Theoretical simulation and experimental validation of mode-biased wavefront sensor

Operation principle of holographic modal wavefront sensor was obtained indirectly by investigating the output response characteristics of the mode-biased wavefront sensor and by associating the holographic multiplexing method with mode-biased one. The theoretical analyses and summaries on the mode-biased wavefront sensor resulted in the construction of simplified model, and verification to theoretical results was achieved by numerical simulation for several Zernike aberrations. The numerical simulation shows that, output signals of the sensor have different relationships with the amplitude of different types of tested aberrations, which is consistent with theory. To detect the spots intensity in the focal plane, the tested and biased aberrations, for instance the defocus mode, were dynamic