Arbitrarily spin-orientated and super-resolved focal spot
Published on 2018-08-02T15:50:32Z (GMT) by
In this letter, we propose an accessible approach for achieving a robust focal spot capable of both super resolution and arbitrary spin orientation. Toward this aim, we meticulously devise a structured incident light consisting of three sorts of beams and detailedly elucidate to produce it by the superposition of a radially polarized beam and an azimuthally polarized beam. Via tightly focusing counter-propagating patterned illuminating beams in a 4π optical microscopic configuration, three polarized components perpendicular to each other are created, enabling to yield a super-resolved focal spot possessing spatial spin axis. By wilfully adjusting the amplitude factors of the containing beams, the spin direction can be freely tunable. Such well-defined electric field behavior is largely ascribed to perfect interference caused by all the polarized components. The demonstrated results may greatly expand the practical applications related to the spin photonics.
Cite this collection
Yan, Weichao; nie, zhongquan; liu, Xiaofei; Zhang, Xueru; Wang, Yuxiao; Song, Yinglin (2018): Arbitrarily spin-orientated and super-resolved focal spot. The Optical Society. Collection.