Excitation of magnetic quadrupole via structured lights

Capturing Vector Light Field on Azo Molecular Glass Submicron Pillar Array for Polarization Recording and Creating Optical Functional Surfaces

“…[2,5] Many devices and methods have been developed to produce vector beams, which include the laser intra-cavity modulation, [14] spatial light modulator (SLM), [6,15] digital micromirror device (DMD), [16] subwavelength grating and holographic grating, [17,18] specially designed liquid crystal cell (q-plate), [7,19,20] metasurface (J-plate), [21] among others. [2,5] With the discoveries of many amazing functions of vector beams, their applications have been explored in a wide range from optical spin-to-orbital angular momentum conversion, [7,[19][20][21] exiting new resonance in nanoscale particle, [9] constructing optical topology, [10,11] high numerical aperture focusing, [22][23][24] laser surface structuring, [25][26][27] optical trapping, [12,28] optical communication, [29,30] constructing non-separable states of light, [31] to optical sensing and measuring. [32][33][34] The term "cylindrical vector beam" was coined to describe a beam with the cylindrical symmetry of spatialvariant SOPs.…”

“…[2] In recent years, vector light fields with spatialvariant SOPs, especially vector beams, have aroused tremendous DOI: 10.1002/admt.202301173 research enthusiasm for various emerging applications. [4][5][6][7][8][9][10][11][12] Distinct from conventional scalar laser beams with homogeneous SOPs, the polarizations of vector beams show a spatial variation within the cross-section. [2,5,6] Theoretically, scalar beams are the beam solutions of the scalar Helmholtz equation in the paraxial limit, while vector beams correspond to the solutions of Maxwell's vector wave equation.…”