Single radial shear interference wavefront sensing based on large aperture Greek ladder membrane photon sieves

Large aperture optical components can be widely used in various large-scale optical systems, and existing commercial wavefront sensors are difficult to meet the real-time online dynamic measurement of large aperture optical components. To address this issue, a single radial shear interference wavefront sensing technology based on the ultra large diameter ancient Greek ladder film photon screen is proposed. The ultra large diameter ancient Greek ladder membrane photon sieve has an axial beam splitting function that simultaneously generates a reduced wavefront and an enlarged wavefront. It can achieve radial shear interference with adjustable shear ratio on a single chip, and the hollow membrane structure is easy to process with large diameters and can overcome background aberrations. Unlike traditional confocal radial shear interference, non confocal radial shear interference is carried by spherical waves and amplifies the interference of wavelet aberrations. The feasibility of the above scheme has been verified through experiments, providing new options for meter level optical components of large laser devices and single wavefront sensing of ten meter level space telescopes.