Rotationally-shearing interferometer: preliminary results with a simulator solar system

M. Strojnik; B. Bravo-Medina; R. R. Baltazar-Barron

doi:10.1117/12.2532401

9 September 2019 Rotationally-shearing interferometer: preliminary results with a simulator solar system

M. Strojnik, B. Bravo-Medina, R. R. Baltazar-Barron

Proceedings Volume 11128, Infrared Remote Sensing and Instrumentation XXVII; 1112816 (2019) https://doi.org/10.1117/12.2532401
Event: SPIE Optical Engineering + Applications, 2019, San Diego, California, United States

Abstract

We describe preliminary experimental results on the identification of a planet in a simulated solar system using a rotationally shearing interferometer. We use two lasers, placed at approximately 90 degrees with respect to each other, each with a beam expander and a common collimator lens, to simulate the wave fronts from the star and offaxis planet. We confirm the theoretical prediction that the off-axis planet produces fringes whose density increases with the angle of rotation of the Dove prism in the rotational shearing interferometer. The star generates a uniform wave front that is invariant to the angle of rotation of the Dove prism, enhancing the variable fringes arising from tilted off-axis planet wave front. The inclination and density of planet fringes are under control of the experimentalist.

Citation Download Citation

M. Strojnik, B. Bravo-Medina, and R. R. Baltazar-Barron "Rotationally-shearing interferometer: preliminary results with a simulator solar system", Proc. SPIE 11128, Infrared Remote Sensing and Instrumentation XXVII, 1112816 (9 September 2019); https://doi.org/10.1117/12.2532401

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