In this Letter,we propose that the photopatterned liquid crystal (LC) can act as a broadband and efficient terahertz (THz) Bessel vortex beam (BVB) generator.Th
We experimentally demonstrate for the first time an active all-optical ultrafast modulation of electromagnetically induced transparency-like effect in a hybrid
A novel four light ray path test method for measuring residual reflectance has been presented.Residual reflectance spatial distribution at a cladding interface