Precise measurement of hyperfine structure in the 52P1/2 state of Rb
Department of Physics, Indian Institute of Science, Bangalore, 560 012, India
Corresponding author: a firstname.lastname@example.org
Revised: 14 October 2005
Published online: 22 November 2005
We have measured hyperfine structure in the 5 2P1/2 state of Rb using a frequency-stabilized diode laser, which is locked to one hyperfine transition, and an acousto-optic modulator, whose frequency is locked to the interval of interest. We check for optical-pumping errors by repeating the measurement at different values of pump power in the saturated-absorption spectrometer. We obtain precise values of the hyperfine constant: A=120.645(5) MHz for 85Rb and A=406.119(7) MHz for 87Rb. The values resolve a large discrepancy between two earlier high-accuracy measurements on this state.
PACS: 32.10.Fn – Fine and hyperfine structure / 42.62.Fi – Laser spectroscopy / 42.55.Px – Semiconductor lasers; laser diodes
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2005