Self-focusing of partially coherent beams based on complex screen and split-step Fourier transform methods

Fanglun Yang; Guowen Zhang; Xiaoqi Zhang; Yanli Zhang; Ruifeng Wang; Jianqiang Zhu

doi:10.3788/COL202321.071901

Journals >Chinese Optics Letters >Volume 21 >Issue 7 >Page 071901 > Article

Chinese Optics Letters
Vol. 21, Issue 7, 071901 (2023)

Self-focusing of partially coherent beams based on complex screen and split-step Fourier transform methods

Fanglun Yang^1、2、3, Guowen Zhang^{2、3、4、*}, Xiaoqi Zhang^2、3, Yanli Zhang^2、3, Ruifeng Wang^2、3、4, and Jianqiang Zhu^2、3、**

Author Affiliations

¹School of Physical Sciences, University of Science and Technology of China, Hefei 230026, China

²Key Laboratory of High Power Laser and Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China

³National Laboratory on High Power Laser and Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China

⁴University of Chinese Academy of Sciences, Beijing 100049, China

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DOI: 10.3788/COL202321.071901 Cite this Article Set citation alerts

Fanglun Yang, Guowen Zhang, Xiaoqi Zhang, Yanli Zhang, Ruifeng Wang, Jianqiang Zhu. Self-focusing of partially coherent beams based on complex screen and split-step Fourier transform methods[J]. Chinese Optics Letters, 2023, 21(7): 071901 Copy Citation Text

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Fig. 1. Comparison of the analytical formula and the CS methods for overall self-focusing.

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Beam distribution with the initial intensity of 2.6 GW/cm2 after 400-mm transmission. (a), (b), (c), (d), and (e) correspond to the coherent beam, and C = 2, 5, 10, and 20, respectively. (f) The one-dimensional distribution corresponding to each light field at y = 0.

Fig. 2. Beam distribution with the initial intensity of 2.6 GW/cm² after 400-mm transmission. (a), (b), (c), (d), and (e) correspond to the coherent beam, and C = 2, 5, 10, and 20, respectively. (f) The one-dimensional distribution corresponding to each light field at y = 0.

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Fig. 3. Variation of the beam in (a) the modulation system and (b) the maximum intensity at an initial intensity of 2.6 GW/cm².

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Fig. 4. Beam distribution with the initial intensity of 4 GW/cm² after 400-mm transmission. (a), (b), (c), (d), and (e) correspond to the coherent beam, and C = 2, 5, 10, and 20, respectively. (f) The one-dimensional distribution corresponding to each light field at y = 0.

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Fig. 5. Variation of the beam in (a) the modulation system and (b) the maximum intensity at an initial intensity of 4 GW/cm².

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