Broadband full-stokes polarimeter based on ReS2 nanobelts

Abstract Full-Stokes polarimeters can detect the polarization states of light, which is critical for the next-generation optical and optoelectronic systems. Traditional full-Stokes polarimeters are either based on bulky optical systems or complex metasurface structures, which cause the system complexity with unessential energy loss. Recently, filterless on-chip full-Stokes polarimeters have been demonstrated by using optical anisotropic materials which are able to detect the circularly polarized light. Nevertheless, those on-chip full-Stokes polarimeters have either the limited detection wavelength range or relatively poor device performance that need to be further improved. Here, we report the high performance broadband full-Stokes polarimeters based on rhenium disulfide (ReS 2 ). While the anisotropic structure of the ReS 2 introduces the in-plane optical anisotropy for linearly polarized light (LP) detection, Schottky contacts formed by the ReS 2 −Au could break the symmetry, which can detect circularly polarized (CP) light. By building a proper model, all four Stokes parameters can be extracted by using the ReS 2 nanobelt device. The device delivers a photoresponsivity of 181 A/W, a detectivity of 6.8 × 10 10 Jones and can sense the four Stokes parameters of incident light within a wide range of wavelength from 565−800 nm with reasonable average errors. We believe our study provides an alternative strategy to develop high performance broadband on-chip full-Stokes polarimeters.