Absolute frequency measurement of the In+ clock transition with a mode-locked laser

von Zanthier J, Becker T, Eichenseer M, Nevsky A, Schwedes C, Peik E, Walther H, Holzwarth R, Reichert J, Udem T, Hänsch T, Pokasov P, Skvortsov MN, Bagayev SN (2000)

Publication Status: Published

Publication Type: Journal article

Publication year: 2000

Journal

Optics Letters Optical Society of America

Publisher: Optical Society of America

Book Volume: 25

Pages Range: 1729-1731

Journal Issue: 23

DOI: 10.1364/OL.25.001729

Abstract

The absolute frequency of the In+ 5s(2) S-1(0)-5s5p P-3(0) clock transition at 237 nm was measured with an accuracy of 1.8 parts in 10(13). Using a phase-coherent frequency chain, we compared the S-1(0)-P-3(0) transition with a methane-stabilized He-Ne laser at 3.39 mum, which was calibrated against an atomic cesium fountain clock. A frequency gap of 37 THz at the fourth harmonic of the He-Ne standard was bridged by a frequency comb generated by a mode-locked femtosecond laser. The frequency of the In+ clock transition was found to be 1267 402 452 899.92(0.23) kHz, the accuracy being limited by the uncertainty of the He-Ne laser reference. This result represents an improvement in accuracy of more than 2 orders of magnitude over previous measurements of the line and now stands as what is to our knowledge the most accurate measurement of an optical transition in a single ion.s (C) 2000 Optical Society of America.

Authors with CRIS profile

Joachim von Zanthier Quantum Optics & Quantum Information

Involved external institutions

Max-Planck-Institute of Quantum Optics (MPQ) / Max-Planck-Institut für Quantenoptik DE Germany (DE) Novosibirsk State University (NSU) RU Russian Federation (RU)

How to cite

APA:

von Zanthier, J., Becker, T., Eichenseer, M., Nevsky, A., Schwedes, C., Peik, E.,... Bagayev, S.N. (2000). Absolute frequency measurement of the In+ clock transition with a mode-locked laser. Optics Letters, 25(23), 1729-1731. https://dx.doi.org/10.1364/OL.25.001729

MLA:

von Zanthier, Joachim, et al. "Absolute frequency measurement of the In+ clock transition with a mode-locked laser." Optics Letters 25.23 (2000): 1729-1731.

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