Optimizing cores array for coherent beam combining with multi-core double-clad fiber laser

zhang xiaolu; lou shuqin; wang liwen

Volume 23 Issue 08

Sep. 2011

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Article Navigation > High Power Laser and Particle Beams > 2011 > 23(08): 0-

zhang zi-cheng, yang han-wu, zhang jian-de, et al. Experimental studies on repetitive pulsed power modulator with compact Tesla transformer[J]. High Power Laser and Particle Beams, 2008, 20.

Citation:

zhang xiaolu, lou shuqin, wang liwen. Optimizing cores array for coherent beam combining with multi-core double-clad fiber laser[J]. High Power Laser and Particle Beams, 2011, 23.

zhang zi-cheng, yang han-wu, zhang jian-de, et al. Experimental studies on repetitive pulsed power modulator with compact Tesla transformer[J]. High Power Laser and Particle Beams, 2008, 20.

Citation:

zhang xiaolu, lou shuqin, wang liwen. Optimizing cores array for coherent beam combining with multi-core double-clad fiber laser[J]. High Power Laser and Particle Beams, 2011, 23.

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Optimizing cores array for coherent beam combining with multi-core double-clad fiber laser

1.
Key Laboratory of All Optical Network and Advanced Telecommunication Network of Ministry of Education,Beijing Jiaotong University,Beijing 100044,China;
2.
Institute of Lightwave Technology,Beijing Jiaotong University,Beijing 100044,China

Publish Date: 2011-09-13

Abstract

Abstract

Based on diffraction theory, this paper deduces the equation of coherent beam intensity in far-field of with multi-core double-clad fiber. The effects of different fiber core arrays, especially single ring array, multilayer rings array, rectangular array and hexagon array, on the final quality of beam combination are investigated. The effects of different parameters including core diameter, core space, the distance between output plane and diffraction plane and wavelength are also studied. Numerical results demonstrate that, for given core number, single ring array is the best scheme among the above four core array in order to realize high quality beam combination, and the next one is rectangular array. Increasing core number can increase cross section utilization ratio，thus producing hig
- coherent beam combination,
- fiber laser,
- multi-core double-clad fiber,
- diffraction model,
- core array

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