Voltage controlled light states in a spatially pseudo-random bit sequence encoded optical lattice

Abstract

We have demonstrated reconfigurable light states in an optical lattice utilizing the electro-optic Pockels effect in a LiNbO3 slab through altering the transverse refractive index profile of the lattice by pseudo-random bit sequence (PRBS). By modifying the PRBS equivalent voltage range, different light states (ballistic, superdiffusive, diffusive, subdiffusive, and localized) are achieved within the completely disordered lattice. Furthermore, altering the maximum length size and number of periods of the PRBS creates lattices with different pseudo-random refractive index patterns. This provides a broader range of voltage control for switching from superdiffusive state to diffusive state than completely disorder lattice, allowing for precise voltage control over spatial profile for specific applications. This reconfigurable light states in this PRBS controlled lattice hold significant promise for various uses within a single integrated platform even after fabrication.