Year: 2026
Type: article
Abstract: High-resolution optical spectroscopy of Rb atoms in an intermediate-Zeeman magnetic field regime is performed. Magnetic fields between 0.05 T and 0.13 T are measured. We introduce a measurement approach based on three-level $$\Lambda $$ Λ systems where the open-loop frequency energy separation is determined by the applied magnetic field. Using this method an accuracy better than 100 ppm is reached in a measurement series. In parallel, on the basis of complementary measurements based on three-level V systems we obtain the first experimental value of the Landé g-factor of the first excited state for $$^{85}$$ 85 Rb, $$^{85}g_J(5P_{1/2})$$ 85 g J ( 5 P 1 / 2 ) =0.66709(7), and for $$^{87}$$ 87 Rb, $$^{87}g_J(5P_{1/2})$$ 87 g J ( 5 P 1 / 2 ) =0.6663(2). Our approach is unprecedented in the literature for Rb. Graphic abstract Experimental results for the Land´e g-factor of the first excited state of Rb
Source: The European Physical Journal D
Language: English
Topic: Atomic and Molecular Physics
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $3,790
OpenAlex ID: W7122457524