476 / 2019-03-17 00:56:08

Effect of transition dipole on high order harmonic generation in solids

ultrafast laser; strong field; high-order harmonic generation; solid materials

全体主题 > Fundamental Physics at Extremes

Interaction of intense lasers with solid materials offers an alternative way to achieve high-order harmonic generation (HHG) [1]. Based on solving extended semiconductor Bloch equations, we theoretically investigated the role of transition dipole on high order harmonic generation in solids and demonstrated both transition dipole amplitude [2] and phase [3] have an effect on the harmonic emission. Besides, we studied the orientation-dependent harmonic spectra and show that band energies of high-lying unoccupied bands and low-lying occupied ones can be extracted from laser polarization dependent high harmonic spectra [4].

[1] C. Yu, S. Jiang, and R. F. Lu, Advances in Physics: X 4, 1562982 (2019).
[2] C. Yu, X. Zhang, S. Jiang, X. Cao, G. Yuan, T. Wu, L. Bai, and R. F. Lu, Physical Review A 94, 013846 (2016).
[3] S. C. Jiang, H. Wei, J. G. Chen, C. Yu, R. F. Lu, and C. D. Lin, Phys. Rev. A 96, 053850 (2017).
[4] C. Yu, S. Jiang, T. Wu, G. Yuan, Z. Wang, C. Jin, and R. F. Lu, Phys. Rev. B 98, 085439 (2018).