Chinese Optics Letters, 2018, 16 (3): 031405, Published Online: Jul. 13, 2018
Three-dimensional multiple optical cages formed by focusing double-ring shaped radially and azimuthally polarized beams Download: 635次
Abstract
We propose and simulate a method for generating a three-dimensional (3D) optical cage in the vicinity of focus by focusing a double-ring shaped radially and azimuthally polarized beam. Our study shows that the combination of an inner ring with an azimuthally polarized field and an outer ring with a radially polarized field and a phase factor can produce an optical cage with a dark region enclosed by higher intensity. The shape of the cage can be tailored by appropriately adjusting the parameters of double-mode beams. Furthermore, multiple 3D optical cages can be realized by applying the shift theorem of the Fourier transform and macro-pixel sampling algorithm to a double-ring shaped radially and azimuthally polarized beam.
Tingting Zeng, Jianping Ding. Three-dimensional multiple optical cages formed by focusing double-ring shaped radially and azimuthally polarized beams[J]. Chinese Optics Letters, 2018, 16(3): 031405.