Zhou Meiling 1, Peng Yulian 1, Chen Chidao 1, Chen Bo 1, Peng Xi 1, Deng Dongmei 1, 2, †,
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The maximum intensities of beams shown with curves a–e versus propagation distance, curves a1–e1 in panel (a) correspond to those in Fig. 1, respectively, and curves a2–e2 in panel (b) correspond to those in Fig. 2, respectively. |