Study of compact terahertz source with parallel multi-beam Kaichun Zhang, Sidou Guo, Xiaoyan Zhao, Jincheng Hu, Haoran Zhang, Qian Xu and Diwei Liu Eur. Phys. J. D, 75 11 (2021) 295 Published online: 23 November 2021 DOI: 10.1140/epjd/s10053-021-00306-1