K. Harada

Laser frequency locking with 46 GHz offset using an electro-optic modulator for magneto-optical trapping of francium atoms.

We demonstrate frequency offset locking between two laser sources using a waveguide-type electro-optic modulator (EOM) with 10th-order sidebands for magneto-optical trapping of Fr atoms. The frequency locking error signal was successfully obtained by performing delayed self-homodyne detection of the beat signal between the repumping frequency and the 10th-order sideband component of the trapping light. Sweeping the trapping-light and repumping-light frequencies with keeping its frequency difference of 46 GHz was confirmed over 1 GHz by monitoring the Doppler absorption profile of I₂. This technique enables us to search for a resonance frequency of magneto-optical trapping of Fr.

Magic and tune-out wavelengths for atomic francium

The frequency dependent polarizabilities of the francium atom are calculated from the available data of energy levels and transition rates. Magic wavelengths for the state insensitive optical dipole trapping are identified from the calculated light shifts of the

Transportation of a radioactive ion beam for precise laser-trapping experiments.

7s

Radioactive ion beam transportation for the fundamental symmetry study with laser-trapped atoms

^{2}{S}_{1/2}

Laser Cooled Francium Factory for the Electron Electric Dipole Moment Search

,

Parity-Nonconserving Interaction-Induced Light Shifts in the \( \mathbf{{7S}}_{\mathbf{1/2}} \)–\( \mathbf{6 D}_{\mathbf{3/2}} \) Transition of the Ultracold \( ^{\mathbf{210}}{\mathbf{Fr}} \) Atoms to Probe New Physics Beyond the Standard Model

7p

Measurement of the 3-α decay from the Hoyle and the broad 10 MeV states in12C

^{2}{P}_{1/2,3/2}

Search for electron EDM with laser cooled radioactive atom

, and