Abstract:Objective In recent years, photon orbital angular momentum, as a new degree of freedom, has attracted wide attention.The Laguerre -Gaussian (LG) beam is a commonly used orbitalangularmomentum (OAM) beam and is widely studied.Among a large amount of research, the mode conversion of LG beam attracts much attention from researchers. It is found that an LG beam can be converted into a Hermite -Gaussian (HG) beam with the help of cylindrical lenses. In addition, the nonlinear beam shaping technique can change the c… Show more
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