Observation of fast light in Mie scattering processes.
Observation of fast light in Mie scattering processes.
复制标题
DOI：
10.1103/physreve.73.045602
复制
发表时间：
2006-04
期刊：
影响因子：
--
通讯作者：
K. Totsuka;M. Tomita
中科院分区：
文献类型：
--
作者：
K. Totsuka;M. Tomita
我们观察到-4.9nsec的负群延迟的光波包传播通过一个光纤锥耦合到一个单一的米氏球。在Mie散射过程中观察到的快光与在欠耦合条件下根据定向耦合理论计算的异常色散非常一致，这也预测了在过耦合条件下的正群延迟。
We observed -4.9 nsec negative group delay in the optical wave-packet propagation through a fiber taper coupled with a single Mie sphere. The observed fast light under the Mie scattering process agrees excellently with the anomalous dispersion calculated on the basis of a directional coupling theory on the undercoupling condition, which also predicts a positive group delay on the overcoupling condition.