| Enhanced THz Radiation from Spatially Inhomogeneous Fields |
| |
| 作者姓名： | 贾光瑞 赵登欣 张松松 岳梓巍 秦朝朝 焦照勇 卞学滨 |
| |
| 作者单位： | 1. School of Physics, Henan Normal University |
| |
| 基金项目： | supported by the National Natural Science Foundation of China (Grants Nos. 12174090 and 12074105)；;the Science and Technology Project of Henan Province (Grant No. 22210210176)； |
| |
| 摘 要： | Nonlinear terahertz(THz) radiation from gas media usually relies on the asymmetric laser-induced current produced by ultra-intense two-color laser fields with a specific phase delay. Here a new scheme is proposed and theoretically investigated, in which the radiation is generated by spatially inhomogeneous fields induced by relatively low-intensity monochromatic lasers and an array of single triangular metallic nanostructures. Our simulations are based on the classical photocurrent model and the...
|
|
