2016/12/13 by Tomohiro Tamaya, T. Tamaya, A. Ishikawa +3 · 37 citations
Chemistry · Engineering · Physics and Astronomy · #Absorption (acoustics) #Band gap #Chemistry #Condensed matter physics #Electric field #Elliptical polarization #High harmonic generation #Laser #Laser-Matter Interactions and Applications #Linear polarization #Optics #Optoelectronics #Physics #Polarization (electrochemistry) #Quantum mechanics #Semiconductor #Semimetal #Spectroscopy and Quantum Chemical Studies #Terahertz technology and applications #Voltage #Zener diode #cond-mat.mtrl-sci #physics.optics
paper · pdf · doi:10.1103/physrevb.94.241107
published in Physical review. B./Physical review. B 94(24) (American Physical Society) · 16 pages, 5 figures
openalex publication_date 2016/12/13 · arxiv created 2016/12/27 · arxiv updated 2016/12/28 · openalex created_date 2017/01/06 · openalex updated_date 2026/08/05
We theoretically investigated the dependence of higher-order harmonic generation (HHG) in solid-state materials on the ellipticity of the electric field. We found that in the multiphoton absorption and ac Zener regimes, the intensity of HHG monotonically decreases with increasing ellipticity of the incident electric field, while in the semimetal regime, the intensity reaches a maximum for finite values of ellipticity. Moreover, the characteristics of the polarization of the emitted HHG change depending on the field intensity; only parallel emissions with respect to the major axis exist in the multiphoton absorption and ac Zener regimes, while both parallel and perpendicular emissions exist in the semimetal regime. These peculiar characteristics of the semimetal regime can be understood on the basis of changes in the HHG mechanism and may be able to be identified in experiments utilizing solid-state materials such as narrow-gap semiconductors.