Showing papers by "Leo W. Hollberg published in 2023"

Rapid, accurate imaging of magnetic fields with Yb atomic fluorescence

Abstract: We describe a fast imaging atomic vector magnetometer based on laser spectroscopy of the Zeeman splitting in the (6s6p) 3P1 state of Yb. In the presence of a magnetic field gradient, we observed prominent dark stripes (visible by eye or camera) in the fluorescence (556 nm) when a thermal Yb atomic beam is driven by square-wave amplitude-modulated light at RF frequencies. The 1S0-3P1 transition forms a “V” system where two laser sidebands interact simultaneously with two 3P1 Zeeman sublevels. The dark lines are contours of constant magnetic field strength, and are consistent with theoretical models dominated by Autler-Townes Splitting. The estimated magnetic field sensitivity is ≈ 10 μG (1 nT) for 100k image pixels recorded in 3 ms.