作者
Vinicius S de Angelis, Leonardo A Ambrosio
发表日期
2019/6/17
研讨会论文
2019 PhotonIcs & Electromagnetics Research Symposium-Spring (PIERS-Spring)
页码范围
309-312
出版商
IEEE
简介
This work deals with a nondiffracting beam capable of providing arbitrary intensity patterns along a line inclined with respect to the normal plane of the aperture or generator (optical axis). These beams are built up from discrete superpositions of zeroth-order Bessel beams, all with the same frequency. The host medium is assumed lossless and isotropic. By assigning specific amplitude and phase values to each Bessel beam, it is possible to choose beforehand a particular intensity profile such as a millimeter long step function located a few centimeters away from the aperture and inclined by a few degrees (typically below 5°) from the optical axis. Moreover, it is observed that the resulting beam possesses a high transverse localization. In view of that, these localized beams could be applied in optical alignment, optical trapping, free space optics and manipulation of dielectric micro-sized particles in optical tweezers …
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