高阶庞加莱模式的内禀角动量、自旋与螺旋度
Intrinsic angular momentum, spin and helicity of higher-order Poincare modes
AI总结：
本文通过纳入通常被忽略的轴向场分量，首次确定了高阶庞加莱拉盖尔-高斯模式的内禀角动量、自旋、螺旋度与手性，并预测其展现出显著增强的超手性特性。
摘要：
高阶庞加莱光学光束的相干光源的出现，为诸如原子和小粒子的光学俘获、手性敏感系统的操控以及宽带通信中改进的编码方案等应用开辟了新的机遇。在此，我们确定了庞加莱拉盖尔-高斯（LG）模式的内禀性质，这些性质迄今既未被评估，其重要性也未被强调。我们采用的理论框架既新颖又必不可少，因为它强调了这些模式的扭曲光场中通常被忽略的轴向分量所起的关键作用。我们表明，纳入轴向场分量使得庞加莱模式的内禀性质——特别是其角动量（包括自旋和轨道）以及螺旋度和手性——得以确定。我们预测，与零阶LG模式所导致的性质相比，这些模式的内禀性质有显著增强。特别地，我们表明高阶LG庞加莱模式展现出超手性，并且值得注意的是，即使在一阶的情况下也是如此。
英文摘要：
The availability of coherent sources of higher order Poincare optical beams have opened up new opportunities for applications such as in the optical trapping of atoms and small particles, the manipulation of chirally-sensitive systems and in improved encoding schemes for broad-bandwidth communications. Here we determine the intrinsic properties of Poincare Laguerre-Gaussian (LG) modes which have so far neither been evaluated, nor their significance highlighted. The theoretical framework we adopt here is both novel and essential because it emphasises the crucial role played by the normally ignored axial components of the twisted light fields of these modes. We show that the inclusion of the axial field components enables the intrinsic properties of the Poincare modes, notably their angular momentum, both spin and orbital as well as their helicity and chirality, to be determined. We predict significant enhancements of the intrinsic properties of these modes when compared with those due to the zero order LG modes. In particular, we show that higher order LG Poincare modes exhibit super-chirality and, significantly so, even in the case of the first order
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