Doppler-free selective reflection spectroscopy of electric-quadrupole transitions

Fuente: arXiv
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Main Authors: Chan, Eng Aik, Aljunid, Syed Abdullah, Laliotis, Athanasios, Wilkowski, David, Ducloy, Martial
Format: Preprint
Published: 2024
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_version_ 1866914951885488128
author Chan, Eng Aik
Aljunid, Syed Abdullah
Laliotis, Athanasios
Wilkowski, David
Ducloy, Martial
author_facet Chan, Eng Aik
Aljunid, Syed Abdullah
Laliotis, Athanasios
Wilkowski, David
Ducloy, Martial
contents Electric-dipole-forbidden transitions play an important role as in quantum sensing, quantum information, and fundamental test in physics. As such, the development of novel and sensitive spectroscopic methods is of major interest. Here, we present a Doppler-free selective reflection experiment on the 6S1/2 --> 5D5/2 electric-quadrupole transition of cesium vapor at the vicinity of a sapphire window. This is achieved by a precision experiment overcoming limitations due to the small signal amplitude of forbidden transitions. Narrow sub-Doppler lines allow for a collisional broadening measurement on the electric-quadrupole line. The interaction of cesium atoms with the sapphire surface of the cell is evidenced, but, due to its weak contribution, a quantitative analysis remains challenging. Nevertheless, our experiment paves the way for further studies of the Casimir-Polder interaction between exotic excited-state atoms and dielectric surfaces.
format Preprint
id arxiv_https___arxiv_org_abs_2409_12017
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle Doppler-free selective reflection spectroscopy of electric-quadrupole transitions
Chan, Eng Aik
Aljunid, Syed Abdullah
Laliotis, Athanasios
Wilkowski, David
Ducloy, Martial
Atomic Physics
Electric-dipole-forbidden transitions play an important role as in quantum sensing, quantum information, and fundamental test in physics. As such, the development of novel and sensitive spectroscopic methods is of major interest. Here, we present a Doppler-free selective reflection experiment on the 6S1/2 --> 5D5/2 electric-quadrupole transition of cesium vapor at the vicinity of a sapphire window. This is achieved by a precision experiment overcoming limitations due to the small signal amplitude of forbidden transitions. Narrow sub-Doppler lines allow for a collisional broadening measurement on the electric-quadrupole line. The interaction of cesium atoms with the sapphire surface of the cell is evidenced, but, due to its weak contribution, a quantitative analysis remains challenging. Nevertheless, our experiment paves the way for further studies of the Casimir-Polder interaction between exotic excited-state atoms and dielectric surfaces.
title Doppler-free selective reflection spectroscopy of electric-quadrupole transitions
topic Atomic Physics
url https://arxiv.org/abs/2409.12017