Servo-modulator system used in a 2D shearing interferometer

G. García-Torales; J. L. Flores; J. G. Mateos Suárez; R. X. Muñoz

doi:10.1117/12.681343

5 September 2006 Servo-modulator system used in a 2D shearing interferometer

G. García-Torales, J. L. Flores, J. G. Mateos Suárez, R. X. Muñoz

Proceedings Volume 6289, Novel Optical Systems Design and Optimization IX; 628917 (2006) https://doi.org/10.1117/12.681343
Event: SPIE Optics + Photonics, 2006, San Diego, California, United States

Abstract

An improvement of a 2D shearing interferometer to measure small and large non-rotationally symmetrical wavefronts aberrations is described. This interferometric system encompasses large and differential wavefront displacements using a high accuracy rotation system incorporated in a Mach-Zehnder interferometer. The rotation of the prism arrangement is controlled with an electronic servomotor system by means of an auto-tuning using a Neural Network Algorithm, NNA. We describe the servo-mechanical system, the electronic interface and algorithms to control the performance of the rotation device with the aim of obtain accurate wave front position by a prism rotator system.

Citation Download Citation

G. García-Torales, J. L. Flores, J. G. Mateos Suárez, and R. X. Muñoz "Servo-modulator system used in a 2D shearing interferometer", Proc. SPIE 6289, Novel Optical Systems Design and Optimization IX, 628917 (5 September 2006); https://doi.org/10.1117/12.681343

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