Details
| Original language | English |
|---|---|
| Article number | 033103 |
| Journal | Physical Review A |
| Volume | 109 |
| Issue number | 3 |
| Publication status | Published - 4 Mar 2024 |
| Externally published | Yes |
Abstract
The twisted light modes used in modern atomic physics experiments can be contaminated by small admixtures of plane-wave radiation. Although these admixtures hardly reveal themselves in the beam-intensity profile, they may seriously affect the outcome of high-precision spectroscopy measurements. In the present study we propose a method for diagnosing such a plane-wave contamination which is based on the analysis of the magnetic sublevel population of atoms or ions interacting with the "twisted + plane-wave"radiation. In order to theoretically investigate the sublevel populations, we solve the Liouville-von Neumann equation for the time evolution of the atomic density matrix. The proposed method is illustrated for the electric dipole 5sS1/22-5pP3/22 transition in Rb induced by (linearly, radially, or azimuthally polarized) vortex light with just a small contamination. We find that even tiny admixtures of plane-wave radiation can lead to remarkable variations in the populations of the ground-state magnetic sublevels. This opens up new opportunities for diagnostics of twisted light in atomic spectroscopy experiments.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Atomic and Molecular Physics, and Optics
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In: Physical Review A, Vol. 109, No. 3, 033103, 04.03.2024.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Atomic photoexcitation as a tool for probing purity of twisted light modes
AU - Schmidt, R. P.
AU - Ramakrishna, S.
AU - Peshkov, A. A.
AU - Huntemann, N.
AU - Peik, E.
AU - Fritzsche, S.
AU - Surzhykov, A.
N1 - Publisher Copyright: © 2024 American Physical Society.
PY - 2024/3/4
Y1 - 2024/3/4
N2 - The twisted light modes used in modern atomic physics experiments can be contaminated by small admixtures of plane-wave radiation. Although these admixtures hardly reveal themselves in the beam-intensity profile, they may seriously affect the outcome of high-precision spectroscopy measurements. In the present study we propose a method for diagnosing such a plane-wave contamination which is based on the analysis of the magnetic sublevel population of atoms or ions interacting with the "twisted + plane-wave"radiation. In order to theoretically investigate the sublevel populations, we solve the Liouville-von Neumann equation for the time evolution of the atomic density matrix. The proposed method is illustrated for the electric dipole 5sS1/22-5pP3/22 transition in Rb induced by (linearly, radially, or azimuthally polarized) vortex light with just a small contamination. We find that even tiny admixtures of plane-wave radiation can lead to remarkable variations in the populations of the ground-state magnetic sublevels. This opens up new opportunities for diagnostics of twisted light in atomic spectroscopy experiments.
AB - The twisted light modes used in modern atomic physics experiments can be contaminated by small admixtures of plane-wave radiation. Although these admixtures hardly reveal themselves in the beam-intensity profile, they may seriously affect the outcome of high-precision spectroscopy measurements. In the present study we propose a method for diagnosing such a plane-wave contamination which is based on the analysis of the magnetic sublevel population of atoms or ions interacting with the "twisted + plane-wave"radiation. In order to theoretically investigate the sublevel populations, we solve the Liouville-von Neumann equation for the time evolution of the atomic density matrix. The proposed method is illustrated for the electric dipole 5sS1/22-5pP3/22 transition in Rb induced by (linearly, radially, or azimuthally polarized) vortex light with just a small contamination. We find that even tiny admixtures of plane-wave radiation can lead to remarkable variations in the populations of the ground-state magnetic sublevels. This opens up new opportunities for diagnostics of twisted light in atomic spectroscopy experiments.
UR - http://www.scopus.com/inward/record.url?scp=85186700809&partnerID=8YFLogxK
U2 - 10.1103/PhysRevA.109.033103
DO - 10.1103/PhysRevA.109.033103
M3 - Article
AN - SCOPUS:85186700809
VL - 109
JO - Physical Review A
JF - Physical Review A
SN - 2469-9926
IS - 3
M1 - 033103
ER -