| Effects of pressure and gas-jet thickness on the generation of attosecond poulser |
| |
| 作者姓名： | 李小勇 王国利 周效信 |
| |
| 作者单位： | [1]College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, China [2]Experimental Center, Northwest University for Nationalities, Lanzhou 730030, China |
| |
| 基金项目： | Project supported by the National Natural Science Foundation of China （Grant Nos. 11264036 and 11064013）. |
| |
| 摘 要： | We investigate how the intensity and duration of an attosecond pulse generated from high-order harmonic generation are affected by the pressure and thickness of the gas jet by taking into account the macroscopic propagation of both fun- damental and harmonic fields. Our simulations show that, limited by the propagation effects, especially the absorption of harmonics, the intensity of an attosecond pulse cannot be improved by just independently increasing the gas pressure or the medium length. On the other hand, due to good phase-matching conditions, the duration of a generated attosecond pulse can be improved by changing the gas pressure.
|
| 关 键 词： | high-order harmonic generation attosecond pulse macroscopic propagation |
| 本文献已被 维普 等数据库收录！ |
|
