391 citations · 4.5k across the 81 of their papers we have counts for
38 papers · 1 filter
High-resolution isotope-shift spectroscopy of Cd I
Simon Hofsäss, J. Eduardo Padilla-Castillo, Sid C. Wright +6
We present absolute frequency measurements of the (nm) and (nm) transitions…
Cryogenic Buffer Gas beams of AlF, CaF, MgF, YbF, Al, Ca, Yb and NO -- a comparison
Sidney C. Wright, Maximilian Doppelbauer, Simon Hofsäss +4
Cryogenic buffer gas beams are central to many cold molecule experiments. Here, we use absorption and fluorescence spectroscopy to directly compare molecular beams of AlF, CaF, MgF…
Isotope Shifts in Cadmium as a Sensitive Probe for Physics Beyond the Standard Model
B. Ohayon, S. Hofsäss, J. E. Padilla-Castillo +5
Isotope shifts (ISs) in atomic energy levels are sensitive probes of nuclear structure and new physics beyond the Standard Model. We present an analysis of the ISs of the cadmium a…
Hyperfine resolved optical spectroscopy of the AX transition in MgF
M. Doppelbauer, S. C. Wright, S. Hofsäss +3
We report on hyperfine-resolved laser spectroscopy of the AX transition of MgF, relevant for laser cooling. We recorded 25 rotational transitions with an abs…
Spectroscopic characterization of aluminum monofluoride with relevance to laser cooling and trapping
S. Truppe, S. Marx, S. Kray +7
Here we report on spectroscopic measurements of the aluminum monofluoride molecule (AlF) that are relevant to laser cooling and trapping experiments. We measure the detailed energy…
Measuring and manipulating the temperature of cold molecules trapped on a chip
Silvio Marx, David Adu Smith, Boris G. Sartakov +2
We demonstrate the measurement and manipulation of the temperature of cold CO molecules in a microchip environment. Through the use of time-resolved spatial imaging, we are able to…
Imaging Cold Molecules on a Chip
S. Marx, D. Adu Smith, M. J. Abel +3
We present the integrated imaging of cold molecules in a microchip environment. The on-chip de- tection is based on REMPI, which is quantum-state-selective and generally applicable…
X-ray diffraction from isolated and strongly aligned gas-phase molecules with a free-electron laser
Jochen Küpper, Stephan Stern, Lotte Holmegaard +52
We report experimental results on x-ray diffraction of quantum-state-selected and strongly aligned ensembles of the prototypical asymmetric rotor molecule 2,5-diiodobenzonitrile us…
Alternating-Gradient Focusing of the Benzonitrile-Argon Van der Waals Complex
Stephan Putzke, Frank Filsinger, Jochen Küpper +1
We report on the focusing and guiding of the van der Waals complex formed between benzonitrile molecules (CHCN) and argon atoms in a cold molecular beam using an ac electri…
Traveling wave deceleration of heavy polar molecules in low-field seeking states
N. E. Bulleid, R. J. Hendricks, E. A. Hinds +4
We demonstrate the deceleration of heavy polar molecules in low-field seeking states by combining a cryogenic source and a travelling-wave Stark decelerator. The cryogenic source p…
Producing translationally cold, ground-state CO molecules
Janneke H. Blokland, Jens Riedel, Stephan Putzke +3
Carbon monoxide molecules in their electronic, vibrational, and rotational ground state are highly attractive for trapping experiments. The optical or ac electric traps that can be…
A traveling wave decelerator for neutral polar molecules
Samuel A. Meek, Maxwell F. Parsons, Georg Heyne +4
Recently, a decelerator for neutral polar molecules has been presented that operates on the basis of macroscopic, three-dimensional, traveling electrostatic traps (Osterwalder et a…
An electrostatic elliptical mirror for neutral polar molecules
A. Isabel González Flórez, Samuel A. Meek, Henrik Haak +3
Focusing optics for neutral molecules finds application in shaping and steering molecular beams. Here we present an electrostatic elliptical mirror for polar molecules consisting o…
Suppression of non-adiabatic losses of molecules from chip-based microtraps
Samuel A. Meek, Gabriele Santambrogio, Boris G. Sartakov +2
Polar molecules in selected quantum states can be guided, decelerated and trapped using electric fields created by microstructured electrodes on a chip. Here we explore how non-adi…
Driving rotational transitions in molecules on a chip
Gabriele Santambrogio, Samuel A. Meek, Mark J. Abel +2
Polar molecules in selected quantum states can be guided, decelerated, and trapped using electric fields created by microstructured electrodes on a chip. Here we explore how transi…
Low-energy inelastic collisions of OH radicals with He atoms and D molecules
Moritz Kirste, Ludwig Scharfenberg, Jacek Kłos +4
We present an experimental study on the rotational inelastic scattering of OH () radicals with He and D at collision energies between 100 and 500 cm$^{-1}…
Coherent reflection of He atom beams from rough surfaces at near-grazing incidence
Bum Suk Zhao, H. Christian Schewe, Gerard Meijer +1
We here report coherent reflection of thermal He atom beams from various microscopically rough surfaces at grazing incidence. For a sufficiently small normal component of the…
Emerging beam resonances in atom diffraction from a reflection grating
Bum Suk Zhao, Gerard Meijer, Wieland Schöllkopf
We report on the observation of emerging beam resonances, well known as Rayleigh-Wood anomalies and threshold resonances in photon and electron diffraction, respectively, in an ato…
Photoelectron angular distributions from strong-field ionization of oriented molecules
Lotte Holmegaard, Jonas L. Hansen, Line Kalhøj +9
The combination of photoelectron spectroscopy and ultrafast light sources is on track to set new standards for detailed interrogation of dynamics and reactivity of molecules. A cru…
Loading Stark-decelerated molecules into electrostatic quadrupole traps
Joop J. Gilijamse, Steven Hoekstra, Nicolas Vanhaecke +2
Beams of neutral polar molecules in a low-field seeking quantum state can be slowed down using a Stark decelerator, and can subsequently be loaded and confined in electrostatic qua…
Deceleration of neutral molecules in macroscopic traveling traps
Andreas Osterwalder, Samuel A. Meek, Georg Hammer +2
A new type of decelerator is presented where polar neutral molecules are guided and decelerated using the principle of traveling electric potential wells, such that molecules are c…
Manipulating the motion of large neutral molecules
Jochen Küpper, Frank Filsinger, Gerard Meijer
Large molecules have complex potential-energy surfaces with many local minima. They exhibit multiple stereo-isomers, even at very low temperatures. In this paper we discuss the dif…
Nonadiabatic transitions in electrostatically trapped ammonia molecules
Moritz Kirste, Boris Saratakov, Melanie Schnell +1
Nonadiabatic transitions are known to be major loss channels for atoms in magnetic traps, but have thus far not been experimentally reported upon for trapped molecules. We have obs…
Quantum reflection of helium atom beams from a microstructured grating
Bum Suk Zhao, Stephan A. Schulz, Samuel A. Meek +2
We observe high-resolution diffraction patterns of a thermal-energy helium-atom beam reflected from a microstructured surface grating at grazing incidence. The grating consists of…