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题名:
Numerical analysis of beam quality factor β on coherent combination of multiple laser beams
作者: Tan, Yi1,2,3; Li, Xinyang1,2
出版日期: 2012
会议名称: Proceedings of SPIE: High-Power Lasers and Applications VI
会议日期: 2012
DOI: 10.1117/12.999816
通讯作者: Tan, Y. (tanyi@mail.ustc.edu.cn)
中文摘要: A numerical simulation model for coherent combination of multiple rectangular beams, square beams and circular beams has been developed. The beam quality factor β of wavelet and its combination was obtained by numerical calculation through fast Fourier transform (FFT) when each wavelet has Zernike aberrations with twenty-one polynomials. The influence of piston on coherent beam combination was analyzed too. It's demonstrated that the influence of piston on CBC(coherent beam combination) was small if each wavelet has many other higher order aberrations. The relationship between the averaged beam quality factor β of all wavelets and beam quality factor β of CBC based on these wavelets was also obtained by numerical calculation. A fitting formula was used to fit the discrete data. By this way, an expression of the relationship was acquired. Fitting coefficients between numerical calculation and theoretical result were compared and the affecting factor of the difference was analyzed. We concluded that fitting coefficients of numerical calculation result was smaller than theoretical result because of wavelet arrangement and filling ratio. © 2012 SPIE.
英文摘要: A numerical simulation model for coherent combination of multiple rectangular beams, square beams and circular beams has been developed. The beam quality factor β of wavelet and its combination was obtained by numerical calculation through fast Fourier transform (FFT) when each wavelet has Zernike aberrations with twenty-one polynomials. The influence of piston on coherent beam combination was analyzed too. It's demonstrated that the influence of piston on CBC(coherent beam combination) was small if each wavelet has many other higher order aberrations. The relationship between the averaged beam quality factor β of all wavelets and beam quality factor β of CBC based on these wavelets was also obtained by numerical calculation. A fitting formula was used to fit the discrete data. By this way, an expression of the relationship was acquired. Fitting coefficients between numerical calculation and theoretical result were compared and the affecting factor of the difference was analyzed. We concluded that fitting coefficients of numerical calculation result was smaller than theoretical result because of wavelet arrangement and filling ratio. © 2012 SPIE.
收录类别: Ei
语种: 英语
卷号: 8551
ISSN号: 0277786X
文章类型: 会议论文
页码: 85511C
Citation statistics:
内容类型: 会议论文
URI标识: http://ir.ioe.ac.cn/handle/181551/7796
Appears in Collections:自适应光学技术研究室(八室)_会议论文

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作者单位: 1. Laboratory of Adaptive Optics, Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu 610209, China
2. Key Laboratory of Adaptive Optics, Chinese Academy of Sciences, Chengdu 610209, China
3. Graduate School of the Chinese Academy of Sciences, Beijing 100039, China

Recommended Citation:
Tan, Yi,Li, Xinyang. Numerical analysis of beam quality factor β on coherent combination of multiple laser beams[C]. 见:Proceedings of SPIE: High-Power Lasers and Applications VI. 2012.
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