College of physics, Optoelectronics and Energy &Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215006, China.
Key Lab of Advanced Optical Manufacturing Technologies of Jiangsu Province &Key Lab of Modern Optical Technologies of Education Ministry of China, Soochow University, Suzhou 215006, China.
Sci Rep. 2017 Jan 4;7:39957. doi: 10.1038/srep39957.
We introduce a class of shape-invariant partially coherent beams with a moving guiding center which we term self-steering partially coherent beams. The guiding center of each such beam evolves along a straight line trajectory which can be engineered to make any angle with the x-axis. We show that the straight line trajectory of the guiding center is the only option in free space due to the linear momentum conservation. We experimentally generate a particular subclass of new beams, self-steering Gaussian Schell beams and argue that they can find applications for mobile target tracing and trapped micro- and/or nanoparticle transport.
我们引入了一类具有移动引导中心的形状不变部分相干光束，我们称之为自导向部分相干光束。每个这样的光束的引导中心沿着直线轨迹演化，该轨迹可以设计成与 x 轴成任何角度。我们表明，由于线性动量守恒，引导中心的直线轨迹是自由空间中的唯一选择。我们实验生成了一类新光束的特定子类，自导向高斯谢尔光束，并认为它们可以应用于移动目标跟踪和捕获微/纳米粒子的传输。
