Atomic even-harmonic generation due to symmetry-breaking effects induced by spatially inhomogeneous field
Yue Guo(郭月), Aihua Liu(刘爱华), Jun Wang(王俊), Xueshen Liu(刘学深)
Chin. Phys. B . 2019, (9): 94212 -094212 .  DOI: 10.1088/1674-1056/ab37fa