Atom trapping and guiding with a subwavelength-diameter optical fiber
Atom trapping and guiding with a subwavelength-diameter optical fiber
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DOI：
10.1103/physreva.70.011401
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发表时间：
2004-07-01
影响因子：
2.9
通讯作者：
Morinaga, M
中科院分区：
文献类型：
--
作者：
Balykin, VI;Hakuta, K;Morinaga, M
我们建议使用细纤维周围的逝去波来捕获原子。结果表明，当光纤直径约为光波波长的两倍，且沿光纤轴线的原子角动量分量在适当范围内时，石英光纤基模中红失谐逝去波场的梯度力可以平衡离心力。例如，使用半径为0.2um的石英光纤和功率约为27 mW的1.3微米波长的光，可以在低于0.29MK的温度下实现铯原子的系统。
We suggest using an evanescent wave around a thin fiber to trap atoms. We show that the gradient force of a red-detuned evanescent-wave field in the fundamental mode of a silica fiber can balance the centrifugal force when the fiber diameter is about two times smaller than the wavelength of the light and the component of the angular momentum of the atoms along the fiber axis is in an appropriate range. As an example, the system should be realizable for cesium atoms at a temperature of less than 0.29 mK using a silica fiber with a radius of 0.2 mum and a 1.3-mum-wavelength light with a power of about 27 mW.