Add to ORKGThe National Institute of Information and Communications Technology is developing an optical frequency standard using the 4 2S1/2- 3 2D5/2 quadrupole transition of single 40Ca+ ions. After our first transition observation, we improved vacuum pressure of the chamber and introduced a pulse-light sequence system to the spectroscopy. We observed the Zeeman components of the quadrupole transition with linewidths of <25 kHz. The absolute frequency of the unperturbed line was calculated from the symmetrical pairs of the Zeeman components by canceling the first-order Zeeman shift. It was preliminarily evaluated to be 411 042 129 779.2 ±1.5 kHz. 1
We report absolute frequencymeasurements of the a1, a10, and a15 hyperfine components of molecular i...
The authors report on the current status of the optical frequency standard based on a single 115In+ ...
Spectroscopy of the 411-nm transition in 171Yb+ has been performed and the feasibility of its use as...
International audienceWe report on the first absolute transition frequency measurement at the 10-15 ...
We report an absolute frequency measurement of the optical clock transition at 657 nm in 40Ca with a...
The hyperfine structure of the S1/2-D5/2 quadrupole transition at 729 nm in 43Ca+ has been investiga...
We describe experimental investigations on an optical frequency standard based on a laser cooled 171...
An absolute frequency measurement has been made of the 2S1/2–2F7/2 electric octupole transition in a...
We describe experiments with an optical frequency standard based on a laser cooled $^{171}$Yb$^+$ io...
Due to the scaling laws of relativistic fine structure splitting, many forbidden optical transitions...
We explore the potential of the electric quadrupole transitions 7s (2)S(1/2)-(6)d (2)D(3/2), 6d (2)D...
International audienceThe ytterbium atom is widely used in the fields of atomic physics, cavity quan...
Optical frequency standards offer the possibility of a step improvement of up to two orders of magni...
Experiments directed toward the realization of frequency standards of high accuracy using stored ion...
Frequency shifts of the 199Hg+ 5d 106s 2S1/2 (F = 0, MF = 0) to 5d 96s 2 2D5/2 (F = 2, MF = 0) elect...
We report absolute frequencymeasurements of the a1, a10, and a15 hyperfine components of molecular i...
The authors report on the current status of the optical frequency standard based on a single 115In+ ...
Spectroscopy of the 411-nm transition in 171Yb+ has been performed and the feasibility of its use as...
International audienceWe report on the first absolute transition frequency measurement at the 10-15 ...
We report an absolute frequency measurement of the optical clock transition at 657 nm in 40Ca with a...
The hyperfine structure of the S1/2-D5/2 quadrupole transition at 729 nm in 43Ca+ has been investiga...
We describe experimental investigations on an optical frequency standard based on a laser cooled 171...
An absolute frequency measurement has been made of the 2S1/2–2F7/2 electric octupole transition in a...
We describe experiments with an optical frequency standard based on a laser cooled $^{171}$Yb$^+$ io...
Due to the scaling laws of relativistic fine structure splitting, many forbidden optical transitions...
We explore the potential of the electric quadrupole transitions 7s (2)S(1/2)-(6)d (2)D(3/2), 6d (2)D...
International audienceThe ytterbium atom is widely used in the fields of atomic physics, cavity quan...
Optical frequency standards offer the possibility of a step improvement of up to two orders of magni...
Experiments directed toward the realization of frequency standards of high accuracy using stored ion...
Frequency shifts of the 199Hg+ 5d 106s 2S1/2 (F = 0, MF = 0) to 5d 96s 2 2D5/2 (F = 2, MF = 0) elect...
We report absolute frequencymeasurements of the a1, a10, and a15 hyperfine components of molecular i...
The authors report on the current status of the optical frequency standard based on a single 115In+ ...
Spectroscopy of the 411-nm transition in 171Yb+ has been performed and the feasibility of its use as...