Abstract
In the present work, we propose a programmable multiplexed
grating-based wavefront sensor (MGWS) to realise zonal and modal
wavefront sensing approaches simultaneously. This is implemented by
employing different bit-planes of a color image such that zonal
wavefront sensing is performed with enhanced spatial resolution and
modal wavefront sensing is performed to measure a large number of
aberration modes present in the incident wavefront, simultaneously. We
present proof-of-concept simulation results that demonstrate the
working of the proposed MGWS and its ability to compensate for the
presence of large number of aberration modes significantly, in
comparison to either of the sensing approaches when used
independently. Further, simulation results are included to quantify
the same by considering an optical imaging system to image an array of
two-dimensional bead objects. The proposed sensor is flexible in easy
switching between either of the sensing approaches and the number of
bit-planes can be increased conveniently to further improve the
performance of the proposed MGWS.
Subject
Atomic and Molecular Physics, and Optics