Magneto-optical trap for thulium atoms

Sukachev, Denis D.; Соколов, А. В.; Chebakov, K.; Акимов, А. В.; Kanorsky, S. I.; Kolachevsky, Nikolai N.; Сорокин, В. Н.

doi:10.1103/physreva.82.011405

Cited by 93 publications

(94 citation statements)

References 32 publications

(47 reference statements)

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“…The fluorescence at steady-state was proportional to the number of atoms in the MOT. In contrast to alkali atoms, Tm MOT at 410.6 nm normally can operate without a repumping laser [1] because the cooling radiation acts as a repumper itself and return atoms which were optically pumped to F = 3 back to F = 4 via F = 4.…”

Section: Spectroscopy In the Tm Magneto-optical Trapmentioning

confidence: 99%

“…In the current setup we used low modulation frequency ω m < Γ and small modulation index M ≈ 0. 1 1, that allows to describe the observed signals in terms of a steady-state absorption function α(ω) [17]. If the phase of the laser beam is modulated…”

Section: The Line Shape Modelmentioning

confidence: 99%

“…Along with some other lanthanides Tm possesses a large ground state magnetic moment of 4 Bohr magnetons, that makes ultracold Tm atoms an attractive object for study of dipolar interactions [1]. Besides that Tm has a narrow magnetic-dipole transition at 1.14 µm which makes it a favorable candidate for optical clock applications [2,3].…”

Section: Introductionmentioning

confidence: 99%

“…I) [1]. We irradiated the atoms trapped in the operating "blue" MOT with 30 mW (10 W/cm 2 ) of 530.7 nm laser (second harmonic of Toptica DL-pro) and recorded the fluorescence signal at 410.6 nm by photomultiplier tube (See fig.…”

Section: Spectroscopy In the Tm Magneto-optical Trapmentioning

confidence: 99%

“…hA J (F (F + 1) − I(I + 1) − J(J + 1)) , (1) where is the reduced Planck constant, F and J are the total atom and electron moments, correspondingly. The hyperfine (HF) structure of Tm atoms was extensively studied with a variety of techniques.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Improved measurement of the hyperfine structure of the laser cooling level $$4f^{12}(^3H_6)5d_{5/2}6s^2$$ 4 f 12 ( 3 H 6 ) 5 d 5 / 2 6 s 2 $$(J=9/2)$$ ( J = 9 / 2 ) in $${}^{169}_{\,\,69}{{\mathrm {Tm}}}$$ 69 169 Tm

et al. 2015

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Improved measurement of the hyperfine structure of the laser cooling level 4f 12 ( 3 H 6 )5d 5/2 6s 2 (J = 9/2) in 169 Tm We report on the improved measurement of the hyperfine structure of 4f 12 ( 3 H6)5d 5/2 6s 2 (J = 9/2) excited state in Tm-169 which is involved in the second-stage laser cooling of Tm. To measure the absolute value of the hyperfine splitting interval we used Doppler-free frequency modulation saturated absorption spectroscopy of Tm atoms in a vapor cell. The sign of the hyperfine constant was determined independently by spectroscopy of laser cooled Tm atoms. The hyperfine constant of the level equals AJ = −422.112(32) MHz that corresponds to the energy difference between two hyperfine sublevels of −2110.56(16) MHz. In relation to the saturated absorption measurement we quantitatively treat contributions of various mechanisms into the line broadening and shift. We consider power broadening in the case when Zeeman sublevels of atomic levels are taken into account. We also discuss the line broadening due to frequency modulation and relative intensities of transitions in saturated-absorption experiments.

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Section: Spectroscopy In the Tm Magneto-optical Trapmentioning

confidence: 99%

Section: The Line Shape Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Spectroscopy In the Tm Magneto-optical Trapmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Improved measurement of the hyperfine structure of the laser cooling level $$4f^{12}(^3H_6)5d_{5/2}6s^2$$ 4 f 12 ( 3 H 6 ) 5 d 5 / 2 6 s 2 $$(J=9/2)$$ ( J = 9 / 2 ) in $${}^{169}_{\,\,69}{{\mathrm {Tm}}}$$ 69 169 Tm

et al. 2015

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Simulating quantum magnets with symmetric top molecules

2013

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We establish a correspondence between the electric dipole matrix elements of a polyatomic symmetric top molecule in a state with nonzero projection of the total angular momentum on the symmetry axis of the molecule and the magnetic dipole matrix elements of a magnetic dipole associated with an elemental spin $F$. It is shown that this correspondence makes it possible to perform quantum simulation of the single-particle spectrum and the dipole-dipole interactions of magnetic dipoles in a static external magnetic field $\bf{B}$ with symmetric top molecules subject to a static external electric field $\bf{E}_{\mathrm{DC}}$. We further show that no such correspondence exists for $^1\Sigma$ molecules in static fields, such as the alkali metal dimers. The effective spin angular momentum of the simulated magnetic dipole corresponds to the rotational angular momentum of the symmetric top molecule, and so quantum simulation of arbitrarily large integer spins is possible. Further, taking the molecule CH$_3$F as an example, we show that the characteristic dipole-dipole interaction energies of the simulated magnetic dipole are a factor of 620, 600, and 310 larger than for the highly magnetic atoms Chromium, Erbium, and Dysprosium, respectively. We present several applications of our correspondence for many-body physics, including long-range and anisotropic spin models with arbitrary integer spin $S$ using symmetric top molecules in optical lattices, quantum simulation of molecular magnets, and spontaneous demagnetization of Bose-Einstein condensates due to dipole-dipole interactions. Our results are expected to be relevant as cold symmetric top molecules reach quantum degeneracy through Stark deceleration and opto-electrical cooling.Comment: 28 pages, 3 figures, submitted to the special issue of Annalen der Physik on "Quantum Simulation"; v2: revised in response to referees' comment

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Doppler-free frequency-modulation spectroscopy of atomic erbium in a hollow-cathode discharge cell

et al. 2011

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The erbium atomic system is a promising candidate for an atomic Bose-Einstein condensate of atoms with a non-vanishing orbital angular momentum (L = 0) of the electronic ground state. In this paper we report on the frequency stabilization of a blue external cavity diode laser system on the 400.91 nm laser cooling transition of atomic erbium. Doppler-free saturation spectroscopy is applied within a hollow cathode discharge tube to the corresponding electronic transition of several of the erbium isotopes. Using the technique of frequency modulation spectroscopy, a zero-crossing error signal is produced to lock the diode laser frequency on the atomic erbium resonance. The latter is taken as a reference laser to which a second main laser system, used for laser cooling of atomic erbium, is frequency stabilized.

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Magneto-optical trap for thulium atoms

Cited by 93 publications

References 32 publications

Improved measurement of the hyperfine structure of the laser cooling level $$4f^{12}(^3H_6)5d_{5/2}6s^2$$ 4 f 12 ( 3 H 6 ) 5 d 5 / 2 6 s 2 $$(J=9/2)$$ ( J = 9 / 2 ) in $${}^{169}_{\,\,69}{{\mathrm {Tm}}}$$ 69 169 Tm

Improved measurement of the hyperfine structure of the laser cooling level $$4f^{12}(^3H_6)5d_{5/2}6s^2$$ 4 f 12 ( 3 H 6 ) 5 d 5 / 2 6 s 2 $$(J=9/2)$$ ( J = 9 / 2 ) in $${}^{169}_{\,\,69}{{\mathrm {Tm}}}$$ 69 169 Tm

Simulating quantum magnets with symmetric top molecules

Doppler-free frequency-modulation spectroscopy of atomic erbium in a hollow-cathode discharge cell

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