Black Phosphorus‐Based Absorbing Bionic Stacked Structured Linear Polarization Detector

Abstract Polarization detection technology is developing toward miniaturization and high integration from the early time‐division type, amplitude‐division type, aperture‐division type, etc., to a more integrated focal plane‐integrated array type. Focal plane detectors that rely on metal nanogrids are not able to guarantee both temporal and spatial resolution for lossless polarized light detection with a guaranteed level of integration. Inspired by Agabus japonicus , the black phosphorus (BP)‐based absorbing bionic stacked structured linear polarization detector (BSLD) is proposed. The BSLD exploits the polarization absorption properties of BP to achieve near‐lossless linear polarization detection. The design includes two orthogonally aligned polarization‐ and angle‐sensitive BP photodetectors. The detection performance of the detector is investigated and analyzed under a green laser beam (wavelength 532 nm). The BSLD designed in this paper can simultaneously measure the multi‐angle component information of the incident light at one point in space in order to resolve the polarization state of the incident light, providing a potential solution for an integrated, real‐time, and high‐resolution loss‐free polarization image sensor.