Pseudomomentum transfer from evanescent waves to atoms measured by saturated absorption spectroscopy
Pseudomomentum transfer from evanescent waves to atoms measured by saturated absorption spectroscopy
复制标题
通过饱和吸收光谱测量从倏逝波到原子的赝动量转移
DOI：
10.1016/s0030-4018(97)00420-3
复制
发表时间：
1998
影响因子：
2.4
通讯作者：
T. Sakurai
中科院分区：
文献类型：
--
作者：
T. Matsudo;Y. Takahara;H. Hori;T. Sakurai
我们进行饱和吸收光谱使用反向传播的倏逝波在不同的入射角。实验结果表明，一个交叉共振分裂成两个共振峰，并且随着抽运和探测倏逝波入射角之差的增大，分离度增大。这表明倏逝波的伪动量，即沿着表面的波矢量乘以λ，大于真空中的动量，实际上作为真实的反冲动量传递给原子。
We perform saturated absorption spectroscopy using counterpropagating evanescent waves at different incident angles. The experimental results show that a crossover resonance splits into two resonant peaks, and the separation increases with an increase in the difference between the incident angles of the pump and the probe evanescent waves. This indicates that the pseudomomentum of the evanescent wave, which is the wave vector along the surface multiplied by ℏ and is larger than the momentum in vacuum, is actually transferred to the atoms as a real recoil momentum.