Spectroscopy of the ${}^{85}$Rb 4$D_{3/2}$ state for hyperfine-structure determination

Abstract

We report a measurement of the hyperfine-structure constants of the ${}^{85}$Rb 4$D_{3/2}$ state using a two-photon 5$S_{1/2}\to$4$D_{3/2}$ transition. The hyperfine transitions are probed by measuring the transmission of the low-power 795-nm lower-stage laser beam through a cold-atom sample as a function of 795-nm laser frequency, with the frequency of the upper-stage 1476-nm laser fixed. All 4 hyperfine components are well-resolved in the recorded transmission spectra. AC shifts are carefully considered. The field-free hyperfine line positions are obtained by extrapolating measured line positions to zero laser power. The magnetic-dipole and electric-quadrupole constants, $A$ and $B$, are determined from the hyperfine intervals to be 7.419(35)~MHz and 4.19(19)~MHz, respectively. The results are evaluated in context with previous works. Possible uses of the Rb 4$D_J$ states in Rydberg-atom-physics, precision-metrology and quantum-technology applications are discussed.

9 pages, 5 figures, 2 tables

References in corpus (7)

• The Quantum Internet
• Experimental observation of magic-wavelength behavior in optical lattice-trapped ${}^{87}$Rb
• Survey of hyperfine structure measurements in alkali atoms
• Circularizing Rydberg atoms with time-dependent optical traps
• Millisecond-lived circular Rydberg atoms in a room-temperature experiment
• Electric field analysis in a cold-ion source using Stark spectroscopy of Rydberg atoms
• Dynamic polarizability of the ${}^{85}$Rb $5D_{3/2}$-state in 1064 nm light

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• Hyperfine structure and collisions in three-photon Rydberg electromagnetically induced transparency