Sub-dekahertz spectroscopy of 199Hg+

Published

September 21, 2001

Author(s)

J. C. Bergquist, R J. Rafac, B. A. Young, James A. Beall, Wayne M. Itano, David J. Wineland

Abstract

Using a laser that is frequency locked to a Fabry-Perot etalon of high finesse and stability, we probe the 5d¹⁰6s²S₌ (F=0, m_f=0) 5d⁹6s^{2 2d5/2} (F=2, m_f=0) electric-quadrupole transition of a single laser-cooled ¹⁹⁹Hg⁺ ion stored in a cryogenic radio-frequency ion trap. We observe Fourier-transoform limited linewidths as narrow as 6.7 Hz at 282 nm (1.06 x 10¹⁵ Hz). The functional form and estimated values of some of the frequency shifts of the ²S₌ ^2d5/2 "clock" transition (including the quadrupole shift), which have been calculated using a combination of measured atomic parameters and ab initio calculations, are given.

Proceedings Title

Laser Frequency Stabilization, Standards, Measurement, and Applications

Volume

4269

Conference Dates

January 24-26, 2001

Conference Location

San Jose, CA, USA

Conference Title

SPIE - The International Society for Optical Engineering

Pub Type

Conferences

Keywords

atomic frequency standards, atomic spectroscopy, cooling and trapping, lasers' optical clocks

Citation

Bergquist, J. , Rafac, R. , Young, B. , Beall, J. , Itano, W. and Wineland, D. (2001), Sub-dekahertz spectroscopy of ¹⁹⁹Hg⁺, Laser Frequency Stabilization, Standards, Measurement, and Applications, San Jose, CA, USA (Accessed November 4, 2025)