Resonance ionization spectroscopy of sodium Rydberg levels using difference frequency generation of high-repetition-rate pulsed Ti:sapphire lasers

Naubereit, P.; Marín-Sáez, Julia; Schneider, F.; Hakimi, Amin; Franzmann, Michael; Kron, T.; Richter, Sven; Wendt, Κ.

doi:10.1103/physreva.93.052518

Cited by 7 publications

(3 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…One problem to efficiently excite the Rydberg P states might be their small transition probability. Other authors did not observe higher order transitions into the P-Rydberg states originating from the 3 2 D states 39 , 40 . Instead, the Rydberg P states are significantly weaker than the reported F states 40 , which are nicely resolved in ionization experiments.…”

Section: Discussionmentioning

confidence: 89%

Two Step Excitation in Hot Atomic Sodium Vapor

Docters

Wrachtrup

Gerhardt

2017

Sci Rep

View full text Add to dashboard Cite

A two step excitation scheme in hot atomic sodium vapor is experimentally investigated. The observed effects reflect a coupling between the 32S, 32P and the 32D states. We present the relative dependence on detuning of the two utilized lasers around λ = 589 nm and 819 nm. Unlike expected, we achieve a higher detuning dependence of the probe and the coupling laser by a factor of approximately three. The presented work aimed for a Rydberg excitation and quantum light storage. Such schemes are usually implemented with a red laser on the D-line transition and a coupling laser of shorter (typically blue) wavelength. Due to the fact that higher P-Rydberg states are approximately two times higher in energy than the 32D state, a two photon transition from the atomic excited 32P state to a Rydberg P state is feasible. This might circumvent laser frequency doubling whereby only two lasers might mediate a three photon process. The scheme of adding three k-vectors allows for electromagnetically induced transparency experiments in which the resulting k-vector can be effectively reduced to zero. By measurements utilizing electric fields and an analysis of the emission spectrum of the atomic vapor, we can exclude the excitation of the P-P two photon transition.

show abstract

Section: Discussionmentioning

confidence: 89%

Two Step Excitation in Hot Atomic Sodium Vapor

Docters

Wrachtrup

Gerhardt

2017

Sci Rep

View full text Add to dashboard Cite

show abstract

“…Finally, a channel electron multiplier detector provides quantitative ion registration on a single ion level (see Fig. 2) [12].…”

Section: Methodsmentioning

confidence: 99%

Laser resonance ionization spectroscopy on lutetium for the MEDICIS project

et al. 2017

Self Cite

View full text Add to dashboard Cite

The MEDICIS-PROMED Innovative Training Network under the Horizon 2020 EU program aims to establish a network of early stage researchers, involving scientific exchange and active cooperation between leading European research institutions, universities, hospitals, and industry. Primary scientific goal is the purpose of providing and testing novel radioisotopes for nuclear medical imaging and radionuclide therapy. Within a closely linked project at CERN, a dedicated electromagnetic mass separator system is presently under installation for production of innovative radiopharmaceutical isotopes at the new CERN-MEDICIS laboratory, directly adjacent to the existing CERN-ISOLDE radioactive ion beam facility. It is planned to implement a resonance ionization laser ion source (RILIS) to ensure high efficiency and unrivaled purity in the production of radioactive ions. To provide a highly efficient ionization process, identification and characterization of a specific multi-step laser ionization scheme for each individual element with isotopes of interest is required. The element lutetium is of primary relevance, and therefore was considered as first candidate. Three two-step excitation schemes for lutetium atoms are presented in this work, and spectroscopic results are compared with data of other authors.

show abstract

“…During the last five decades, SRS, resulting from a photon-phonon inelastic interaction in Raman-active media [5], has established itself as a versatile method to generate wavelengths that are otherwise difficult to produce. When compared to optical parametric oscillators (OPOs) and other nonlinear (often tedious and inefficient) conversion techniques like frequency mixing (see e.g., [6]), Raman lasers are simple to construct, do not require management of phase matching, and can be operated at any chosen repetition rate [7].…”

mentioning

confidence: 99%