Results 31 to 40 of about 951 (142)
High-precision spectroscopy of ultracold molecules in an optical lattice
New Journal of Physics, 2015 The study of ultracold molecules tightly trapped in an optical lattice can expand the frontier of precision measurement and spectroscopy, and provide a deeper insight into molecular and fundamental physics.
B H McGuyer +6 more
doaj +1 more source
Photoassociation experiments on ultracold and quantum gases in optical lattices [PDF]
, 2004 textThis thesis describes the results of several experiments that studied the photoassociation of an ultracold atomic Rb gas. In the first experiment, we produced ultracold diatomic molecules from an atomic gas via single-color photoassociation.
Ryu, Changhyun
core +3 more sources
Photoassociation spectroscopy of cold He(2(3)S) atoms [PDF]
, 2000 We observe vibrational states by photoassociation spectroscopy of cold He(2 3S) atoms. Photoassociation resonances are detected as peaks in the Penning ionization rate over a frequency range of 20 GHz below the atomic 2 3S1-2 3P2 transition frequency. We
Tol, P.J.J. +12 more
core +3 more sources
Detecting high-density ultracold molecules using atom–molecule collision
New Journal of Physics, 2013 Utilizing single-photon photoassociation, we have achieved ultracold rubidium molecules with a high number density that provides a new efficient approach toward molecular quantum degeneracy.
Jun-Ren Chen +3 more
doaj +1 more source
Time-independent and time-dependent photoassociation of spin-polarized rubidium
, 1999 We extract information about collisions of ultra-cold ground-state rubidium atoms from observations of a g-wave shape resonance in the 85Rb + 85Rb system via time-independent and time-dependent photoassociation.
Verhaar, B.J. +4 more
core +1 more source
Quantum defect theory description of weakly bound levels and Feshbach resonances in LiRb
New Journal of Physics, 2015 The multichannel quantum defect theory (MQDT) in combination with the frame transformation (FT) approach is applied to model the Fano–Feshbach resonances measured for ^7 Li ^87 Rb and ^6 Li ^87 Rb Marzok et al (2009 Phys. Rev. A http://dx.doi.org/10.1103/
Jesús Pérez-Ríos +3 more
doaj +1 more source
Pair Correlations and Photoassociation Dynamics of Two Atoms in an Optical Tweezer
, 2022 We investigate the photoassociation dynamics of exactly two laser-cooled Rb85 atoms in an optical tweezer and reveal fundamentally different behavior to photoassociation in many-atom ensembles.
Hobbs, R A B +5 more
core +1 more source
Photoassociation of metastable helium
, 2005 A theoretical study is performed for the photoassociation of metastable helium. Combining short-range, high-level, ab initio calculations for ${}^5\Sigma_{g/u}^+$ and ${}^5\Pi_{g/u}$ symmetries and long-range behaviour, better described in Hund's case ...
F. X. Gadéa +2 more
core +1 more source
New Journal of Physics, 2020 Experiments with cold ion–atom mixtures have recently opened the way for the production and application of ultracold molecular ions. Here, in a comparative study, we theoretically investigate ground and several excited electronic states and prospects for
Wissem Zrafi +4 more
doaj +1 more source
Applied Sciences, 2019 We report the preparation of a 780.2 nm and 852.3 nm laser device based on single-pass periodically poled magnesium-oxide-doped lithium niobate (PPMgO:LN) bulk crystals and diode-laser-seeded fiber amplifiers.
Kong Zhang, Jun He, Junmin Wang
doaj +1 more source