Two-color cesium magneto-optical trap with 6S1/2-6P3/2-7S1/2 (852 nm + 1470 nm) ladder-type system

Jie Wang; Guang Yang; Jun He; Junmin Wang

doi:10.3788/COL201715.050203

Journals >Chinese Optics Letters >Volume 15 >Issue 5 >Page 050203 > Article

Chinese Optics Letters
Vol. 15, Issue 5, 050203 (2017)

Two-color cesium magneto-optical trap with 6S_1/2-6P_3/2-7S_1/2 (852 nm + 1470 nm) ladder-type system

Jie Wang^1、2, Guang Yang^1、2, Jun He^1、2、3, and Junmin Wang^{1、2、3、*}

Author Affiliations

¹State Key Laboratory of Quantum Optics and Quantum Optics Devices, Shanxi University, Taiyuan 030006, China

²Institute of Opto-Electronics, Shanxi University, Taiyuan 030006, China

³Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China

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DOI: 10.3788/COL201715.050203 Cite this Article Set citation alerts

Jie Wang, Guang Yang, Jun He, Junmin Wang. Two-color cesium magneto-optical trap with 6S_1/2-6P_3/2-7S_1/2 (852 nm + 1470 nm) ladder-type system[J]. Chinese Optics Letters, 2017, 15(5): 050203 Copy Citation Text

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Abstract

1470 nm + 852 nm

two-color (TC) cesium (Cs) magneto-optical trap (MOT) with a

6 S_{1 / 2} - 6 P_{3 / 2} - 7 S_{1 / 2}

ladder-type system is proposed and experimentally investigated. To the best of our knowledge, it is the first report about the

1470 nm + 852 nm

Cs TC-MOT. One of the three pairs of the 852 nm cooling and trapping beams (CTBs) in a conventional Cs MOT is replaced with a pair of the 1470 nm CTBs. Thus, the TC-MOT partially employs the optical radiation forces from photon scattering of the

6 P_{3 / 2}

(

F^{'} = 5

)

7 S_{1 / 2}

(

F^{''} = 4

) excited-state transition (1470 nm). This TC-MOT can cool and trap Cs atoms on both the red- and blue-detuning sides of the two-photon resonance. This work may have applications in cooling and trapping of atoms using inconvenient wavelengths and background-free detection of cold and trapped Cs atoms.

R_{i, j}^{(2)} = \frac{γ {| Ω_{g e} Ω_{e e^{'}} |}^{2}}{16 {| ({\tilde{Δ}}_{1} - k_{g e} \hat{i} \cdot v {) (\tilde{δ}}_{2} - k_{g e} \hat{i} \cdot v - k_{e e^{'}} \hat{j} \cdot v) |}^{2}},

(1)

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R_{i, j}^{(3)} = \frac{{| Ω_{e e^{'}} |}^{2}}{4 {| {\tilde{Δ}}_{1} - k_{g e} \hat{i} \cdot v - 2 k_{e e^{'}} \hat{j} \cdot v |}^{2}} \frac{Γ}{γ} R_{i, j}^{(2)} .

(2)

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Jie Wang, Guang Yang, Jun He, Junmin Wang. Two-color cesium magneto-optical trap with 6S_1/2-6P_3/2-7S_1/2 (852 nm + 1470 nm) ladder-type system[J]. Chinese Optics Letters, 2017, 15(5): 050203

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