Magnetic field-induced spectroscopy of strongly forbidden optical transitions
Alexey Taychenachev, V Yudin, Christopher W. Oates, C Hoyt, Zeb Barber, Leo W. Hollberg
We propose a method that uses a static magnetic field to enable direct optical excitation of forbidden electric dipole transitions that are otherwise prohibitively weak. The method is based on mixing of atomic states by a static magnetic field. The method can also be viewed as a limiting case of two-photon spectroscopy, where the frequency of one of the fields -- a magnetic field, in this case -- is equal to zero. Using this method, we calculate that an optical lattice-based ytterbium standard could achieve a fractional frequency uncertainty of less than 10-17 for the metrologically preferred even isotope.
atomic coherence, laser frequency metrology, laser spectroscopy
, Yudin, V.
, Oates, C.
, Hoyt, C.
, Barber, Z.
and Hollberg, L.
Magnetic field-induced spectroscopy of strongly forbidden optical transitions, Physical Review Letters, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=50212
(Accessed September 28, 2023)