| Autor: |
Yu, Shukai, Heffernan, Kate H., Talbayev, Diyar |
| Rok vydání: |
2016 |
| Předmět: |
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| Zdroj: |
Phys. Rev. B 95, 125201 (2017) |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1103/PhysRevB.95.125201 |
| Popis: |
We present an experimental and computational study of the nonlinear optical response of conduction electrons to intense terahertz (THz) electric field. Our observations (saturable absorption and an amplitude-dependent group refractive index) can be understood on the qualitative level as the breakdown of the effective mass approximation. However, a predictive theoretical description of the nonlinearity has been missing. We propose a model based on the semiclassical electron dynamics, a realistic band structure, and the free electron Drude parameters to accurately calculate the experimental observables in InSb. Our results open a path to predictive modeling of the conduction-electron optical nonlinearity in semiconductors, metamaterials, as well as high-field effects in THz plasmonics. |
| Databáze: |
arXiv |
| Externí odkaz: |
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