Analysis of coherent combination characteristics of beam array via tight focusing

Zhe-Qiang Zhong; Jie Mu; Xiao Wang; Bin Zhang

doi:10.7498/aps.69.20200034

Journals >Acta Physica Sinica >Volume 69 >Issue 9 >Page 094204-1 > Article

Acta Physica Sinica
Vol. 69, Issue 9, 094204-1 (2020)

Analysis of coherent combination characteristics of beam array via tight focusing

Zhe-Qiang Zhong¹, Jie Mu^2、3、4, Xiao Wang^2、3、4, and Bin Zhang^1、*

Author Affiliations

¹College of Electronics and Information Engineering, Sichuan University, Chengdu 610065, China

²Laser Fusion Research Center, China Academy of Engineering Physics, Mianyang 621900, China

³Science and Technology on Plasma Physics Laboratory, Mianyang 621900, China

⁴Collaborative Innovation Center of IFSA (CICIFSA), Shanghai Jiao Tong University, Shanghai 200240, China

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DOI: 10.7498/aps.69.20200034 Cite this Article

Zhe-Qiang Zhong, Jie Mu, Xiao Wang, Bin Zhang. Analysis of coherent combination characteristics of beam array via tight focusing[J]. Acta Physica Sinica, 2020, 69(9): 094204-1 Copy Citation Text

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Fig. 1. Light path of beam combination of beam array via tight focusing.

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Fig. 2. Beam configurations: (a) Rectangle; (b) hexagon.

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Fig. 3. Tight-focused spots of beam array with different polarization states under rectangle configuration.

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Fig. 4. Tight-focused spots of beam array with different polarization states under hexagon configuration.

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Fig. 5. PIB curves of the focal spots of beam array with different beam configurations and polarization states.

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Fig. 6. Focused intensity distribution of beam array with different polarization states under rectangle configuration.

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Fig. 7. Focused spots of beam array with different beam widths and γ under rectangle configuration.

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Fig. 8. PIB curves of the focal spots of beam array with different (a) beam widths and (b) γ under rectangle configuration.

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$PIB curves of the focal spots of beam array with numerical apertures and refractive indices under rectangle configuration.$

Fig. 9. PIB curves of the focal spots of beam array with numerical apertures and refractive indices under rectangle configuration.

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偏振态	线偏振	左旋圆偏振	径向偏振	角向偏振
矩阵	$\left[ \begin{aligned} 1 \\ 0 \\ 0 \\ \end{aligned} \right]$	$\left[ \begin{aligned} { {1{\rm{i} } } }/{ {\sqrt 2 } } \\ {1}/{ {\sqrt 2 } } \\ 0\;\;\end{aligned} \;\right]$	$\left[ \begin{aligned} \cos \varphi \\ \sin\; \varphi \\ 0\;\;\;\end{aligned} \right]$	$\left[ \begin{aligned} - \sin \varphi \\ \cos \varphi \\ 0\;\;\;\;\end{aligned} \right]$

Table 1. Matrixes P₀(θ, φ)^[14] of different polarization states.

	束宽/ μm
	80	100	120
γ = 2.2	63.5%	75.2%	88.4%
γ = 2.6	70.0%	79.4%	89.5%

Table 2.

Combining efficiency of beam array with circular polarization under rectangle configuration.

矩形排布方式下, 圆偏振阵列光束的合成效率

	介质
	空气					水	油
NA	0.75	0.80	0.85	0.90	0.95	0.95	0.95
阵列光束焦斑半径/μm	0.50	0.49	0.47	0.46	0.45	0.40	0.35

Table 3.

Focal-spot width of beam array with numerical apertures and refractive indices under rectangle configuration.

不同数值孔径和介质下, 阵列光束焦斑尺寸

Zhe-Qiang Zhong, Jie Mu, Xiao Wang, Bin Zhang. Analysis of coherent combination characteristics of beam array via tight focusing[J]. Acta Physica Sinica, 2020, 69(9): 094204-1

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