Terahertz Nonlinear Optics of Graphene: From Saturable Absorption to High‐Harmonics Generation

• DOI: 10.1002/adom.201900771
• Publication Date: 2019-11-04T09:46:27Z
• Authors: Hassan A. Hafez; Sergey Kovalev; Klaas‐Jan Tielrooij; Mischa Bonn; Michael Gensch; Dmitry Turchinovich
• Keywords: Optical rectification; Saturable absorption

Abstract Graphene has long been predicted to show exceptional nonlinear optical properties, especially in the technologically important terahertz (THz) frequency range. Recent experiments have shown that this atomically thin material indeed exhibits possibly largest coefficients of any known date, paving way for practical graphene‐based applications ultrafast (opto‐)electronics operating at THz rates. Here advances booming field optics graphene are reported, and state‐of‐the‐art understanding nature interaction with fields based on thermodynamic model electron transport is described. A comparison between different mechanisms light THz, infrared, visible ranges also provided. Finally, perspectives expected technological its extraordinary properties summarized. This report covers evolution from very pioneering works. It serves as a concise overview current compact reference researchers entering field, well technology developers.