows the potential of Ramsey-comb excitation for precision spectroscopy at short wavelengths.",

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Y1 - 2017/1

N2 - In this paper, we present a detailed account of the first precision Ramsey-comb spectroscopy in the deep UV. We excite krypton in an atomic beam using pairs of frequency-comb laser pulses that have been amplified to the millijoule level and upconverted through frequency doubling in BBO crystals. The resulting phase-coherent deep-UV pulses at 212.55 nm are used in the Ramsey-comb method to excite the two-photon 4p 6 →4p 5 5p[1/2] 0 4p6→4p55p[1/2]0 transition. For the 84 Kr 84Kr isotope, we find a transition frequency of 2829833101679(103) kHz. The fractional accuracy of 3.7× 3.7× 10 −11 10−11 is 34 times better than previous measurements, and also the isotope shifts are measured with improved accuracy. This demonstration shows the potential of Ramsey-comb excitation for precision spectroscopy at short wavelengths.

AB - In this paper, we present a detailed account of the first precision Ramsey-comb spectroscopy in the deep UV. We excite krypton in an atomic beam using pairs of frequency-comb laser pulses that have been amplified to the millijoule level and upconverted through frequency doubling in BBO crystals. The resulting phase-coherent deep-UV pulses at 212.55 nm are used in the Ramsey-comb method to excite the two-photon 4p 6 →4p 5 5p[1/2] 0 4p6→4p55p[1/2]0 transition. For the 84 Kr 84Kr isotope, we find a transition frequency of 2829833101679(103) kHz. The fractional accuracy of 3.7× 3.7× 10 −11 10−11 is 34 times better than previous measurements, and also the isotope shifts are measured with improved accuracy. This demonstration shows the potential of Ramsey-comb excitation for precision spectroscopy at short wavelengths.

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High-accuracy deep-UV Ramsey-comb spectroscopy in krypton

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