Electrostatic cage “Stark barrel” for rapidly switching a uniform electric field through arbitrary angles

Horn, Jamie; Homan, Dean; Hwang, C. S.; Fuqua, W. L.; MacAdam, K. B.

doi:10.1063/1.1149268

Cited by 8 publications

(5 citation statements)

References 9 publications

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“…where E and θ are, respectively, the magnitude and direction of E, d is the diameter of the Stark cage, α is a geometrical factor that corrects for the finite number of bars and for their finite lengths and diameters [14], and the bars are enumerated by the index j and have angular coordinates ϕ j . The Stark cage is placed coaxially inside a grounded metallic cylinder of inner diameter 52 mm.…”

Section: Stark Cage and Electromagnetmentioning

confidence: 99%

Dynamics of a single Rydberg shell in time dependent external fields*

Førre

Fregenal

Day

et al. 2002

J. Phys. B: At. Mol. Opt. Phys.

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Probabilities for adiabatic or near-adiabatic state transformation within a highly excited shell of Li(n = 25) were studied experimentally and theoretically for a time dependent electric field, E⃗(t), and a constant magnetic field, B⃗. The fields were sufficiently weak and the time dependence slow enough such that only states belonging to the chosen shell were involved. The studies show that the dynamics are governed by the approximate hydrogenic character of the system in most cases, but for some specific time dependences it is influenced strongly by core interactions as expressed through the quantum defects, δl. The s-state is effectively decoupled from the rest of the n = 25 manifold due to a very large quantum defect. However the quantum defects of the p, d and f states are shown to play a decisive role in the dynamics. The core interactions lead to avoided crossings, non-adiabatic state transformations, and possibly even phase-interference effects. When a resonance condition pertaining to the hydrogenic character of the system is fulfilled, a linear Stark state is transformed completely into a circular Stark state oriented along E⃗f.

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Section: Stark Cage and Electromagnetmentioning

confidence: 99%

Dynamics of a single Rydberg shell in time dependent external fields*

Førre

Fregenal

Day

et al. 2002

J. Phys. B: At. Mol. Opt. Phys.

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“…The time dependence of the field was then determined by the sizes of the apertures and the thickness, separations and potentials of the plates, but the field did not rotate or reverse direction in the reference frame of the ion. In the later experiments the Rydberg atom excitation and collision region was replaced by a cylindrical cage consisting of eight parallel rods to which suitable time-dependent potentials were applied (see [26] and figure 1, also [27]). The Li atoms moved upward along the axis of the cage where the field could be made quite homogeneous.…”

Section: Apparatus and Experimental Methodsmentioning

confidence: 99%

Charge transfer from coherent elliptic states

MacAdam

Horsdal-Pedersen²

2003

J. Phys. B: At. Mol. Opt. Phys.

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We present experimental data on charge transfer from coherent elliptic states of Rydberg atoms, which are oriented relative to the impact velocity vector of monoenergetic, singly charged ions. The data cover a broad range of scaled velocities around unity, selected angles of approach over the whole sphere, all eccentricities from zero to one and principal quantum numbers ranging from n = 20 to 35. The cross sections show good qualitative agreement with classical trajectory Monte Carlo calculations, but clear deviations are also observed.

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“…In the following, we discuss a rectangular configuration of several infinitely long, parallel metallic rods, extending in y direction [33], which allows to create electric fields in an arbitrary direction in the x-z plane (see figure 6). The rods are rectangularly arranged in the x-z plane with a horizontal and vertical spacing of 2 l 1 and 2 l 2 , respectively.…”

Section: Four Rodsmentioning

confidence: 99%

Versatile electric fields for the manipulation of ultracold NaK molecules

et al. 2016

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In this paper, we present an electrode geometry for the manipulation of ultracold, rovibrational ground state NaK molecules. The electrode system allows to induce a dipole moment in trapped diatomic NaK molecules with a magnitude up to 68% of their internal dipole moment along any direction in a given two-dimensional plane. The strength, the sign and the direction of the induced dipole moment is therefore fully tunable. The maximal relative variation of the electric field over the trapping volume is below 10 −6 . At the desired electric field value of 10 kV cm −1 this corresponds to a deviation of 0.01 V cm −1 . Furthermore, the possibility to create strong electric field gradients provides the opportunity to address molecules in single layers of an optical lattice. The electrode structure is made of transparent indium tin oxide and combines large optical access for sophisticated optical dipole traps and optical lattice configurations with the possibility to create versatile electric field configurations.

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Electrostatic cage “Stark barrel” for rapidly switching a uniform electric field through arbitrary angles

Cited by 8 publications

References 9 publications

Dynamics of a single Rydberg shell in time dependent external fields*

Dynamics of a single Rydberg shell in time dependent external fields*

Charge transfer from coherent elliptic states

Versatile electric fields for the manipulation of ultracold NaK molecules

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