Precision spectroscopy technique for dipole-allowed transitions in laser-cooled ions

Gardner, Amy, Sheridan, Kevin, Groom, William, Seymour-Smith, Nicolas and Keller, Matthias (2014) Precision spectroscopy technique for dipole-allowed transitions in laser-cooled ions. Applied Physics B, 117 (2). pp. 755-762. ISSN 0946-2171

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In this paper , we present a technique for the precise measurement of electric dipole-allowed transitions in trapped ions. By applying a probe and a cooling laser in quick succession, the full transition can be probed without causing distortion from heating the ion. In addition, two probes can be utilized to measure a dispersion-like signal, which is well suited to stabilizing the laser to the transition. We have fully characterized the parameters for the measurement and find that it is possible to measure the line center to better than 100 kHz with an interrogation time of 30 s. The long-term stability of the spectroscopy signal is determined by employing two independent ion trap systems. The first ion trap is used to stabilize the spectroscopy laser. The second ion trap is then employed to measure the stability by continuously probing the transition at two frequencies. From the Allan variance, we obtained a frequency instability of 1⋅10⁻¹⁰ for an interrogation time of 1,000 s.

Item Type: Article
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Subjects: Q Science > QC Physics > QC0170 Atomic physics. Constitution and properties of matter Including molecular physics, relativity, quantum theory, and solid state physics
Depositing User: Matthias Keller
Date Deposited: 10 Nov 2015 13:30
Last Modified: 10 Nov 2015 13:30
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