Experimental investigation on partially coherent higher-order non-diffractive beams |
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| Authors: | Chen Guang-Ming Hua Li-Min Lin Hui-Chuan Pu Ji-Xiong |
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| Affiliation: | College of Information Science & Engineering, Huaqiao University, Quanzhou 362021, China; College of Fujian Education, Fuzhou 350025, China |
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| Abstract: | We experimentally study the generation of a partially coherent non-diffractive beam by focusing a partially coherent vortex beam with an axicon. The investigation results show that when the partially coherent vortex beam is focused by the axicon, the beam is transferred into a partially coherent higher-order non-diffractive beam. In the non-diffractive zone, the transverse intensity distribution of the partially coherent higher-order non-diffractive beam is invariant during propagation. In addition, the range of the non-diffractive zone is related to the coherence of the partially coherent vortex beam. The poorer the coherence of the partially coherent vortex beam, the shorter the range of the non-diffractive zone. |
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| Keywords: | physical optics higher-order non-diffractive Bessel beam axicon partially coherence |
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