5 papers · 1 filter
Letokhov-Chebotayev intracavity trapping spectroscopy of H
Wim Ubachs, Frank M. J. Cozijn, Meissa L. Diouf +3
In the early days of laser spectroscopy Letokhov and Chebotayev proposed a scheme for measuring narrow spectral lines where the resolution is not restricted to Doppler effects beca…
Quantum calculation of the collision-induced line-shape effects in antiprotonic helium and the new accurate ab initio He-He potential energy surface
Hubert J. Jóźwiak, Dimitar Bakalov, Michał Przybytek +2
We present the first fully ab initio calculations of collision-induced broadening and shift of spectral lines in antiprotonic helium (He) perturbed by atomic helium.…
Phase space quantum mechanics of a free particle moving in a plane
Hubert Jóźwiak, Jaromir Tosiek
The eigenstates of a free quantum particle propagating in a plane are derived in the context of phase space quantum mechanics. Two possibilities are analysed. First, the case of a…
New beyond-Voigt line-shape profile recommended for the HITRAN database
P. Wcisło, N. Stolarczyk, M. Słowiński +20
Parameters associated with the collisional perturbation of spectral lines are essential for modeling the absorption of electromagnetic radiation in gas media. The HITRAN molecular…
Cavity-enhanced spectroscopy in the deep cryogenic regime -- new hydrogen technologies for quantum sensing
Kamil Stankiewicz, Marcin Makowski, Michał Słowiński +13
Spectrometers based on high-finesse optical cavities have proven to be powerful tools for applied and fundamental studies. Extending this technology to the deep cryogenic regime is…