Vinu R V, Sharma Manoj Kumar, Singh Rakesh Kumar, Senthilkumaran P
Opt Lett. 2014 Apr 15;39(8):2407-10. doi: 10.1364/OL.39.002407.
A new technique to generate a spatially varying coherence field, such as a coherence comb using a Dammann grating, is proposed and experimentally demonstrated. The principle of the technique lies with the vectorial van Cittert-Zernike theorem, which connects vectorial source structure with the coherence-polarization of the light. The Dammann grating is encoded into one of the polarization components of the light to shape the vectorial source structure and, consequently, the coherence-polarization of the light. Experimental results on the generation of a spatial coherence comb by the Dammann grating are presented for different orders.
提出并通过实验证明了一种生成空间变化相干场的新技术，例如使用达曼光栅生成相干梳。该技术的原理基于矢量范西特 - 泽尔尼克定理，该定理将矢量源结构与光的相干偏振联系起来。将达曼光栅编码到光的一个偏振分量中，以塑造矢量源结构，进而塑造光的相干偏振。给出了不同阶数下利用达曼光栅生成空间相干梳的实验结果。
