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Physical Review A

Precise measurement of the Stark shift of the lithiumD1 line

L. R. Hunter, D. E. Krause, Dana J. Berkeland, M. G. Boshier

Published Nov 1, 1991• 36 citations
Publisher

Abstract

The dc Stark shift of the lithium D1 line has been observed using two visible diode lasers and an atomic beam. A heterodyne signal obtained from the two lasers permits a well-calibrated, high-precision measurement to be made. The scalar shift is found to be 4.6216(21) kHz/(kV/cm${)}^{2}$. We believe this result to be the most precise Stark shift measurement reported thus far.

DOI
10.1103/physreva.44.6140

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Journal of Physics B Atomic Molecular and Optical Physics•Jul 14, 1995•10 citations
The dc Stark shift of the lithium D1 line has been observed using two visible diode lasers and an atomic beam. A heterodyne signal obtained from the two lasers permits a well-calibrated, high-precision measurement to be made. The scalar shift is found to be 4.6216(21) kHz/(kV/cm)2{)}^{2})2. We believe this result to be the most precise Stark shift measurement reported thus far.
The dc Stark shift of the D1 lines of rubidium and potassium are observed using a pair of cavity-stabilized diode lasers locked to resonance signals. The heterodyne signal from the two lasers and the optical measurements of the electrode spacing yield high-precision results. The observed scalar shifts are found to be 61.153(8) kHz (kV/cm${)}^{\mathrm{\ensuremath{-}}2}$ for rubidium and 39.400(5) kHz (kV/cm${)}^{\mathrm{\ensuremath{-}}2}$ for potassium. These results represent more than three orders of magnitude improvement in our knowledge of these Stark shifts.
The Stark shift of the (4s)2{)}^{2})21{\mathrm{}}^{1}1S0{\mathit{S}}_{0}S0​\ensuremath{\rightarrow}(4s4p)3{\mathrm{}}^{3}3P1{\mathit{P}}_{1}P1​ transition in calcium was measured using a laser to excite an atomic beam as it traversed through a uniform electric field and a field-free region. The laser frequency was scanned across the transition, while fluorescence produced by the radiative decay of the excited state was detected. The frequency scan was calibrated using an acousto-optic modulator to frequency shift part of the laser beam. The Stark shift rate was found to be -12.314\ifmmode\pm\else\textpm\fi{}0.041 kHz/(kV/cm)2{)}^{2})2, where the minus sign indicates the transition frequency decreases when the electric field is applied. \textcopyright{} 1996 The American Physical Society.
The Stark effect of the 5 s 2 S 1/2 –5 p 2 P 3/2 transition ( D 2 line) of Rb has been studied by high-resolution atomic-beam laser spectroscopy. The splittings of magnetic sublevels of 5 p 2 P 3/2 have been resolved, and the Stark shifts and splittings of the D 2 line have been measured at various electric fields. The scalar polarizability of the D 2 line and the tensor polarizability of the 5 p 2 P 3/2 level have been determined to be α s (5 p 2 P 3/2 ) - α s (5 s 2 S 1/2 ) = 136.95(89) kHz/(kV/cm) 2 and α t (5 p 2 P 3/2 ) = -40.91(38) kHz/(kV/cm) 2 , respectively, by considering the mixing between hyperfine structure levels of 5 p 2 P 3/2 . The precision of α t (5 p 2 P 3/2 ) has been improved by a factor of 2 compared with the previously reported values.
The Stark shift of the (6s)2{)}^{2})2 1^{1}1S0{\mathit{S}}_{0}S0​\ensuremath{\rightarrow}(6s6p)1{)}^{1})1P1{\mathit{P}}_{1}P1​ transition in barium was measured using a laser to excite an atomic beam as it traversed a uniform electric field and a field-free region. The laser frequency was scanned across the transition while fluorescence produced by the radiative decay of the excited state was detected. The frequency scan was calibrated using an acousto-optic modulator which frequency shifted the laser by a specified amount. The Stark-shift rate was found to be -28.532\ifmmode\pm\else\textpm\fi{}0.060 kHz/(kV/cm)2{)}^{2})2. The hyperfine splitting of the 135,137Ba^{135,137}\mathrm{Ba}135,137Ba F=1/2 level relative to 138Ba^{138}\mathrm{Ba}138Ba of the (6s6p)1{)}^{1})1P1{\mathit{P}}_{1}P1​ state was determined to be -549.47\ifmmode\pm\else\textpm\fi{}0.12 MHz, where the minus sign indicates that the 138Ba^{138}\mathrm{Ba}138Ba transition is at a lower frequency.
The Stark shift of the (6s) 2 1 S 0 to (6s6p) 3 P 1 transition in ytterbium was measured using a laser to excite an atomic beam first in a uniform electric field and subsequently in a field-free region. The laser frequency was scanned across the transition while fluorescence produced by the radiative decay of the excited state was detected. The frequency scan was calibrated using isotope and hyperfine splittings that have been measured previously. The Stark shift rate was found to be -15.419+or-0.048 kHz kV -2 cm -2 and the tensor polarizability of the (6s6p) 3 P 1 state was determined to be alpha 2 =5.81+or-0.13 kHz kV -2 cm -2 .