Polarized Shack-Hartmann wavefront sensor

Shack-Hartmann wavefront sensor (SHWFS) has been widely used in adaptive optics (AO) systems to detect phase distortion characteristics. In laser communication, target detection, vision and other application fields, the performance of SHWFS is affected by bright skylight scattered light, which restricted working ability AO system severely. Therefore, this paper proposes a new polarized (p-SHWFS) based on principle polarization imaging, utilize difference state (SoP) between signal stray light improve image contrast. The p-SHWFS can be composed simply micro-lens array linear camera. camera uses four directional polarizing filters at 0°, 135°, 45° 90° every pixels. Thus, degree (DoLP) angle (AoLP) for incident analyzed, signal-to-background ratio (SBR) improved some certain depending SoP. paper, we introduce basic validate feasibility accuracy improvement numerical simulation practical experiments. experimental results show that obviously measurement under strong when SoP exists. That may give us initial reference reduce influence fields.