title: Microwave lens for polar molecules.
abstract: We here report on the implementation of a microwave lens for neutral polar molecules suitable to focus molecules in both low-field-seeking and high-field-seeking states. By using the TE{11m} modes of a 12 cm long cylindrically symmetric microwave resonator, Stark-decelerated ammonia molecules are transversally confined. We investigate the focusing properties of this microwave lens as a function of the molecules' velocity, the microwave power, and the frequency detuning Δ from the molecular resonance. Such a microwave lens can be seen as a first important step towards further microwave devices, such as decelerators and traps.
authors.affiliation: Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, D-14195 Berlin, Germany.
authors.forename: Hitoshi
authors.initials: H
authors.lastname: Odashima
authors.forename: Simon
authors.initials: S
authors.lastname: Merz
authors.forename: Katsunari
authors.initials: K
authors.lastname: Enomoto
authors.forename: Melanie
authors.initials: M
authors.lastname: Schnell
authors.forename: Gerard
authors.initials: G
authors.lastname: Meijer