Polarization spectroscopy of an excited state transition in Rubidium

Nourah F. Almuhawish; Shuying Chen; Lucy A. Downes; Matthew J. Jamieson; Andrew R. Mackellar; Kevin J. Weatherill

doi:10.1364/OSAC.439037

Polarization spectroscopy of an excited state transition in Rubidium

Nourah F. Almuhawish^*
, Shuying Chen
, Lucy A. Downes
, Matthew J. Jamieson
, Andrew R. Mackellar
, Kevin J. Weatherill

^*Corresponding author for this work

Physics

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

We investigate polarization spectroscopy of an excited state transition in room-temperature rubidium vapor. By applying a circularly polarized coupling beam, resonant with the 5²S₁/₂ → 5²P₃/₂ transition, we induce anisotropy in the atomic medium that is then probed by scanning a probe beam across the 5²P₃/₂ → 6²S₁/₂ transition. By performing polarimetry on the probe beam, a dispersive spectral feature is observed. We characterize the excited-state polarization spectrum as a function of coupling intensity for both isotopes and find that at high intensities, Autler-Townes splitting results in a sub-feature, which theoretical modelling shows is enhanced by Doppler averaging. This spectroscopic technique produces a narrow dispersive signal which is ideal for laser frequency stabilization to excited-state transitions.

Original language	English
Pages (from-to)	2598-2605
Number of pages	8
Journal	OSA Continuum
Volume	4
Issue number	10
Early online date	1 Oct 2021
DOIs	https://doi.org/10.1364/OSAC.439037
Publication status	Published - 15 Oct 2021

Funding

Deanship of Scientific Research, King Faisal University (216094); Engineering and Physical Sciences Research Council (EP/R002061/1, EP/S015973/1).

Keywords

polarization spectroscopy
rubidium vapor

Access to Document

10.1364/OSAC.439037Licence: CC BY 4.0

Cite this

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title = "Polarization spectroscopy of an excited state transition in Rubidium",

abstract = "We investigate polarization spectroscopy of an excited state transition in room-temperature rubidium vapor. By applying a circularly polarized coupling beam, resonant with the 52S1/2 → 52P3/2 transition, we induce anisotropy in the atomic medium that is then probed by scanning a probe beam across the 52P3/2 → 62S1/2 transition. By performing polarimetry on the probe beam, a dispersive spectral feature is observed. We characterize the excited-state polarization spectrum as a function of coupling intensity for both isotopes and find that at high intensities, Autler-Townes splitting results in a sub-feature, which theoretical modelling shows is enhanced by Doppler averaging. This spectroscopic technique produces a narrow dispersive signal which is ideal for laser frequency stabilization to excited-state transitions.",

keywords = "polarization spectroscopy, rubidium vapor",

author = "Almuhawish, \{Nourah F.\} and Shuying Chen and Downes, \{Lucy A.\} and Jamieson, \{Matthew J.\} and Mackellar, \{Andrew R.\} and Weatherill, \{Kevin J.\}",

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month = oct,

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doi = "10.1364/OSAC.439037",

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TY - JOUR

T1 - Polarization spectroscopy of an excited state transition in Rubidium

AU - Almuhawish, Nourah F.

AU - Chen, Shuying

AU - Downes, Lucy A.

AU - Jamieson, Matthew J.

AU - Mackellar, Andrew R.

AU - Weatherill, Kevin J.

PY - 2021/10/15

Y1 - 2021/10/15

N2 - We investigate polarization spectroscopy of an excited state transition in room-temperature rubidium vapor. By applying a circularly polarized coupling beam, resonant with the 52S1/2 → 52P3/2 transition, we induce anisotropy in the atomic medium that is then probed by scanning a probe beam across the 52P3/2 → 62S1/2 transition. By performing polarimetry on the probe beam, a dispersive spectral feature is observed. We characterize the excited-state polarization spectrum as a function of coupling intensity for both isotopes and find that at high intensities, Autler-Townes splitting results in a sub-feature, which theoretical modelling shows is enhanced by Doppler averaging. This spectroscopic technique produces a narrow dispersive signal which is ideal for laser frequency stabilization to excited-state transitions.

AB - We investigate polarization spectroscopy of an excited state transition in room-temperature rubidium vapor. By applying a circularly polarized coupling beam, resonant with the 52S1/2 → 52P3/2 transition, we induce anisotropy in the atomic medium that is then probed by scanning a probe beam across the 52P3/2 → 62S1/2 transition. By performing polarimetry on the probe beam, a dispersive spectral feature is observed. We characterize the excited-state polarization spectrum as a function of coupling intensity for both isotopes and find that at high intensities, Autler-Townes splitting results in a sub-feature, which theoretical modelling shows is enhanced by Doppler averaging. This spectroscopic technique produces a narrow dispersive signal which is ideal for laser frequency stabilization to excited-state transitions.

KW - polarization spectroscopy

KW - rubidium vapor

UR - https://www.scopus.com/pages/publications/85117694643

UR - https://researchdata.durham.ac.uk/files/r23t945q78t

U2 - 10.1364/OSAC.439037

DO - 10.1364/OSAC.439037

M3 - Article

AN - SCOPUS:85117694643

SN - 2578-7519

VL - 4

SP - 2598

EP - 2605

JO - OSA Continuum

JF - OSA Continuum

IS - 10

ER -

Polarization spectroscopy of an excited state transition in Rubidium

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