Singh Brijesh Kumar, Remez Roei, Tsur Yuval, Arie Ady
Opt Lett. 2015 Nov 15;40(22):5411-4. doi: 10.1364/OL.40.005411.
Special beams, including the Airy beam and the vortex-embedded Airy beam, draw much attention due to their unique features and promising applications. Therefore, it is necessary to devise a straightforward method for measuring these peculiar features of the beams with ease. Hence we present the astigmatic transformation of Airy and Airy-vortex beam. The "acceleration" coefficient of the Airy beam is directly determined from a single image by fitting the astigmatically transformed beam to an analytic expression. In addition, the orbital angular momentum of optical vortex in Airy-vortex beam is measured directly using a single image.
包括艾里光束和嵌入涡旋的艾里光束在内的特殊光束，因其独特特性和广阔应用前景而备受关注。因此，有必要设计一种简单的方法来轻松测量这些光束的特殊特性。为此，我们提出了艾里光束和艾里 - 涡旋光束的像散变换。通过将像散变换后的光束拟合到一个解析表达式，直接从单幅图像中确定艾里光束的“加速”系数。此外，利用单幅图像直接测量了艾里 - 涡旋光束中光学涡旋的轨道角动量。
