Determination of hyperfine structure constants of 5D_5/2 and 7S_1/2 states of rubidium in cascade atomic system

【摘要】 We present a method to precisely determine the hyperfine structure constants of the rubidium 5D_5/2 and 7S_1/2 states in a cascade atomic system. The probe laser is coupled to the 5S_1/2→ 5P_3/2 hyperfine transition, while the coupling laser is scanned over the 5P_3/2→ 5D_5/2(7S_1/2) transition. The high-resolution double-resonance optical pumping spectra are obtained with two counter-propagating laser beams acting on rubidium vapor. The hyperfine splitting structures are accurately measured by an optical frequency ruler based on the acousto-optic modulator, thus, the magnetic dipole hyperfine coupling constant A and quadrupole coupling constant B are determined. It is of great significance for the atomic hyperfine structure and fundamental physics research.更多还原

【Abstract】 We present a method to precisely determine the hyperfine structure constants of the rubidium 5D_5/2 and 7S_1/2 states in a cascade atomic system. The probe laser is coupled to the 5S_1/2→ 5P_3/2 hyperfine transition, while the coupling laser is scanned over the 5P_3/2→ 5D_5/2(7S_1/2) transition. The high-resolution double-resonance optical pumping spectra are obtained with two counter-propagating laser beams acting on rubidium vapor. The hyperfine splitting structures are accurately measured by an optical frequency ruler based on the acousto-optic modulator, thus, the magnetic dipole hyperfine coupling constant A and quadrupole coupling constant B are determined. It is of great significance for the atomic hyperfine structure and fundamental physics research.更多还原