Characterization of a Deformable Mirror for astronomical applications

I will demonstrate the compensation of a perturbed wavefront through the utilization of a deformable mirror. This involves an exploration of the modal framework and the decomposition of a wavefront using Zernike polynomials. The setup of a testing bench for the deformable mirror will be detailed, encompassing the construction, alignment, and stability testing of the optical setup. Additionally, I will cover the creation of an influence function, the creation of the best flat surface of the mirror, and the correction of pre-set perturbed wavefronts. Throughout these processes, Zernike parameters will be analyzed using interference images acquired by a professional Twyman-Green Interferometer.