Orientation-selective elliptic optical vortex array

Abstract

We propose an orientation-selective elliptic optical vortex array (OS-EOVA). Using multicoordinate (namely, polar, Cartesian, and elliptic) transformations, three kinds of operations applied on optical vortex elements (including location, rotation, and stretching) were executed to obtain the desired orientation in the observed plane. Then, exploiting the reverse design technique, the above-mentioned operations were mapped onto the initial execution plane via Fourier transform. Based on this, 1D and 2D OS-EOVAs were generated experimentally and the existence of optical vortices was verified. Specific OS-EOVAs were designed, possessing antenna array orientation as well as radial and azimuthal orientation. Compared to existing OVAs, the OS-EOVA provides an additional modulated dimension, i.e., orientation. This technique will open up some potential applications, such as complex manipulation of multiparticle systems and fabrication of micromaterials with orientation.

Propagation properties of radially polarized Gaussian Schell-model array beams

“…Applying Equations( 20) -( 22), one may ready to study the statistical properties of such a RPGSMA beam on propagation. Setting ρ1 = ρ2 = ρ, The average intensity for a RPGSMA beam propagating in free space can be expressed as [19,20,37] , (24) and the DOP of the beam can be calculated by the expression…”

“…In recent years, an increased attention has been paid to array beams with spatially period due to its wide application in multiple fields including holographic optical tweezers [1], particles trapping [2], phonic lithography [3,4]et al Compared with a single beam, coherent array beams having source size diverges less can produce higher output power and lattice-like intensity distribution [5]. To obtain array beams, A number of theoretical methods and experimental techniques have been used to predict and generate all types of Array beams including laser array beam [6], Gaussian Schell-model array beam [7][8][9][10], partially coherent flat-topped laser array [11,12], various partially coherent partially phase-locked laser array [13][14][15][16], partially coherent Hermite-Gaussian linear array beam [17], partially coherent vortex beam array [18,19] et. al.…”

Generation and Talbot Effect of Optical Vortex Lattices with High Orbital Angular Momenta

“…[15][16][17] Unlike classical vortex beams, spatially distributed OV lattices (OVLs) with multiple phase singularities have recently garnered attention because of their parallel processing capacity. [18][19][20][21][22][23][24][25][26][27][28][29][30][31][32] Numerous methods have been developed for generating an DOI: 10.1002/qute.202300203 OVL using diffractive optical devices such as Dammann gratings [33] and spatial light modulators (SLMs). [34,35] An alternate method for generating OVLs is using vortex light interference with Laguerre-Gaussian beams, [36] Bessel beams, [37] and perfect OV.…”

Properties of the Rotation and Mergence of Twisted Gaussian Schell Model Array Beams Propagating in Turbulent Biological Tissues

“…On the other hand, due to the wide applications in multiple fields such as holographic optical tweezers [17], particles trapping [18], photonic lithography [19][20][21], and various array beams have always been a subject of great concern. Compared with the single beam, the coherent array beams have source size which diverges less and can produce higher output power and lattice-like intensity distribution [22]; researchers have made lots of efforts [23][24][25][26][27][28]. Wan and Zhao [29] presented a new kind of array beams with twist phase termed as twisted Gaussian Schell model array (TGSMA) sources whose spectral density and spectral degree of coherence can gradually rotate along its propagation directions; properties of electromagnetic twisted Gaussian Schell model array beams in free space have been investigated [22]and the effect of anisotropic oceanic turbulence on propagation properties of the TGSMA beams has been reported [30,31].…”