Experimental Demonstration of a Controllable Electrostatic Molecular Beam Splitter

Deng, Lianzhong; Liang, Yan; Gu, Zhenxing; Hou, Shifeng; Li, Shengqiang; Xia, Yong; Yin, Jianping

doi:10.1103/physrevlett.106.140401

Cited by 17 publications

(14 citation statements)

References 15 publications

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“…In a previous experiment, a microscopic beam splitter on a chip has been demonstrated. [20,21] The dimensions of the present, macroscopic, beam splitter match those of most molecular beams experiments and can be used for new types of differential measurement experiments. For example, one molecular beam can be used as a reference beam while the other is manipulated according to the experimental requirements.…”

Section: Introductionmentioning

confidence: 78%

3D-Printed Beam Splitter for Polar Neutral Molecules

Gordon

Osterwalder

2017

Phys. Rev. Applied

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We describe a macroscopic beam splitter for polar neutral molecules. A complex electrode structure is required for the beam splitter which would be very difficult to produce with traditional manufacturing methods. Instead, we make use of a nascent manufacturing technique: 3D printing of a plastic piece, followed by electroplating. This fabrication method opens a plethora of avenues for research, since 3D printing imposes practically no limitations on possible shapes, and the plating produces chemically robust, conductive construction elements with an almost free choice of surface material; it has the added advantage of dramatically reduced production cost and time. Our beam splitter is an electrostatic hexapole guide that smoothly transforms into two bent quadrupoles. We demonstrate the correct functioning of this device by separating a supersonic molecular beam of ND 3 into two correlated fractions. It is shown that this device can be used to implement experiments with differential detection wherein one of the fractions serves as a probe and the other as a reference. Reverse operation would allow to merging of two beams of neutral polar molecules.

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Section: Introductionmentioning

confidence: 78%

3D-Printed Beam Splitter for Polar Neutral Molecules

Gordon

Osterwalder

2017

Phys. Rev. Applied

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“…This concept was proposed by Sekatskii [27,28] and Loesch [29] and experimentally demonstrated by Loesch and Scheel [30]. Recently, guiding of polar molecules in surface-based electrostatic potentials has been demonstrated [31,32].…”

Section: Introductionmentioning

confidence: 97%

Guiding slow polar molecules with a charged wire

et al. 2011

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We demonstrate experimentally the guiding of cold and slow ND3 molecules along a thin charged wire over a distance of ~0.34 m through an entire molecular beam apparatus. Trajectory simulations confirm that both linear and quadratic high-field-seeking Stark states can be efficiently guided from the beam source up to the detector. A density enhancement up to a factor 7 is reached for decelerated beams with velocities ranging down to ~50 m/s generated by the rotating nozzle technique

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“…For example, one can study the heating effect on trapped molecules of the surface temperature [21]. There are some excellent experiments guiding [22,23], decelerating [24,25], or even trapping [26] molecules on a chip surface. In 2010 we proposed a scheme of electrostatic surface storage ring for cold polar molecules [27].…”

Section: Introductionmentioning

confidence: 99%

Controllable electrostatic surface storage ring with opened optical access for cold polar molecules on a chip

Deng

et al. 2013

J. Opt. Soc. Am. B

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In order to meet the demands for laser manipulations and detection of cold molecules, we propose an optically accessible and controllable electrostatic surface storage ring for cold polar molecules on a chip, which is one based on extension and application of the three-wire surface guiding scheme [J. Opt. Soc. Am. B 25, 1214]. To our knowledge, this is the first real surface storage ring scheme. The spatial distribution of the electrostatic fields generated by two insulator-embedded charged rings and a grounded conductor plate is numerically calculated. Relationships between the height of the trap center above the surface and the setup parameters are analyzed in detail. Using OH radical molecules as a tester, the range of molecular velocities that the storage ring can confine is investigated. The dynamical process of weak-field-seeking OH molecules of state jJ; KMi j3∕2; − 9∕4i being loaded into and confined in the storage ring is studied using Monte Carlo simulations. Dependencies of translational temperature of molecules and their trapping efficiency in the storage ring on parameters of the setup and the initial molecular beam are examined. By incorporating a bunching function into our scheme, the number of round trips a trapped molecular packet makes can be improved by almost three times before getting spread out to fill the whole storage ring, as confirmed by numerical simulations.

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Experimental Demonstration of a Controllable Electrostatic Molecular Beam Splitter

Cited by 17 publications

References 15 publications

3D-Printed Beam Splitter for Polar Neutral Molecules

3D-Printed Beam Splitter for Polar Neutral Molecules

Guiding slow polar molecules with a charged wire

Controllable electrostatic surface storage ring with opened optical access for cold polar molecules on a chip

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