Bulletin of the American Physical Society

Observation of the $^{85}$Rb$_{2}$ a $^{3}\Sigma _{u}^{+}$ State by PFOODR Resolved Fluorescence Spectroscopy

Bediha Beser, Jianmei Bai, Ergin H. Ahmed, V. B. Sovkov, V. A. Ivanov, Feng Xie, Li Li, Marjatta Lyyra

Published May 20, 2009• 0 citations

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Bulletin of the American Physical Society

Observation of the $^{85}$ Rb $_{2}$ a $^{3}\Sigma _{u}^{+}$ State by PFOODR Resolved Fluorescence SpectroscopyObservation of the $^{85}$Rb$_{2}$ a $^{3}\Sigma _{u}^{+}$ State by PFOODR Resolved Fluorescence Spectroscopy

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Published May 20, 2009• 0 citations

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State-Selective Detection of Ultracold High- $v$ Ground-State Rb $_2$ , and Spectroscopy of the (2) $\,\,^1\Sigma_u^+$ StateState-Selective Detection of Ultracold High-$v$ Ground-State Rb$_2$, and Spectroscopy of the (2)$\,\,^1\Sigma_u^+$ State

Yiyan Huang, H. Kim, Jing Qi +4 more

Bulletin of the American Physical SocietyMay 20, 20050 citations

Observation of the

^{85}

_{2}

^{3}\Sigma _{u}^{+}

State by PFOODR Resolved Fluorescence Spectroscopy

Spectroscopic investigation of the

A

and 3

^{1}\Sigma ^{+}

states of

^{39}

^{85}

High-Resolution Spectroscopy of Long-Range Molecular States of

^{85}

_2

We report the results of two-photon-excited fluorescence (TPEF) measurements of the

5\mathrm{S}_{1/2} \rightarrow 5\mathrm{D}_{5/2}

transition of

^{85}

Rb and

^{87}

Rb cooled in a magneto-optical trap (MOT). We observe TPEF at excitation powers as low as 1

μ

W or fluxes as low as

2.98_{-0.94}^{+1.37} \times 10^{18}\ \text{photons}\,\text{cm}^{-2}\,\text{s}^{-1}

(

^{85}

Rb) and

3.31_{-1.33}^{+2.21} \times 10^{18}\ \text{photons}\,\text{cm}^{-2}\,\text{s}^{-1}

(

^{87}

Rb). Our results demonstrate that optically cooled Rb is a promising platform for observing sensitive two-photon spectral signatures at low photon fluxes.

{5S}_{1/2}

state are resolved using laser-induced fluorescence spectroscopy under conditions for which all excited

{5P}_{3/2}

state hyperfine components are excited simultaneously. Circularly polarized fluorescence is observed to be emitted in the direction perpendicular to both to the direction of the magnetic field

\mathbf{B}

and direction of the light polarization

\mathbf{E}.

The obtained circularity is shown to be in quantitative agreement with theoretical predictions.

State-Selective Detection of Ultracold High-

v

Ground-State Rb

_2

, and Spectroscopy of the (2)

\,\,^1\Sigma_u^+

State