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Precision measurement of the hydrogen 1S-2S frequency via a 920-km fiber link.
Matveev A, Parthey CG, Predehl K, Alnis J, Beyer A, Holzwarth R, Udem T, Wilken T, Kolachevsky N, Abgrall M, Rovera D, Salomon C, Laurent P, Grosche G, Terra O, Legero T, Schnatz H, Weyers S, Altschul B, Hänsch TW. Matveev A, et al. Among authors: holzwarth r. Phys Rev Lett. 2013 Jun 7;110(23):230801. doi: 10.1103/PhysRevLett.110.230801. Epub 2013 Jun 6. Phys Rev Lett. 2013. PMID: 25167479
Improved measurement of the hydrogen 1S-2S transition frequency.
Parthey CG, Matveev A, Alnis J, Bernhardt B, Beyer A, Holzwarth R, Maistrou A, Pohl R, Predehl K, Udem T, Wilken T, Kolachevsky N, Abgrall M, Rovera D, Salomon C, Laurent P, Hänsch TW. Parthey CG, et al. Among authors: holzwarth r. Phys Rev Lett. 2011 Nov 11;107(20):203001. doi: 10.1103/PhysRevLett.107.203001. Epub 2011 Nov 11. Phys Rev Lett. 2011. PMID: 22181729
Optical-frequency transfer over a single-span 1840 km fiber link.
Droste S, Ozimek F, Udem T, Predehl K, Hänsch TW, Schnatz H, Grosche G, Holzwarth R. Droste S, et al. Among authors: holzwarth r. Phys Rev Lett. 2013 Sep 13;111(11):110801. doi: 10.1103/PhysRevLett.111.110801. Epub 2013 Sep 12. Phys Rev Lett. 2013. PMID: 24074067
Phase-coherent frequency comparison of optical clocks using a telecommunication fiber link.
Schnatz H, Terra O, Predehl K, Feldmann T, Legero T, Lipphardt B, Sterr U, Grosche G, Holzwarth R, Hänsch TW, Udem T, Lu ZH, Wang LJ, Ertmer W, Friebe J, Pape A, Rasel EM, Riedmann M, Wübbena T. Schnatz H, et al. Among authors: holzwarth r. IEEE Trans Ultrason Ferroelectr Freq Control. 2010 Jan;57(1):175-81. doi: 10.1109/TUFFC.2010.1395. IEEE Trans Ultrason Ferroelectr Freq Control. 2010. PMID: 20040443
Optical frequency synthesizer for precision spectroscopy.
Holzwarth R, Udem T, Hansch TW, Knight JC, Wadsworth WJ, Russell PS. Holzwarth R, et al. Phys Rev Lett. 2000 Sep 11;85(11):2264-7. doi: 10.1103/PhysRevLett.85.2264. Phys Rev Lett. 2000. PMID: 10977987
New limits on the drift of fundamental constants from laboratory measurements.
Fischer M, Kolachevsky N, Zimmermann M, Holzwarth R, Udem T, Hänsch TW, Abgrall M, Grünert J, Maksimovic I, Bize S, Marion H, Pereira Dos Santos F, Lemonde P, Santarelli G, Laurent P, Clairon A, Salomon C, Haas M, Jentschura UD, Keitel CH. Fischer M, et al. Among authors: holzwarth r. Phys Rev Lett. 2004 Jun 11;92(23):230802. doi: 10.1103/PhysRevLett.92.230802. Epub 2004 Jun 10. Phys Rev Lett. 2004. PMID: 15245149
72 results