Electrostatic velocity filtering is a technique for the production of continuous guided beams of slow polar molecules from a thermal gas. We extended this technique to produce pulses of slow molecules with a narrow velocity distribution around a tunable velocity. The pulses are generated by sequentially switching the voltages on adjacent segments of an electric quadrupole guide synchronously with the molecules propagating at the desired velocity. This technique is demonstrated for deuterated ammonia (ND ${}_{3}$ ), delivering pulses with a velocity in the range of $20\ensuremath{-}100$ m/s and a relative velocity spread of $(16\ifmmode\pm\else\textpm\fi{}2)%$ at full width at half maximum. At velocities around $60$ m/s, the pulses contain up to ${10}^{6}$ molecules each. The data are well reproduced by Monte Carlo simulations, which provide useful insight into the mechanisms of velocity selection.Electrostatic velocity filtering is a technique for the production of continuous guided beams of slow polar molecules from a thermal gas. We extended this technique to produce pulses of slow molecules with a narrow velocity distribution around a tunable velocity. The pulses are generated by sequentially switching the voltages on adjacent segments of an electric quadrupole guide synchronously with the molecules propagating at the desired velocity. This technique is demonstrated for deuterated ammonia (ND${}_{3}$), delivering pulses with a velocity in the range of $20\ensuremath{-}100$ m/s and a relative velocity spread of $(16\ifmmode\pm\else\textpm\fi{}2)%$ at full width at half maximum. At velocities around $60$ m/s, the pulses contain up to ${10}^{6}$ molecules each. The data are well reproduced by Monte Carlo simulations, which provide useful insight into the mechanisms of velocity selection.

arXiv:1004.0968Physical Review AJul 16, 201027 citations

Molecular collision studies with Stark-decelerated beams

Gerard Meijer

Bulletin of the American Physical SocietyMar 10, 20080 citations

Velocity selection of atomic beams in a laser field

A. D. Gazazyan, Razmik G. Unanyan

Journal of Experimental and Theoretical PhysicsDec 1, 19950 citations

Controllable surface electrostatic velocity filter for polar molecules

Shunyong Hou, Qin Lin Wang, Lianzhong Deng +1 more

We propose a scheme of a surface electrostatic velocity filter capable of preparing cold polar molecules on the surface of a substrate by selecting a low-velocity component of an effusive beam from a thermal gas reservoir. Using ND3 as a molecular sample, the dependence of the performance of the filter on the parameters of both the filter setup and the incident molecular beam is investigated by using a theoretical model and Monte Carlo simulations. A detailed study of the guiding process of molecules, including the evolution of phase space density of the packet in the filter, is carried out and shows that the beam selection process is mainly completed in the front part of the filter.We propose a scheme of a surface electrostatic velocity filter capable of preparing cold polar molecules on the surface of a substrate by selecting a low-velocity component of an effusive beam from a thermal gas reservoir. Using ND3 as a molecular sample, the dependence of the performance of the filter on the parameters of both the filter setup and the incident molecular beam is investigated by using a theoretical model and Monte Carlo simulations. A detailed study of the guiding process of molecules, including the evolution of phase space density of the packet in the filter, is carried out and shows that the beam selection process is mainly completed in the front part of the filter.

Journal of Physics B Atomic Molecular and Optical PhysicsJun 26, 20130 citations

Measurement of the three-dimensional velocity distribution of Stark-decelerated Rydberg atoms

E. Vliegen, Peter A. Limacher, Frédéric Merkt

The European Physical Journal DApr 27, 200626 citations

{}_{3}

), delivering pulses with a velocity in the range of $20\ensuremath{-}100$ m/s and a relative velocity spread of $(16\ifmmode\pm\else\textpm\fi{}2)%$ at full width at half maximum. At velocities around

60

m/s, the pulses contain up to

{10}^{6}

molecules each. The data are well reproduced by Monte Carlo simulations, which provide useful insight into the mechanisms of velocity selection.