What is HHG?
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High-harmonic generation (HHG) is a fundamental nonlinear optical phenomenon that involves the upconversion of coherent radiation through the interaction of a strong and short laser pulse with atoms, molecules, and solids. It has applications in various fields such as attosecond science, ultrashort pulse generation, and strong-field physics. HHG can be achieved in gaseous media as well as in semiconductors and dielectrics. In gaseous media, the generation is described at the microscopic scale of a single atom or molecule interacting with the laser pulse . In semiconductors, HHG can be actively controlled through the engineering of interband polarization in monolayer semiconductors, allowing for efficient modulation and ultrafast response speeds . In solids, HHG is influenced by the band structure of the material, and recent studies have revealed the effect of spin-charge coupling on HHG in correlated materials .
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| HHG stands for High-order harmonic generation, which is the nonlinear upconversion of coherent radiation resulting from the interaction of a strong and short laser pulse with atoms, molecules, and solids. | |
02 Mar 2022 | HHG stands for high-harmonic generation, which is a fundamental nonlinear optical phenomenon. |
| High-order harmonic generation (HHG) is a tabletop source of VUV radiation with many applications. | |
| HHG stands for high-harmonic generation, which is a process where a gaseous medium interacts with an infrared laser pulse to generate high-frequency light. | |
28 Oct 2022 2 Citations | HHG stands for high-harmonic generation, an extreme nonlinear optical phenomenon that is discussed in the paper. |
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