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.

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V. Bogachev

Russian Federal Nuclear Center

编辑信件的主要联系方式.
Email: bogachev.v@mail.ru
俄罗斯联邦, Sarov, 607190

S. Garanin

Russian Federal Nuclear Center; National Research Nuclear University MEPhi

Email: bogachev.v@mail.ru
俄罗斯联邦, Sarov, 607190; Moscow, 115409

F. Starikov

Russian Federal Nuclear Center; Sarov Physical-Technical Institute MEPhi

Email: bogachev.v@mail.ru
俄罗斯联邦, Sarov, 607190; Sarov, 607186

R. Shnyagin

Russian Federal Nuclear Center

Email: bogachev.v@mail.ru
俄罗斯联邦, Sarov, 607190

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