TY - JOUR

T1 - Linear Paul trap design for an optical clock with Coulomb crystals

AU - Herschbach, N.

AU - Pyka, K.

AU - Kelle, J.

AU - Mehlstäubler, T. E.

PY - 2012/6

Y1 - 2012/6

N2 - We report on the design of a segmented linear Paul trap for optical clock applications using trapped ion Coulomb crystals. For an optical clock with an improved short-term stability and a fractional frequency uncertainty of 10-18, we propose 115In+ ions sympathetically cooled by 172Yb+. We discuss the systematic frequency shifts of such a frequency standard. In particular, we elaborate on highprecision calculations of the electric radiofrequency field of the ion trap using the finite element method. These calculations are used to find a scalable design with minimized excess micromotion of the ions at a level at which the corresponding second-order Doppler shift contributes less than 10-18 to the relative uncertainty of the frequency standard.

AB - We report on the design of a segmented linear Paul trap for optical clock applications using trapped ion Coulomb crystals. For an optical clock with an improved short-term stability and a fractional frequency uncertainty of 10-18, we propose 115In+ ions sympathetically cooled by 172Yb+. We discuss the systematic frequency shifts of such a frequency standard. In particular, we elaborate on highprecision calculations of the electric radiofrequency field of the ion trap using the finite element method. These calculations are used to find a scalable design with minimized excess micromotion of the ions at a level at which the corresponding second-order Doppler shift contributes less than 10-18 to the relative uncertainty of the frequency standard.

UR - http://www.scopus.com/inward/record.url?scp=84898732441&partnerID=8YFLogxK

U2 - 10.1007/s00340-011-4790-y

DO - 10.1007/s00340-011-4790-y

M3 - Article

AN - SCOPUS:84898732441

VL - 107

SP - 891

EP - 906

JO - Applied Physics B: Lasers and Optics

JF - Applied Physics B: Lasers and Optics

SN - 0946-2171

IS - 4

ER -