Numerical simulation of sensorless adaptive phase correction of regular, vortical, and incoherent multimode laser beams
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Some aspects are considered of the phase correction of regular and vortex (speckled) laser beams by a flexible adaptive mirror, with the surface control using the stochastic parallel gradient (SPG) algorithm, without wavefront sensor. It is shown that the optimal choice of the criterion function (metric) and basis functions allows one to improve the phase correction accuracy and the rate of SPG algorithm convergence. A possibility of partial phase correction of incoherent multimode radiation is shown to be implementable, e.g., in a laser cavity with an optically inhomogeneous gain medium.
Keywordsadaptive mirror phase correction of laser beam optical aberrations stochastic parallel gradient algorithm
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- 3.F. A. Starikov, G. G. Kochemasov, S. M. Kulikov, A. N. Manachinsky, N. V. Maslov, A. V. Ogorodnikov, S. A. Sukharev, V. P. Aksenov, I. V. Izmailov, F. Yu. Kanev, V. V. Atuchin, and I. S. Soldatenkov, “Wave front reconstruction of an optical vortex by Hartmann–Shack sensor,” Opt. Lett. 32 (16), 2291–2293 (2007).ADSCrossRefGoogle Scholar
- 5.F. A. Starikov, G. G. Kochemasov, M. O. Koltygin, S.M. Kulikov, A. N. Manachinsky, N. V. Maslov, S. A. Sukharev, V. P. Aksenov, I. V. Izmailov, F. Yu. Kanev, V. V. Atuchin, and I. S. Soldatenkov, “Correction of vortex laser beam in a closed-loop adaptive system with bimorph mirror,” Opt. Lett. 34 (15), 2264–2266 (2009).ADSCrossRefGoogle Scholar
- 6.A. A. Babin, O. I. Beloshitskaya, V. A. Bogachev, S. G. Garanin, M. A. Glukhov, M. O. Koltygin, A. V. Kopalkin, R. S. Kuzin, S. M. Kulikov, A. N. Manachinsky, S. N. Nosov, F. A. Starikov, S. A. Suharev, and V.V. Feoktistov, “Measurement of optical distortions of a cesium vapor laser by means of Shack–Hartmann sensor,” in Technical Program of the 16th Int. Conf. on Laser Optics “LO-2014". St. Petersburg, June 30–July 4, 2014, p. 33.Google Scholar