A steady-state magneto-optical trap of fermionic strontium on a narrow-line transition

Abstract

A steady-state magneto-optical trap (MOT) of fermionic strontium atoms operating on the 7.5 kHz-wide ${}^1{\mathrm{S}}_0-{}^3{\mathrm{P}}_1$ transition is demonstrated. This MOT features $8.4\times 10^7$ atoms, a loading rate of $1.3\times 10^7$atoms/s, and an average temperature of 12 $\mu$K. These parameters make it well suited to serve as a source of atoms for continuous-wave superradiant lasers operating on strontium's mHz-wide clock transition. Such lasers have only been demonstrated using pulsed Sr sources, limiting their range of applications. Our MOT makes an important step toward continuous operation of these devices, paving the way for continuous-wave active optical clocks.

11 pages, 7 figures

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Cited by in corpus (4)

• Modeling of a continuous superradiant laser on the sub-mHz ${}^1$S${}_0\to {}^3$P${}_0$ transition in neutral strontium-88
• Optical pumping of ${5s4d}^1{\mathrm{D}}_2$ strontium atoms for laser cooling and imaging
• Two-color Ytterbium MOT in a compact dual-chamber setup
• A superradiant two-level laser with intrinsic light force generated gain