Role of Bloch oscillation in high-order harmonic generation from periodic structure<xref rid="cpb_28_11_114205fn1" ref-type="fn">*</xref><fn id="cpb_28_11_114205fn1"><label>*</label><p>Project supported by the NSAF, China (Grant No. U1730449) and the National Natural Science Foundation of China (Grant Nos. 11904341, 11774322, 91850201, and 11874066).</p></fn>

Role of Bloch oscillation in high-order harmonic generation from periodic structure**

Project supported by the NSAF, China (Grant No. U1730449) and the National Natural Science Foundation of China (Grant Nos. 11904341, 11774322, 91850201, and 11874066).

Liu Lu¹, Zhao Jing², Yuan Jian-Min^{1, 2}, Zhao Zeng-Xiu^{2, †}

(a) The 3200 nm laser field with black line, the 3200 nm + 1000 nm laser field with red thick line. The temporal population of electron in CB (b) under the 1-color laser field, and (c) under the 2-color laser field. The attosecond pulse synthesized from 100^th order to 200^th order harmonics in the 1-color laser field (d), and 2-color laser field (e).