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Kvantovaya Elektronika, 2015, Volume 45, Number 12, Pages 1125–1131 (Mi qe16293)  

Control of laser radiation parameters

Numerical investigation of multichannel laser beam phase locking in turbulent atmosphere

V. A. Volkov, M. V. Volkov, S. G. Garanin, F. A. Starikov

Federal State Unitary Enterprise "Russian Federal Nuclear Center — All-Russian Research Institute of Experimental Physics", Sarov, Nizhny Novgorod region

Abstract: The efficiency of coherent multichannel beam combining under focusing through a turbulent medium on a target in the cases of phase conjugation and target irradiation in the feedback loop is investigated numerically in various approximations. The conditions of efficient focusing of multichannel radiation on the target are found. It is shown that the coherent beam combining with target irradiation in the feedback loop, which does not require a reference beam and wavefront measurements, is as good as the phase conjugation approach in the efficiency of focusing. It is found that the main effect of focusing is provided by properly chosen phase shifts in the channels, whereas taking into account local wavefront tip tilts weakly affects the result.

Keywords: coherent beam combining of multichannel cw laser radiation, stochastic parallel gradient algorithm.
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English version:
Quantum Electronics, 2015, 45:12, 1125–1131

Bibliographic databases:

PACS: 42.60.By, 42.68.Bz, 42.25.Dd, 42.25.Fx
Received: 18.06.2015
Revised: 19.08.2015

Citation: V. A. Volkov, M. V. Volkov, S. G. Garanin, F. A. Starikov, “Numerical investigation of multichannel laser beam phase locking in turbulent atmosphere”, Kvantovaya Elektronika, 45:12 (2015), 1125–1131 [Quantum Electron., 45:12 (2015), 1125–1131]

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  • http://mi.mathnet.ru/eng/qe16293
  • http://mi.mathnet.ru/eng/qe/v45/i12/p1125

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  • Квантовая электроника Quantum Electronics
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