This article is cited in 4 papers

Lasers, laser beams

Analysis of the effects of mismatched errors on coherent beam combining based on a self-imaging waveguide

R. Tao, X. Wang, Pu Zhou, Lei Si

College of Optoelectronic Science and Engineering, National University of Defense Technology, Changsha, Hunan

Abstract: A theoretical model of coherent beam combining (CBC) based on a self-imaging waveguide (SIW) is built and the effects of mismatched errors on SIW-based CBC are simulated and analysed numerically. With the combination of the theoretical model and the finite difference beam propagation method, two main categories of errors, assembly and nonassembly errors, are numerically studied to investigate their effect on the beam quality by using the M² factor. The optimisation of the SIW and error control principle of the system is briefly discussed. The generalised methodology offers a good reference for investigating waveguide-based high-power coherent combining of fibre lasers in a comprehensive way.

Keywords: self-imaging effects, laser beam combining, fibre lasers.

Received: 21.06.2014
Revised: 05.11.2014

 English version: Quantum Electronics, 2016, 46:1, 61–67

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