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

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

doi:10.1007/978-3-319-64346-5_13

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

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

^*Corresponding author for this work

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

Abstract

In this paper, we present a detailed account of the first precision Ramseycomb 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 phasecoherent deep-UV pulses at 212.55 nm are used in the Ramsey-comb method to excite the two-photon 4p⁶ → 4p⁵5p[1/2]₀ transition. For the ⁸⁴Kr isotope, we find a transition frequency of 2829833101679(103) kHz. The fractional accuracy of 3.7 × 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
Title of host publication	Exploring the World with the Laser
Subtitle of host publication	Dedicated to Theodor Hänsch on his 75th Birthday
Publisher	Springer International Publishing Switzerland
Pages	207-224
Number of pages	18
ISBN (Electronic)	9783319643465
ISBN (Print)	9783319643458
DOIs	https://doi.org/10.1007/978-3-319-64346-5_13
Publication status	Published - Jan 2018

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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 Ramseycomb 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 phasecoherent deep-UV pulses at 212.55 nm are used in the Ramsey-comb method to excite the two-photon 4p6 → 4p55p[1/2]0 transition. For the 84Kr isotope, we find a transition frequency of 2829833101679(103) kHz. The fractional accuracy of 3.7 × 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.",

author = "Sandrine Galtier and Altmann, {Robert K.} and Dreissen, {Laura S.} and Eikema, {Kjeld S.E.}",

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doi = "10.1007/978-3-319-64346-5_13",

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High-accuracy deep-UV ramsey-comb spectroscopy in krypton. / Galtier, Sandrine; Altmann, Robert K.; Dreissen, Laura S. et al.
Exploring the World with the Laser: Dedicated to Theodor Hänsch on his 75th Birthday. Springer International Publishing Switzerland, 2018. p. 207-224.

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

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T1 - High-accuracy deep-UV ramsey-comb spectroscopy in krypton

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AU - Altmann, Robert K.

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AB - In this paper, we present a detailed account of the first precision Ramseycomb 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 phasecoherent deep-UV pulses at 212.55 nm are used in the Ramsey-comb method to excite the two-photon 4p6 → 4p55p[1/2]0 transition. For the 84Kr isotope, we find a transition frequency of 2829833101679(103) kHz. The fractional accuracy of 3.7 × 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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