School of Physical Science and Technology, Soochow University, Suzhou 215006, China.
Opt Lett. 2013 Jun 1;38(11):1814-6. doi: 10.1364/OL.38.001814.
We established an experimental setup for generating partially coherent beams with different complex degrees of coherence, and we report experimental generation of an elliptical Gaussian Schell-model (GSM) beam and a Laguerre-GSM beam for the first time. It has been demonstrated experimentally that an elliptical GSM beam and a Laguerre-GSM beam produce an elliptical beam spot and a dark hollow beam spot in the focal plane (or in the far field), respectively, which agrees with theoretical predictions. Our results are useful for beam shaping and particle trapping.
我们建立了一个实验装置，用于产生具有不同复相干度的部分相干光束，并首次报告了椭圆高斯谢尔模型（GSM）光束和拉盖尔-GSM 光束的实验产生。实验证明，椭圆 GSM 光束和拉盖尔-GSM 光束在焦平面（或远场）中分别产生椭圆光束光斑和暗空心光束光斑，这与理论预测相符。我们的结果对于光束整形和粒子捕获是有用的。
