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arXiv 1401.5643physics.atom-ph
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阿秒光-原子相互作用中的空穴燃烧和高阶光子效应

Hole burning and higher order photon effects in attosecond light-atom interaction

P. L. Price, L. D. Noordam, H. B. van Linden van den Heuvell, F. Robicheaux

摘要:

我们已经进行了计算的阿秒激光原子相互作用的激光强度,有趣的两个和三个光子效应成为相关的。特别是,我们研究的情况下,“烧孔”在初始轨道。当激光脉冲持续时间短于经典径向周期时,由于电子优先吸收核附近的光子,因此存在烧孔。我们还研究了三光子拉曼过程如何导致一个光子吸收附近的能量在出射电子中的时间延迟。对于氢$2s$态的激发,当激发强度为$2.2\times 10^{16}$ W/cm $^2$时,电子的出射延迟为6阿秒,我们认为这种延迟是由于初始态的空穴燃烧引起的.

英文摘要:

We have performed calculations of attosecond laser-atom interactions for laser intensities where interesting two and three photon effects become relevant. In particular, we examine the case of "hole burning" in the initial orbital. Hole burning is present when the laser pulse duration is shorter than the classical radial period because the electron preferentially absorbs the photon near the nucleus. We also examine how 3 photon Raman process can lead to a time delay in the outgoing electron for the energy near one photon absorption. For excitation out of the hydrogen $2s$ state, an intensity of $2.2\times 10^{16}$ W/cm$^2$ leads to a 6 attosecond delay of the outgoing electron. We argue that this delay is due to the hole burning in the initial state.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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