Towards an 27Al+ ions optical clock
2014 European Frequency and Time Forum (EFTF)(2014)
Abstract
Magnesium ion which acts as the logic ion in
27
Al
+
ion optical clock is trapped and laser cooled in a linear ion trap. Rabi oscillation between two hyperfine ground states of
25
Mg
+
ion is observed and resonant frequency between two hyperfine ground states of
25
Mg
+
ion is measured. Earth magnetic field is compensated with three pairs of mutually perpendicular Helmholtz coils. Light shift induced by the Raman cooling beams is measured. With the photo-ionization laser of Al, Al
+
ion is trapped together with Mg
+
ion. The linewidth of the clock laser of the
27
Al
+
ion is measured to be about 0.8 Hz. The Allan deviation of the beat note from two independent lasers is 6.5×10
-15
at 1s.
MoreTranslated text
Key words
magnetic fields,resonant frequency
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