Measurement of the hyperfine structure of the S{sub 1} at {sub {approx}}{sub sol{approx}} at {sub 2}-D{sub 5} at {sub {approx}}{sub sol{approx}} at {sub 2} transition in {sup 43}Ca{sup +}
- Institut fuer Experimentalphysik, Universitaet Innsbruck, Technikerstr. 25, A-6020 Innsbruck (Austria)
The hyperfine structure of the 4s {sup 2}S{sub 1} at {sub {approx}}{sub sol{approx}} at {sub 2}-3d {sup 2}S{sub 5} at {sub {approx}}{sub sol{approx}} at {sub 2} quadrupole transition at 729 nm in {sup 43}Ca{sup +} has been investigated by laser spectroscopy using a single trapped {sup 43}Ca{sup +} ion. We determine the hyperfine structure constants of the metastable level as A{sub D{sub 5}} at {sub {approx}}{sub sol{sub {approx}}} at {sub 2}=3.8931(2) MHz and B{sub D{sub 5}} at {sub {approx}}{sub sol{sub {approx}}} at {sub 2}=4.241(4) MHz. The isotope shift of the transition with respect to {sup 40}Ca{sup +} was measured to be {delta}{sub iso}{sup 43,40}=4134.713(5) MHz. We demonstrate the existence of transitions that become independent of the first-order Zeeman shift at nonzero low magnetic fields. These transitions might be better suited for building a frequency standard than the well-known 'clock transitions' between m=0 levels at zero magnetic field.
- OSTI ID:
- 20982303
- Journal Information:
- Physical Review. A, Vol. 75, Issue 3; Other Information: DOI: 10.1103/PhysRevA.75.032506; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
- Country of Publication:
- United States
- Language:
- English
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