Abstract
In photonics, the spin-orbit interaction (SOI) of light refers to the coupling between the circular polarization of light and its orbital angular momentum. Most of the studies on SOI are limited to systems with a certain degree of order because of the pre-determined requirements for this system. These systems are thoroughly different from the systems in which non-neglected disorders are present, and this leads to questions about whether the SOI of light could be manipulated in these systems. In our study, from disorder metasurface to scattering layers composed of TiO2 particles, we show the difference between these two disordered mediums in terms of SOI. We also show that the wavefront shaping technique could be used to manipulate the SOI in the disordered medium through a time reversal operation. With the help of the optimization algorithm and measuring the vectorial transmission matrix, we show that it is possible to simultaneously control the output field intensity distribution and the spin distribution in momentum space as we wanted in a disordered system.
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