Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Frontiers in Optics

Ionization Potentials of KRb, Rb2, and K2 and Triplet Rydberg States of the Ultracold KRb Molecule

J. T. Kim, Dajun Wang, W. C. Stwalley

Published Jan 1, 2006• 0 citations
Publisher

Abstract

Ionization potentials of the alkali diatomic molecules KRb, Rb2, and K2 have been investigated and experimental methods for exploring triplet Rydberg states from the metastable a3Σ+ state of ultracold KRb molecules are proposed.
DOI
10.1364/ls.2006.ltuh5

Related papers

Spectroscopy of39K85Rb triplet excited states using ultracold a3Σ+state molecules formed by photoassociation

J T Kim, Dajun Wang, Edward E. Eyler +2 more

Convenient state-selective detection methods are proposed for exploring triplet Rydberg states from the metastable a 3 Σ + state of ultracold KRb molecules by resonance-enhanced two-photon ionization and time-of-flight (TOF) mass spectroscopy. This would allow the first accurate determination of the ionization potential. Particularly suitable resonant intermediate states include the 2 3 Π Ω , 3 3 Σ + and 4 3 Σ + states, and we report spectroscopic studies of these states. For the 2 3 Π Ω state, the spin–orbit components (Ω = 0 + , 0 − , 1 and 2) have been investigated and a shallow long-range state (5(0 + )) at ∼ 9.3 Å has been observed. We compare our observations of these three states with predictions based on ab initio potential energy curves. Such studies may also permit the direct observation of autoionizing resonances leading to efficient formation of low-lying rovibrational levels of the 2 Σ + ground state of KRb + , ideally in the v + = 0, N + = 0 level.

New Journal of Physics•May 14, 2009•27 citations

Spectroscopy of Ultracold 39K85Rb Triplet Rydberg Molecules through the a3¿+ State formed by Photoassociation

J.T. Kim, Dajun Wang, Edward E. Eyler +2 more

We have observed vibrational levels of the 23П state and the 33Σ+state of39K85Rb through the a3Σ+state formed by photoassociation (PA) spectroscopy. Convenient state-selective detection methods for exploring triplet Rydberg states from the metastable a3Σ+state of ultracold KRb molecules by photoionization and time-of-flight mass spectroscopy are proposed.

Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR)•Aug 1, 2007•0 citations

Rydberg polyatomic molecules: Electronic structure and experimental proposal for their creation

Rosario González‐Férez, Seth T. Rittenhouse, Peter Schmelcher +1 more

Synopsis We describe the electronic structure and main features of ultralong range Rydberg molecules formed by a Rydberg atom, either Rb or K, and the heteronuclear diatomic molecule KRb. By analyzing their electronic structure, we propose a protocol to create these molecules experimentally from a mixture of ultracold atoms and ultracold molecules.

Journal of Physics Conference Series•Jan 1, 2020•0 citations

Photoassociative Formation, Spectroscopic Detection, and Magnetic Trapping of Ultracold KRb Molecules

Edward E. Eyler, Dajun Wang, P. L. Gould +1 more

We report on formation and state-selective detection of ultracold polar KRb molecules, and on magnetic trapping of the metastable a state. Resonant two-photon ionization spectra are analyzed to map the electronic structure and vibrational distributions.

Frontiers in Optics•Jan 1, 2005•0 citations

Ultralong-Range Rb-KRb Rydberg Molecules: Selected Aspects of Electronic Structure, Orientation and Alignment

Javier Aguilera-Fernández, H R Sadeghpour, Peter Schmelcher +1 more

We investigate the structure and features of an ultralong-range triatomic Rydberg molecule formed by a Rb Rydberg atom and a KRb diatomic molecule. In our numerical description, we perform a realistic treatment of the internal rotational motion of the diatomic molecule, and take into account the Rb( n , l ≥ 3) Rydberg degenerate manifold and the energetically closest neighboring levels with principal quantum numbers n ' > n and orbital quantum number l ≤ 2. We focus here on the adiabatic electronic potentials evolving from the Rb( n,l ≥ 3) and Rb( n = 26, l = 2) manifolds. The directional properties of the KRb diatomic molecule within the Rb-KRb triatomic Rydberg molecule are also analyzed in detail.

arXiv:1507.07972•Journal of Physics Conference Series•Sep 7, 2015•3 citations

Precision spectroscopy with ultracold 87Rb2 triplet molecules

Christoph Strauß

In this thesis I report precision spectroscopy with ultracold 87Rb2 triplet molecules where we use lasers to couple the states in different molecular potentials. We study in detail the lowest triplet states of Rb2. These states are of great importance for transferring weakly bound molecules to the ro-vibrational triplet ground state via states of the excited potential. As most experiments start from molecules in their singlet ground state, the triplet states were hard to access via dipole transitions and remained largely unexplored. The measurements presented in this thesis are the first detailed study of diatomic 87Rb2 molecules in these states.

•Jan 1, 2011•0 citations
Convenient state-selective detection methods are proposed for exploring triplet Rydberg states from the metastable a 3 Σ + state of ultracold KRb molecules by resonance-enhanced two-photon ionization and time-of-flight (TOF) mass spectroscopy. This would allow the first accurate determination of the ionization potential. Particularly suitable resonant intermediate states include the 2 3 Π Ω , 3 3 Σ + and 4 3 Σ + states, and we report spectroscopic studies of these states. For the 2 3 Π Ω state, the spin–orbit components (Ω = 0 + , 0 − , 1 and 2) have been investigated and a shallow long-range state (5(0 + )) at ∼ 9.3 Å has been observed. We compare our observations of these three states with predictions based on ab initio potential energy curves. Such studies may also permit the direct observation of autoionizing resonances leading to efficient formation of low-lying rovibrational levels of the 2 Σ + ground state of KRb + , ideally in the v + = 0, N + = 0 level.
We investigate the structure and features of an ultralong-range triatomic Rydberg molecule formed by a Rb Rydberg atom and a KRb diatomic molecule. In our numerical description, we perform a realistic treatment of the internal rotational motion of the diatomic molecule, and take into account the Rb( n , l ≥ 3) Rydberg degenerate manifold and the energetically closest neighboring levels with principal quantum numbers n ' > n and orbital quantum number l ≤ 2. We focus here on the adiabatic electronic potentials evolving from the Rb( n,l ≥ 3) and Rb( n = 26, l = 2) manifolds. The directional properties of the KRb diatomic molecule within the Rb-KRb triatomic Rydberg molecule are also analyzed in detail.
In this thesis I report precision spectroscopy with ultracold 87Rb2 triplet molecules where we use lasers to couple the states in different molecular potentials. We study in detail the lowest triplet states of Rb2. These states are of great importance for transferring weakly bound molecules to the ro-vibrational triplet ground state via states of the excited potential. As most experiments start from molecules in their singlet ground state, the triplet states were hard to access via dipole transitions and remained largely unexplored. The measurements presented in this thesis are the first detailed study of diatomic 87Rb2 molecules in these states.