Generation of non-paraxial accelerating beams by active aberration compensation

We demonstrate the generation of non-paraxial accelerating beams by using an objective with an external spherical aberration compensation. A correction phase is applied at an illuminating plane before the objective, and such an aberration-corrected system enables a Fourier transform that translates...

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Bibliographic Details
Published inOptics communications Vol. 437; pp. 11 - 16
Main Authors Qiu, Yujie, Mu, Xue, Zhang, Chunmei, Sun, Xiaopei, Hu, Yi, Chen, Zhigang, Xu, Jingjun
Format Journal Article
LanguageEnglish
Published Elsevier B.V 15.04.2019
Subjects
Aberration compensation
Invariant optical fields
Wave propagation
Aberration compensation
Wave propagation
Invariant optical fields
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Summary:We demonstrate the generation of non-paraxial accelerating beams by using an objective with an external spherical aberration compensation. A correction phase is applied at an illuminating plane before the objective, and such an aberration-corrected system enables a Fourier transform that translates a proper spatial spectral phase pattern into the desired non-paraxial accelerating beams. The feasibility of the scheme and the quality of the generated beams are further discussed for various conditions. Experimentally, we observe the accelerating beams as well as non-paraxial autofocusing beams following predesigned trajectories generated with such an aberration compensation method, providing an effective and alternative approach for non-paraxial beam shaping.
ISSN:0030-4018
1873-0310
DOI:10.1016/j.optcom.2018.12.040