Wall, TE;
Cassidy, DB;
Hogan, SD;
(2014)
Single-color two-photon spectroscopy of Rydberg states in electric fields.
PHYSICAL REVIEW A
, 90
(5)
, Article ARTN 053430. 10.1103/PhysRevA.90.053430.
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Abstract
Rydberg states of atomic helium with principal quantum numbers ranging from n=20 to n=100 have been prepared by non-resonance-enhanced single-color two-photon excitation from the metastable 23S1 state. Photoexcitation was carried out using linearly and circularly polarized pulsed laser radiation. In the case of excitation with circularly polarized radiation, Rydberg states with azimuthal quantum number |mℓ|=2 were prepared in zero electric field and in homogeneous electric fields oriented parallel to the propagation axis of the laser radiation. In sufficiently strong electric fields, individual Rydberg–Stark states were resolved spectroscopically, highlighting the suitability of non-resonance-enhanced multiphoton excitation schemes for the preparation of long-lived high-|mℓ| hydrogenic Rydberg states for deceleration and trapping experiments. Applications of similar schemes for Doppler-free excitation of positronium atoms to Rydberg states are also discussed.
| Type: | Article |
|---|---|
| Title: | Single-color two-photon spectroscopy of Rydberg states in electric fields |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevA.90.053430 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevA.90.053430 |
| Language: | English |
| Additional information: | This article is available under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1456701 |
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