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Fourier-space generation of abruptly autofocusing beams and optical bottle beams

机译:自动聚焦光束和光学瓶光束的傅立叶空间生成

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摘要

We demonstrate analytically and experimentally that a circular abruptly autofocusing (AAF) Airy beam can be generated by Fourier-transforming an appropriately apodized Bessel beam whose radial oscillations are chirped by a cubic phase term. Depending on the relation between the chirp rate and the focal distance of the Fourier-transforming lens, it is possible to generate AAF beams with one or two foci, the latter case leading to the formation of an elegant paraboloid optical bottle.
机译:我们通过分析和实验证明,通过傅立叶变换适当变迹的贝塞尔光束(其径向振荡由立方相位项chi变)可以生成圆形突然自动聚焦(AAF)艾里光束。取决于the率和傅立叶变换透镜的焦距之间的关系,可以生成具有一个或两个焦点的AAF光束,后一种情况导致形成优雅的抛物面光学瓶。

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