Generation of Broadband Attosecond Pulse via Controlling Quantum Path by Two Color Field in Long Wavelength Driving Regime

在这份报纸，我们理论上在通过解决时间依赖者 Schr 在 2000 nm 驾驶政体的长波长调查了高泛音产生表格氦原子 ? dinger 方程。由把第二泛音脉搏( 1000 nm )和紫外 attosecond 脉搏( 200 nm )加到开车的地，为选出并且提高电离路径产生产量很高的 supercontinuum 泛音的一个有效方法被认识到，然后孤立的 sub-100 显著地作为有 190 eV 的带宽的脉搏被获得。

In this paper, we have investigated theoretically the high harmonic generation form helium atom in long wavelength driving regime at 2000 nm through solving time-dependent Schr6dinger equation. By adding a second harmonic pulse （1000 nm） and a UV attosecond pulse （200 nm） to the driving field, an efficient method for picking out and enhancing ionization path to generate high-yield supercontinuum harmonics is realized, and then an isolated sub-100 as pulse with a bandwidth of 190 eV is significantly obtained.