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Behavior of imperfect band-limited coronagraphic masks in a high-contrast imaging system
We investigate the behavior of imperfect band-limited occulting masks in a high-contrast imaging system through modeling and simulations. Grayscale masks having 1D Sinc 2 (linear-Sinc 2 ) amplitude transmission coefficient (Sinc 4 intensity transmittance) profiles as well as optical density and wavelengthdependent parasitic phases are considered occulters. We compare the behaviors of several, slightly different occulter transmittance profiles by evaluating the contrast performance of thedoi:10.1364/ao.46.001397 pmid:17334428 fatcat:pxakp4rt4vbhzfernqnia3lhg4