The coherent superposition of two vortex beams with opposite topological charges gives rise to the formation of petal‐like beams with unique intensity profiles and azimuthal phase structures, offering great potential for various applications. Here, the generation of anisotropic second‐harmonic petal‐like beams is demonstrated using ultrathin niobium oxide dibromide (NbOBr 2 ) holograms. The polarization‐dependent Raman measurements are conducted on the NbOBr 2 flake to reveal the anisotropic properties of the crystal. By imprinting the beam profile information of the superposed vortex beams on the designed NbOBr 2 holograms, highly anisotropic second‐harmonic petal‐like beams with different combinations of the topological charges of vortex beams are produced. The results demonstrated here provide a pathway toward the development of chip‐scale polarization‐sensitive functional optical devices for applications in optical communication, optical trapping, and quantum optics.
Deka et al. (Mon,) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: