The transformation of an intensity distribution from Gaussian to a flattop, doughnut, etc. still is a very interesting and important task. And the necessary result could be obtained with the use of adaptive optics that changes the phase of the beam and modifies the shape of the focal spot in the far-field zone. In this paper, we present the flattop and doughnut beam formation result with the use of a bimorph and stacked-actuator deformable mirrors as well as LC phase modulator. The experimental results are also given.
Julia Sheldakova, Alexis Kudryashov, Ilya Galaktionov, Vadim Samarkin, Alexander Nikitin, and Alexey Rukosuev, "Formation of the doughnut and Super-Gaussian intensity distribution by means of different types of wavefront correctors," Proc. SPIE 10518, Laser Resonators, Microresonators, and Beam Control XX, 105181E (Presented at SPIE LASE: February 01, 2018; Published: 16 February 2018); https://doi.org/10.1117/12.2297089.
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