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http://dx.doi.org/10.3807/KJOP.2020.31.6.290

Analysis of Power Degradation and Distortion in Coherent-Beam Combining with Lens Aberration  

Kim, Byungho (Department of Electrical and Computer Engineering, Seoul National University)
Na, Jeongkyun (Department of Electrical and Computer Engineering, Seoul National University)
Jeong, Yoonchan (Department of Electrical and Computer Engineering, Seoul National University)
Publication Information
Korean Journal of Optics and Photonics / v.31, no.6, 2020 , pp. 290-294 More about this Journal
Abstract
In this paper, we quantitatively analyze the effect of lens aberration on the degradation of beam-coupling efficiency of a tiled coherent-beam combining system. The Zernike polynomial is used to quantify the aberration of the lens, and Fresnel diffraction is applied to numerically simulate the change in the peak light intensity when combined at a distance. The results of this paper will be useful for quantitative prediction of the beam-combining efficiency that is degraded by aberration of the lens, and it is expected to be helpful for the optimal design of a practical tiled coherent beam-combining system.
Keywords
High power laser; Coherent beam combining; Aberration; Fresnel diffraction;
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Times Cited By KSCI : 4  (Citation Analysis)
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