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Proceedings Paper

The technique of high power laser beam combination using liquid crystal spatial light modulator
Author(s): Ying-ying Duan; Xiang-ru Wang; Zi-qiang Huang
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Paper Abstract

Based on the phase modulation characteristics of optically addressed liquid crystal spatial light modulator (OA-LC-SLM) which is realized by controlling the power of addressing light, a physical model of coherent beam combination fiber laser using a bunch of fibers and a device of OA-LC-SLM is established on the theory of diffraction optics and liquid crystal birefringence effect. On the basis of this model, the properties of given scheme of coherent beam combination fiber laser are investigated including main lobe distribution and ability of phase modulation. Meanwhile, the plot functions of phase modulation versus the optical power of addressing light are obtained on different given driving voltage conditions and fiber alignment parameters such as core diameter and filling factor. After the numerical simulation, it shows that, this coherent beam combination fiber laser using OA-LC-SLM demonstrates an ability of coherent beam combination on the far field. With the increase of core diameter, the combination efficiency is improved better, and the divergence angle decreases narrower.

Paper Details

Date Published: 17 September 2013
PDF: 10 pages
Proc. SPIE 8904, International Symposium on Photoelectronic Detection and Imaging 2013: High Power Lasers and Applications, 89040X (17 September 2013); doi: 10.1117/12.2034017
Show Author Affiliations
Ying-ying Duan, Univ. of Electronic Science and Technology of China (China)
Xiang-ru Wang, Univ. of Electronic Science and Technology of China (China)
Zi-qiang Huang, Univ. of Electronic Science and Technology of China (China)


Published in SPIE Proceedings Vol. 8904:
International Symposium on Photoelectronic Detection and Imaging 2013: High Power Lasers and Applications
Andreas Tünnermann; Zejin Liu; Pu Wang; Chun Tang, Editor(s)

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