Simultaneous direct and indirect wavefront sensing using multiplexed programmable grating patterns

Biswajit Pathak

doi:10.1117/12.2598361

1 August 2021 Simultaneous direct and indirect wavefront sensing using multiplexed programmable grating patterns

Biswajit Pathak

Proceedings Volume 11817, Applied Optical Metrology IV; 118170Q (2021) https://doi.org/10.1117/12.2598361
Event: SPIE Optical Engineering + Applications, 2021, San Diego, California, United States

Abstract

Direct wavefront sensing is commonly performed by using a popular Shack-Hartmann wavefront sensor. On the other hand, indirect wavefront sensing is performed based on an image quality metric by acquiring a sequence of images in which pre-determined amount of aberrations modes are incorporated. Both the sensing approaches have their advantages and disadvantages depending on specific applications. In the present work, we propose simultaneous realization of both the sensing approaches with broader applications by using a multiplexed programmable binary diffraction grating pattern. We present proof-of-concept simulation results that demonstrate the working of the proposed multiplexed grating array based wavefront sensor (MGAWS) and its flexibility in easy switching between both the sensing approaches to estimate the wavefront accurately.

Conference Presentation

Citation Download Citation

Biswajit Pathak "Simultaneous direct and indirect wavefront sensing using multiplexed programmable grating patterns", Proc. SPIE 11817, Applied Optical Metrology IV, 118170Q (1 August 2021); https://doi.org/10.1117/12.2598361

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