摘要
A spatially variable retardation device, an SQWP, is designed to generate polarization vortex beams. The transformation of Laguerre--Gaussian beams by the SQWP is further studied, and it is found that the SQWPs can also be used to generate helical beams and measure the topological charges of helical beams.
A spatially variable retardation device, an SQWP, is designed to generate polarization vortex beams. The transformation of Laguerre--Gaussian beams by the SQWP is further studied, and it is found that the SQWPs can also be used to generate helical beams and measure the topological charges of helical beams.
基金
supported by the Program for Chang Jiang Scholars and Innovative Research Team in University,PCSIRT(IRT1212)
the National Natural Science Foundation of China(Nos.61475021 and 61108047)
