Figure 1
From: Controllable beam reshaping by mixing square-shaped and hexagonal optical vortex lattices

Experimental setup. Nd: YVO4, frequency-doubled continuous-wave Neodymium-doped yttrium orthovanadate laser emitting at a wavelength λ = 532 nm; BE, beam expander; M, flat silver mirrors; BS, beam splitters; SLM, reflective spatial light modulators (model Pluto, Holoeye Photonics); L, focusing lens (f = 100 cm); CCD, charge-coupled device camera.