766 citations · 3.5k across the 65 of their papers we have counts for
14 papers · 1 filter
Spectroscopy of high pressure rubidium-noble gas mixtures
Till Ockenfels, Paško Roje, Thilo vom Hövel +2
Spectroscopy of alkali-buffer gas mixtures at high pressures from single-digit to several 100 bars in the regime of substantial collisional broadening is relevant in a wide range o…
Sapphire optical viewport for high pressure and temperature applications
Till Ockenfels, Frank Vewinger, Martin Weitz
We describe the design of a soldered sapphire optical viewport, useful for spectroscopic applications of samples at high temperatures and high pressures. The sapphire window is bon…
Vacuum-Ultraviolet Absorption and Emission Spectroscopy of Gaseous, Liquid, and Supercritical Xenon
Christian Wahl, Marvin Hoffmann, Thilo vom Hoevel +2
Bose-Einstein condensation, an effect long known for material particles as cold atomic gases, has in recent years also been observed for photons in microscopic optical cavitites. H…
Bose-Einstein condensation of erbium atoms in a quasielectrostatic optical dipole trap
Jens Ulitzsch, Daniel Babik, Roberto Roell +1
Quantum gases of rare-earth elements are of interest due to the large magnetic moment of many of those elements, leading to strong dipole-dipole interactions, as well as an often n…
Absorption spectroscopy of xenon and ethylene-noble gas mixtures at high pressure: Towards Bose-Einstein condensation of vacuum ultraviolet photons
Christian Wahl, Rudolf Brausemann, Julian Schmitt +3
Bose-Einstein condensation is a phenomenon well known for material particles as cold atomic gases, and this concept has in recent years been extended to photons confined in microsc…
Resonance Retrieval of Stored Coherence in a Radiofrequency-optical Double Resonance Experiment
Vladimir Djokic, Georg Enzian, Frank Vewinger +1
We study the storage of coherences in atomic rubidium vapor with a three-level coupling scheme with two ground states and one electronically excited state driven by one optical (co…