Spatial confinement of laser light in active random media
Spatial confinement of laser light in active random media
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DOI：
10.1103/physrevlett.84.5584
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发表时间：
2000-06-12
影响因子：
8.6
通讯作者：
Chang, RPH
中科院分区：
文献类型：
--
作者：
Cao, H;Xu, JY;Chang, RPH
我们观察到激光在微米级随机介质中的空间限制。光限制是由无序诱导的散射和干涉引起的。我们的实验数据表明，散射光的相干放大增强了干涉效应，有助于空间限制。利用时域有限差分方法，模拟了有源随机介质中相干反馈激光的产生。
We have observed spatial confinement of laser light in micrometer-sized random media. The optical confinement is attributed to the disorder-induced scattering and interference. Our experimental data suggest that coherent amplification of the scattered light enhances the interference effect and helps the spatial confinement. Using the finite-difference time-domain method, we simulate lasing with coherent feedback in the active random medium.