论文标题
oaM携带oaM的频谱指数超快局部脉冲
Spectral Index of OAM-Carrying Ultrafast Localized Pulses
论文作者
论文摘要
我们研究了oaM携带局部波的自由度及其对其横向强度分布的影响。特别是，我们将注意力集中在两个不同的光谱族上，即呈指数衰减的光谱，它们与基本的X波和贝塞尔调制的光谱密切相关。对于每个类别，我们通过合适的操纵它们的频谱来构建其横向强度分布，从而形成与Laguerre-Gaussian梁相似的径向结构，从而显示出可能如何通过构建其横向强度分布。为了完成我们的分析，我们研究了两个光谱函数对此类局部波的线性和角动量的影响。
We investigate the spectral degree of freedom of OAM-carrying localized waves, and its influence on their transverse intensity distribution. In particular, we focus our attention on two different families of spectra, namely exponentially decaying spectra, which are very tightly connected to fundamental X-waves, and Bessel-modulated spectra. For each class we show how it is possible, by suitable manipulating their spectrum, to structure their transverse intensity distribution, thus creating a radial structure similar to that of Laguerre-Gaussian beams. To complete our analysis, we investigate the impact of the two spectral functions on linear and angular momentum of such localized waves.
