Blackbody radiation shift of the 27Al+ 1S0 - 3P0 transition

Published

March 27, 2006

Author(s)

Till P. Rosenband, Wayne M. Itano, Piet Schmidt, David Hume, Jeroen Koelemeij, James C. Bergquist, David J. Wineland

Abstract

The differential polarizability, due to near-infrared light at 1126 nm, of the ²⁷Al⁺¹S₀ – ³P₀ transition is measured to be {Δ}α = (1.6 ± x 10^-31 m³, where {Δ}α = α_P - α_S is the difference between the excited and ground state polarizabilities. This measurement is combined with expeimental oscillator strengths to extrapolate the differential static polarizability of the clock transition as {Δ}α(0) = 4πε₀ x (1.5 ± 0.5) x 10^-31m³. The resulting room temperature blackbody shift of {Δ}Ņ / Ņ = -8(3)x10¹⁸ is the lowest known shift of all atomic transistions under consideration for optical frequency standards. A method is presented to estimate the differntial static polarizability of an optical transition, from a differential Stark shift measurement.

Proceedings Title

Proc. EFTF Conf.

Conference Dates

March 27-30, 2006

Conference Location

Braunschweig,

Pub Type

Conferences

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Keywords

aluminum ion clock, atomic polarizability, blackbody shift

Citation

Rosenband, T. , Itano, W. , Schmidt, P. , Hume, D. , Koelemeij, J. , Bergquist, J. and Wineland, D. (2006), Blackbody radiation shift of the ²⁷Al⁺ ¹S₀ - ³P₀ transition, Proc. EFTF Conf., Braunschweig, , [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=50331 (Accessed October 13, 2025)