High-resolution laser spectroscopy of ultracold ytterbium atoms using spin-forbidden electric quadrupole transition

Uetake, Satoshi; Yamaguchi, Atsushi; Hashimoto, Daisuke; Takahashi, Yoshiro

doi:10.1007/s00340-008-3225-x

Cited by 6 publications

(2 citation statements)

References 32 publications

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“…By choosing an appropriate wavelength of master laser and achieving sufficient stabilities of ambient conditions, the long-term stability of <1 MHz is feasible. Therefore the method demonstrated in this paper is suitable for various atomic physics experiments with alkali-like ions, alkaline-earth like atoms, or group-III atoms: such as Ca + (397 nm and 866 nm) [8,19], Yb (399 nm, 404 nm, 649 nm, 770 nm) [20], Ga (403 nm, 417 nm) [21,22], or In (410 nm, 451 nm) [23].…”

Section: Discussionmentioning

confidence: 99%

Frequency stability measurement of a transfer-cavity-stabilized diode laser by using an optical frequency comb

et al. 2009

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We report results of frequency stability measurements of an extended cavity diode laser (ECDL) whose frequency is stabilized by a non-evacuated scanning transfer cavity. The transfer cavity is locked to a commercial frequency stabilized helium-neon laser. Frequency stability is measured by use of an optical frequency comb. The environmental perturbations (variations of temperature, air pressure, and humidity) are also simultaneously measured. The observed frequency drift of the ECDL is well explained by environmental perturbations. An atmospheric pressure variation, which is difficult to control with a non-evacuated cavity, is mainly affected to the frequency stability. Thus we put the cavity into a simple O-ring sealed (non-evacuated) tube. With this simple O-ring sealed tube, the frequency drift is reduced by a factor of 3, and the Allan variance reaches a value of 2.4 × 10 −10 , corresponds to the frequency stability of 83 kHz, at the average time of 3000 s. Since the actual frequency drift is well estimated by simultaneous measurement of the ambient temperature, pressure, and humidity, a feed-forward compensation of frequency drifts is also feasible in order to achieve a higher frequency stability with a simple non-evacuated transfer cavity.

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Section: Discussionmentioning

confidence: 99%

Frequency stability measurement of a transfer-cavity-stabilized diode laser by using an optical frequency comb

et al. 2009

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“…For the light source for the absorption imaging, we used a GaN laser diode with a wave length of 399 nm and the frequency was stabilized by optical feedback with an extra cavity. 12) All experimental information was obtained through the absorption imaging. The total number of atoms obtained by integrating the absorption rates in an image.…”

Section: Absorption Imagingmentioning

confidence: 99%

Quantum Degenerate Gases of Ytterbium Atoms

Takasu

Takahashi

2009

J. Phys. Soc. Jpn.

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We describe in detail our recent experiments on quantum degenerate gases of ytterbium (Yb) atoms. Up to now Bose-Einstein condensates of 174 Yb and 170 Yb, and a Fermi degenerate gas of 173 Yb have been realized by efficient evaporative cooling in a crossed far-off resonant trap. Our studies showed that the efficient escape from the trap and rapid thermalization are important for efficient evaporative cooling. We also describe some recent experiments using Yb Bose-Einstein condensates such as the achievement of a scalar atom laser, the observation of an optical coherent transient, and successful loading into an optical lattice. Finally, the future prospects using Yb quantum degenerate gases are discussed in detail.

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Strongly interacting array of Bose-Einstein condensates trapped in a one-dimensional optical lattice

et al. 2013

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High-resolution laser spectroscopy of ultracold ytterbium atoms using spin-forbidden electric quadrupole transition

Cited by 6 publications

References 32 publications

Frequency stability measurement of a transfer-cavity-stabilized diode laser by using an optical frequency comb

Frequency stability measurement of a transfer-cavity-stabilized diode laser by using an optical frequency comb

Quantum Degenerate Gases of Ytterbium Atoms

Strongly interacting array of Bose-Einstein condensates trapped in a one-dimensional optical lattice

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