The 81st JSAP Autumn Meeting, 2020

Presentation information

Oral presentation

4 JSAP-OSA Joint Symposia 2020 » 4.7 Quantum Optics and Nonlinear Optics

[10a-Z23-1~8] 4.7 Quantum Optics and Nonlinear Optics

Thu. Sep 10, 2020 8:30 AM - 11:45 AM Z23

Takashige Omatsu(Chiba Univ.), Takuya Hirano(Gakushuin Univ.)

10:15 AM - 10:45 AM

[10a-Z23-5] [INVITED]High Harmonic Generation in Metals and Doped Semiconductors

Koichiro Tanaka1, Kousei Shimomura1, Kohei Nagai1, Kento Uchida1 (1.Kyoto Univ.)

Keywords:high harmonic generation, infrared light, ultrafast

Recent development of femtosecond mid-infrared laser has been promoting nonlinear optics in solids to enter an extreme regime, where light-matter interaction energy (or Rabi frequency) becomes comparable with the scale of electronic transition energy. Higher-order harmonic generation (HHG) is a typical extreme nonlinear optics in solids. This has opened a new platform for investigating the ultrafast electron dynamics in the multi-terahertz region, because it clearly reflects the electron motion driven by the intense sub-cycle laser fields. In this talk, we will show HHG spectra in several low dimensional materials which have different conductive properties, including metals. In metals, a simple intraband current model reproduces the experimental data well. We also show a photo-doping and electro-doping effects on HHG. Common features and individual aspects will be discussed.