Direct spectroscopy of the S-2(1/2)-P-2(1/2) and D-2(3/2)-P-2(1/2) transitions and observation of micromotion modulated spectra in trapped Ca-40(+)

作者：Pruttivarasin Thaned^*; Ramm Michael; Haeffner Hartmut

来源：Journal of Physics B: Atomic, Molecular and Optical Physics , 2014, 47(13): 135002.

DOI：10.1088/0953-4075/47/13/135002

• spectroscopy
• trapped ions and atoms
• micromotion

We present an experimental scheme to perform spectroscopy on ions and atoms with a lambda-level structure. By rapidly switching lasers between both transitions, we circumvent the complications of both dark resonances and the ac-Stark effect. We demonstrate the scheme on the S-2(1/2)-P-2(1/2) and D-2(3/2)-P-2(1/2) transitions in Ca-40(+) and, within a measurement time of 10 min, extract the centre frequencies of both dipole transitions with a statistical uncertainty on the order of 200 kHz. We also apply this method to directly observe the micromotion modulated fluorescence spectra of both transitions and for the first time measure the dependence of the micromotion modulation index on the trap frequency for both transitions.

• 出版日期2014-7-14