Magneto-optical trapping of Yb atoms and a limit on the branching ratio of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow /><mml:mrow><mml:mn>1</mml:mn></mml:mrow></mml:msup></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi>P</mml:mi></mml:mrow><mml:mrow><mml:mn>1</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>state

Honda, K.; Takahashi, Yoshiro; Kuwamoto, T.; Fujimoto, Masako; Toyoda, K.; Ishikawa, Kiyoshi; Yabuzaki, T.

doi:10.1103/physreva.59.r934

Cited by 78 publications

(55 citation statements)

References 10 publications

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“…limits the maximum MOT number to around 10 6 atoms. 63,64 Furthermore, the narrow 180 kHz width of the 556 nm line results in a very low Doppler temperature T D of 4.4 µK which facilitates the subsequent transfer to an optical trap. However, this narrow linewidth also results in a small MOT capture velocity, 65 which we find by numerical simulation of the MOT to be ⇠7 m s 1 for our highly power-broadened MOT beams (each has 13 mW in a 1/e 2 diameter of 25 mm leading to s = I/I sat ⇡ 40).…”

Section: Practical Considerations For Cs and Ybmentioning

confidence: 99%

A versatile dual-species Zeeman slower for caesium and ytterbium

Hopkins

Butler

Guttridge

et al. 2016

Review of Scientific Instruments

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We describe the design, construction and operation of a versatile dual-species Zeeman slower for both Cs and Yb, which is easily adaptable for use with other alkali metals and alkaline earths. With the aid of analytic models and numerical simulation of decelerator action, we highlight several real-world problems affecting the performance of a slower and discuss effective solutions. To capture Yb into a magneto-optical trap (MOT), we use the broad $^1S_0$ to $^1P_1$ transition at 399 nm for the slower and the narrow $^1S_0$ to $^3P_1$ intercombination line at 556 nm for the MOT. The Cs MOT and slower both use the D2 line ($6^2S_{1/2}$ to $6^2P_{3/2}$) at 852 nm. We demonstrate that within a few seconds the Zeeman slower loads more than $10^9$ Yb atoms and $10^8$ Cs atoms into their respective MOTs. These are ideal starting numbers for further experiments on ultracold mixtures and molecules.Comment: 15 pages, 15 figures, 4 tables, revtex4-

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Section: Practical Considerations For Cs and Ybmentioning

confidence: 99%

A versatile dual-species Zeeman slower for caesium and ytterbium

Hopkins

Butler

Guttridge

et al. 2016

Review of Scientific Instruments

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“…All other solutions involve a dual chamber arrangement in which a source chamber, containing some variation of the VCMOT source, is separated by a differential pumping channel from an ultra-high-vacuum (UHV) chamber in which the atoms are recaptured in a secondary MOT in preparation for experiments under UHV conditions . imum baking temperature of a conventional UHV system [12,28,29,30]. In the case of elements which are chemically reactive with glass, such as Li, a vapor cell is additionally impractical.…”

Section: Introductionmentioning

confidence: 99%

High-flux two-dimensional magneto-optical-trap source for cold lithium atoms

et al. 2009

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We demonstrate a novel 2D MOT beam source for cold 6 Li atoms. The source is side-loaded from an oven operated at temperatures in the range 600 T 700 K. The performance is analyzed by loading the atoms into a 3D MOT located 220 mm downstream from the source. The maximum recapture rate of ∼ 10 9 s −1 is obtained for T ≈ 700 K and results in a total of up to 10 10 trapped atoms. The recaptured fraction is estimated to be 30 ± 10% and limited by beam divergence. The most-probable velocity in the beam (αz) is varied from 18 to 70 m/s by increasing the intensity of a push beam. The source is quite monochromatic with a full-width at half maximum velocity spread of 11 m/s at αz = 36 m/s, demonstrating that side-loading completely eliminates beam contamination by hot vapor from the oven. We identify depletion of the low-velocity tail of the oven flux as the limiting loss mechanism. Our approach is suitable for other atomic species.

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“…Yb (Z=70) is an attractive candidate for studying atomic parity violation [4] and the search for a permanent electric-dipole moment in atoms [5]. Laser-cooled Yb has also been proposed for frequency-standards applications [6].…”

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confidence: 99%

Precise measurements of UV atomic lines: Hyperfine structure and isotope shifts in the 398.8 nm line of Yb

et al. 2003

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PACS. 32.30.Jc -Visible and ultraviolet spectra. PACS. 32.10.Fn -Fine and hyperfine structure. PACS. 42.62.Fi -Laser spectroscopy.Abstract. -We demonstrate a technique for frequency measurements of UV transitions with sub-MHz precision. The frequency is measured using a ring-cavity resonator whose length is calibrated against a reference laser locked to the D2 line of 87 Rb. We have used this to measure the 398.8 nm 1 S0 ↔ 1 P 1 line of atomic Yb. We report isotope shifts of all the seven stable isotopes, including the rarest isotope 168 Yb. We have been able to resolve the overlapping 173 Yb(F = 3/2) and 172 Yb transitions for the first time. We also obtain highprecision measurements of excited-state hyperfine structure in the odd isotopes, 171 Yb and 173 Yb. The measurements resolve several discrepancies among earlier measurements.Precise measurements of the frequencies of atomic transitions are an important tool in expanding our knowledge of physics. For example, precise measurement of the D 1 line in Cs [1] combined with an atom-interferometric measurement of the photon recoil shift [2] could lead to a more accurate determination of the fine-structure constant α. In addition, hyperfinestructure and isotope-shift measurements in atomic lines can help in fine-tuning the atomic wavefunction, particularly due to contributions from nuclear interactions. This is important when comparing theoretical calculations with experimental data in atomic studies of parity violation [3]. The most precise optical frequency measurements to date have been done using the recently developed frequency-comb method with mode-locked lasers [1], with errors below 100 kHz being reported. However, to the best of our knowledge, this technique has not yet been applied to UV spectroscopy, which relies on older and less-accurate techniques.In this Letter, we present the most comprehensive study of the 398.8 nm 1 S 0 ↔ 1 P 1 line of atomic Yb. Yb (Z=70) is an attractive candidate for studying atomic parity violation [4] and the search for a permanent electric-dipole moment in atoms [5]. Laser-cooled Yb has also been proposed for frequency-standards applications [6]. The 1 S 0 ↔ 1 P 1 line is widely used in laser-cooling experiments [5,7]. Over the years, there has been much interest in this line, and its isotopic and hyperfine components have been measured using a variety of techniques -level-crossing and anti-crossing spectroscopy [8,9,10], Fabry-Perot cavity [11], saturatedabsorption spectroscopy [12], photon-burst spectroscopy [13], and most recently using optical

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Magneto-optical trapping of Yb atoms and a limit on the branching ratio of the1P1state

Cited by 78 publications

References 10 publications

A versatile dual-species Zeeman slower for caesium and ytterbium

A versatile dual-species Zeeman slower for caesium and ytterbium

High-flux two-dimensional magneto-optical-trap source for cold lithium atoms

Precise measurements of UV atomic lines: Hyperfine structure and isotope shifts in the 398.8 nm line of Yb

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