High-Precision Ramsey-Comb Spectroscopy Based on High-Harmonic Generation

L. S. Dreissen; C. Roth; E. L. Gründeman; J. J. Krauth; M. Favier; K. S.E. Eikema

doi:10.1103/PhysRevLett.123.143001

High-Precision Ramsey-Comb Spectroscopy Based on High-Harmonic Generation

L. S. Dreissen, C. Roth, E. L. Gründeman, J. J. Krauth, M. Favier, K. S.E. Eikema

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Abstract

High-harmonic generation (HHG) is widely used for up-conversion of amplified (near) infrared ultrafast laser pulses to short wavelengths. We demonstrate that Ramsey-comb spectroscopy, based on two such pulses derived from a frequency-comb laser, enables us to observe phase effects in this process with a few mrad precision. As a result, we could perform the most accurate spectroscopic measurement based on light from HHG, illustrated with a determination of the 5p6→5p58s[23/2]1 transition at 110 nm in Xe132. We improve its relative accuracy 104 times to a value of 2.3×10-10. This is 3.6 times better than shown before involving HHG, and promising to enable 1S-2S spectroscopy of He+ for fundamental tests.

Original language	English
Article number	143001
Pages (from-to)	1-6
Number of pages	6
Journal	Physical Review Letters
Volume	123
Issue number	14
Early online date	2 Oct 2019
DOIs	https://doi.org/10.1103/PhysRevLett.123.143001
Publication status	Published - 4 Oct 2019

Funding

Funders	Funder number
Horizon 2020 Framework Programme	695677

UN SDGs

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

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10.1103/PhysRevLett.123.143001

High-Precision Ramsey-Comb Spectroscopy Based on High-Harmonic GenerationFinal published version, 721 KBLicence: Article 25fa Dutch Copyright Act

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title = "High-Precision Ramsey-Comb Spectroscopy Based on High-Harmonic Generation",

abstract = "High-harmonic generation (HHG) is widely used for up-conversion of amplified (near) infrared ultrafast laser pulses to short wavelengths. We demonstrate that Ramsey-comb spectroscopy, based on two such pulses derived from a frequency-comb laser, enables us to observe phase effects in this process with a few mrad precision. As a result, we could perform the most accurate spectroscopic measurement based on light from HHG, illustrated with a determination of the 5p6→5p58s[23/2]1 transition at 110 nm in Xe132. We improve its relative accuracy 104 times to a value of 2.3×10-10. This is 3.6 times better than shown before involving HHG, and promising to enable 1S-2S spectroscopy of He+ for fundamental tests.",

author = "Dreissen, {L. S.} and C. Roth and Gr{\"u}ndeman, {E. L.} and Krauth, {J. J.} and M. Favier and Eikema, {K. S.E.}",

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doi = "10.1103/PhysRevLett.123.143001",

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AU - Dreissen, L. S.

AU - Roth, C.

AU - Gründeman, E. L.

AU - Krauth, J. J.

AU - Favier, M.

AU - Eikema, K. S.E.

PY - 2019/10/4

Y1 - 2019/10/4

N2 - High-harmonic generation (HHG) is widely used for up-conversion of amplified (near) infrared ultrafast laser pulses to short wavelengths. We demonstrate that Ramsey-comb spectroscopy, based on two such pulses derived from a frequency-comb laser, enables us to observe phase effects in this process with a few mrad precision. As a result, we could perform the most accurate spectroscopic measurement based on light from HHG, illustrated with a determination of the 5p6→5p58s[23/2]1 transition at 110 nm in Xe132. We improve its relative accuracy 104 times to a value of 2.3×10-10. This is 3.6 times better than shown before involving HHG, and promising to enable 1S-2S spectroscopy of He+ for fundamental tests.

AB - High-harmonic generation (HHG) is widely used for up-conversion of amplified (near) infrared ultrafast laser pulses to short wavelengths. We demonstrate that Ramsey-comb spectroscopy, based on two such pulses derived from a frequency-comb laser, enables us to observe phase effects in this process with a few mrad precision. As a result, we could perform the most accurate spectroscopic measurement based on light from HHG, illustrated with a determination of the 5p6→5p58s[23/2]1 transition at 110 nm in Xe132. We improve its relative accuracy 104 times to a value of 2.3×10-10. This is 3.6 times better than shown before involving HHG, and promising to enable 1S-2S spectroscopy of He+ for fundamental tests.

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High-Precision Ramsey-Comb Spectroscopy Based on High-Harmonic Generation

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