Enhanced Photo-excitation and Angular-Momentum Imprint of Gray Excitons in WSe2Monolayers by Spin–Orbit-Coupled Vector Vortex Beams
Oscar Javier Gomez Sanchez,
Guan-Hao Peng,
Wei-Hua Li
et al.
Abstract:A light beam can be spatially structured in the complex amplitude to possess orbital angular momentum (OAM), which introduces an extra degree of freedom alongside the intrinsic spin angular momentum (SAM) associated with circular polarization. Furthermore, superimposing two such twisted light (TL) beams with distinct SAM and OAM produces a vector vortex beam (VVB) in nonseparable states where not only complex amplitude but also polarization is spatially structured and entangled with each other. In addition to … Show more
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