Zeeman slowing atoms using the magnetic field from a magneto-optical trap

Wen Yan; Yuan Yao; Yuxin Sun; Hoyt W. Chad; Yanyi Jiang; Longsheng Ma

doi:doi:10.3788/COL201917.040201

Chinese Optics Letters, 2019, 17 (4): 040201, Published Online: Apr. 3, 2019

Zeeman slowing atoms using the magnetic field from a magneto-optical trap Download： 790次

Wen Yan ¹Yuan Yao ^1,*Yuxin Sun ¹Hoyt W. Chad ²Yanyi Jiang ¹Longsheng Ma ¹

Author Affiliations

¹ State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062, China

² Physics & Engineering, Bethel University, St. Paul, Minnesota 55112, USA

Figures & Tables

Fig. 1. Schematic of the Zeeman slower, whose magnetic field is generated by a pair of coils with 32 turns for the MOT. At the bottom, it shows the magnetic field produced by the anti-Helmholtz coil. The inset shows the geometry of the output holes.

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Fig. 2. Velocity distribution of the thermal atomic beam without deceleration (red dashed line) and with deceleration (blue solid line). The green dashed and dotted line shows the capture velocity of the MOT.

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Fig. 3. Simulation result. (a) The percentage of trapped atoms increases with the saturation parameter $s$ when the frequency detuning $Δ / (2 π)$ of the slowing beam is $- 110 MHz$ (red dots), $- 120 MHz$ (blue filled triangles), and $- 130 MHz$ (black filled squares), respectively. (b) The percentage of trapped atoms depends on the frequency detuning $Δ / (2 π)$ of the slowing beam at different saturation parameters.

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Fig. 4. Experimental result. (a) The number of trapped atoms increases with the saturation parameter $s$ when the frequency detuning $Δ / (2 π)$ of the slowing beam is $- 110 MHz$ (blue dots), $- 120 MHz$ (magenta open squares), and $- 130 MHz$ (red open triangles), respectively. The oven temperature is $T = 653 K$ . The measurement error is about 1% based on ten measurements. (b) The number of trapped atoms depends on the frequency detuning $Δ / (2 π)$ of the slowing beam when the saturation parameter is 0.17.

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Wen Yan, Yuan Yao, Yuxin Sun, Hoyt W. Chad, Yanyi Jiang, Longsheng Ma. Zeeman slowing atoms using the magnetic field from a magneto-optical trap[J]. Chinese Optics Letters, 2019, 17(4): 040201.

Zeeman slowing atoms using the magnetic field from a magneto-optical trap Download： 790次

Fig. 1. Schematic of the Zeeman slower, whose magnetic field is generated by a pair of coils with 32 turns for the MOT. At the bottom, it shows the magnetic field produced by the anti-Helmholtz coil. The inset shows the geometry of the output holes.

Fig. 2. Velocity distribution of the thermal atomic beam without deceleration (red dashed line) and with deceleration (blue solid line). The green dashed and dotted line shows the capture velocity of the MOT.

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Zeeman slowing atoms using the magnetic field from a magneto-optical trap Download： 790次

Fig. 1. Schematic of the Zeeman slower, whose magnetic field is generated by a pair of coils with 32 turns for the MOT. At the bottom, it shows the magnetic field produced by the anti-Helmholtz coil. The inset shows the geometry of the output holes.

Fig. 2. Velocity distribution of the thermal atomic beam without deceleration (red dashed line) and with deceleration (blue solid line). The green dashed and dotted line shows the capture velocity of the MOT.

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