Optical conductivity of an electron gas driven by a pulsed terahertz radiation field Hongying Mei, Haifeng Yuan, Hua Wen, Haizi Yao, Shuxiang Sun, Xinyan Zheng, Fang Liu, Haowen Li and Wen Xu Eur. Phys. J. B, 95 7 (2022) 111 Published online: 16 July 2022 DOI: 10.1140/epjb/s10051-022-00363-4