三主锤部分相干加速光束的产生及其光学特性研究

Generation of Partially Coherent Optical Accelerating Regular Triple-Lobe Beams and Their Optical Properties

利用部分相干光源,通过空间光调制器加载相位图,产生了具有3个加速主锤的部分相干加速光束。数值模拟和实验结果表明,相位掩膜板控制参数β和傅里叶变换透镜焦距f是影响主锤加速度的主要因素,并给出了二者对加速度影响的定量关系。研究结果为今后不同的科学研究需要整形出具有不同加速轨迹的三角主锤加速光束提供了依据。

Based on a partially coherent light source,partially coherent accelerating regular triple-lobe beams are generated by imposing phase grey-scale maps on the spatial light modulator.The numerical simulation and experimental results show that there are two key factors to decide the acceleration of the main lobes of partially coherent optical accelerating regular triple-lobe beams,which are respectively the controlling parameterβof designed phase maps and the focal length f of Fourier transform lens.The relationship betweenβ,f and the main lobes′acceleration of partially coherent accelerating regular triple-lobe beams is also given.The results provide the mechanism of controlling ballistic trajectory of main lobes of partially coherent accelerating regular triple-cusp beams according to different research needs in the future.