Shojiguchi A, Kitahara K, Kobayashi K, Ohtsu M
ERATO Localized Photon Project, Japan Science and Technology, 687-1 Tsuruma, Machidashi, Tokyo 194-0004, Japan.
J Microsc. 2003 Jun;210(Pt 3):301-6. doi: 10.1046/j.1365-2818.2003.01157.x.
On the basis of the procedure for controlling the spins of atoms using circularly polarized evanescent light proposed by Hori et al.[(1996) Abstracts of the 1st Asia-Pacific Workshop on Near-field Optics] we discuss the influence of boundary conditions on the probability of spontaneous emission and thus on the spin polarization efficiency, which was not considered in the Hori et al. study. Using the Carniglia-Mandel mode expansion of electromagnetic fields, we derive the spontaneous emission and spin polarization probabilities of atoms near a dielectric surface, and show the atom-surface distance dependence and refractive index dependence. Numerical evaluation for the 6P1/2-6S1/2 transition of a Cs atom indicates an increase in the efficiency of spin polarization by 30%.
基于堀井等人[（1996年）第一届亚太近场光学研讨会摘要]提出的使用圆偏振倏逝光控制原子自旋的程序，我们讨论了边界条件对自发发射概率进而对自旋极化效率的影响，这在堀井等人的研究中未被考虑。利用电磁场的卡尼利亚 - 曼德尔模式展开，我们推导了电介质表面附近原子的自发发射和自旋极化概率，并展示了原子与表面距离依赖性和折射率依赖性。对铯原子6P1/2 - 6S1/2跃迁的数值评估表明自旋极化效率提高了30%。
