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Novel Atomic Mirror with a Blue-Detuned Semi-Gaussian Beam |
| ZHENG Ping2;GAO Wei-Jian2;YIN Jian-Ping1,2 |
| 1Key Laboratory for Optical and Magnetic Resonance Spectroscopy, Department of Physics, Department of Physics, Suzhou University, Suzhou 215006
2East China Normal University, Shanghai 200062 |
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| Cite this article: |
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ZHENG Ping, GAO Wei-Jian, YIN Jian-Ping 2003 Chin. Phys. Lett. 20 379-382 |
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Abstract A novel and simple atomic mirror composed of a blue-detuned
semi-Gaussian beam is proposed. From the Fresnel diffraction theory, the intensity distributions of a collimated Gaussian laser beam diffracted by the straight edge of a semi-infinite opaque plate are studied. The optical potential of the semi-Gaussian beam for 85Rb atoms and its spontaneous emission probability are calculated and compared with the performance of the evanescent-wave mirror. Our study shows that the blue-detuned semi-Gaussian beam, as a novel atomic mirror, can be used to reflect atomic beam efficiently, and under the same beam parameters and lower normal atomic velocity, the performance of the semi-Gaussian-beam mirror is better than that of the evanescent-wave mirror.
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| Keywords:
42.50.Vk
32.80.Lg
32.80.Qk
03.75.Be
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Published: 01 March 2003
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