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A: Fachverband Atomphysik
A 45: Velocity map imaging - focusing on intra- and interatomic dynamics SYPS 2 (with jDPG)
A 45.4: Vortrag
Donnerstag, 20. März 2014, 17:45–18:00, Audimax
Imaging Cold Molecules on a Chip — •Silvio Marx1, David Adu Smith1, Mark Abel1, Thomas Zehentbauer1, Gerard Meijer1,2, and Gabriele Santambrogio1 — 1Fritz-Haber-Institut der Max-Planck-Gesellschaft, Berlin, Germany — 2Radboud University of Nijmegen, Nijmegen, The Netherlands
We recently reported the manipulation of the external and internal degrees of freedom of cold molecules using a chip-based Stark decelerator. This comprised the trapping, guiding and deceleration of packets of polar molecules as well as the excitation of the molecules' rotational and vibrational degrees of freedom while they were on the chip. Now we present the final crucial component for a fully integrated molecule chip: on-chip detection.[1] By means of resonance-enhanced multiphoton ionization (REMPI) and ion optics we image the molecules in the microtraps of our chip and use this resolution to analyze the phase space distribution of the molecules. This is done by taking time-resolved snapshots of the molecules' ballistic expansion after release from their traps, in a similar fashion as for the time-of-flight imaging of atomic ensembles on atom chips. Moreover, with this detection method we investigate the effect of a phase-space manipulation sequence applied to the trapped molecules.
[1] S. Marx et al., Phys. Rev. Lett. 111, 243007 (2013)