论文标题
相关诱导的轨道角动量变化
Correlation-induced orbital angular momentum changes
论文作者
论文摘要
我们证明，近似光束的轨道角动量通量密度可以在自由空间中的传播中变化。这些变化完全是由于源的空间相干状态，并且效果类似于相关诱导的梁的强度，光谱和极化的变化。用数值示例证明了源相干态来控制OAM通量密度的宽度，形状和横向移位。
We demonstrate that the orbital angular momentum flux density of a paraxial light beam can change on propagation in free space. These changes are entirely due to the spatial coherence state of the source, and the effect is analogous to correlation-induced changes in the intensity, spectrum and polarization of a beam. The use of the source coherence state to control the width, shape, and transverse shifts of the OAM flux density is demonstrated with numerical examples.
