Pyramidal wavefront sensor using diffractive lenses

Manuel P. Cagigal; José E. Oti; Miguel A. Cagigas; Pedro J. Valle

doi:10.1117/12.925336

13 September 2012 Pyramidal wavefront sensor using diffractive lenses

Manuel P. Cagigal, José E. Oti, Miguel A. Cagigas, Pedro J. Valle

Proceedings Volume 8447, Adaptive Optics Systems III; 84476I (2012) https://doi.org/10.1117/12.925336
Event: SPIE Astronomical Telescopes + Instrumentation, 2012, Amsterdam, Netherlands

Abstract

A new technique for high resolution wavefront sensing has been introduced. It is based on the Optical Differentiation wavefront sensor, however its application has required the development of a diffractive element that provides four or five copies of the original wavefront. It some aspect the result is similar to that provide by the Pyramid sensor although from a theoretical point of view is more close to the Modified Hartmann sensor. Here we introduce the theoretical background and principles along with an example of phase derivative estimate based on a computer simulation. The technique looks very promising since it is simple, with high resolution, without moving parts and allows us an easy post processing to recover Zernike coefficients. Nevertheless, a lot of work has to be completed to a proper evaluation of its actual capabilities, noise, resolution, etc.

Citation Download Citation

Manuel P. Cagigal, José E. Oti, Miguel A. Cagigas, and Pedro J. Valle "Pyramidal wavefront sensor using diffractive lenses", Proc. SPIE 8447, Adaptive Optics Systems III, 84476I (13 September 2012); https://doi.org/10.1117/12.925336

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