The design principle of this defocusing fiber lens used as laser beam transforming device and application in an expanded beam coupling system are discussed.
探讨这种发散纤维透镜用作激光束变换元件的设计原理以及在望远镜式扩束型光学耦合系统中的应用。
2
To contract the circular beam symmetrically, the co-propagation of the bright and dark beams in three-dimensional self-defocusing media is studied systematically.
为了获得一种对称压缩圆光束的方法，系统研究了三维自散焦介质中亮暗光束对的共同传输。
3
The conditions of focusing, defocusing and trapping of light beam are given.