Zn-Porphyrin 高阶谐波光谱的研究
he High-order Harmonic Generation of Zn-Porphyrin
在含时密度泛函理论的基础上，本文对Zn-Porphyrin分子在强激光外场作用下的高阶谐波光谱以及其在产生非线性光谱过程中的电子动力学过程进行了研究。相比于其它的卟啉金属衍生物，Zn-Porphyrin具有很好的非线性性质，在外激光场并不是很强的情况下即可以产生较高阶数的谐波光谱。谐波光谱会受到外激光脉冲强度以及极化方向的影响。在线偏振光中，谐波谱线出现在所有的奇数位上；而在圆偏振光中，谐波光谱则遵循n=4k±1的选择定则。对于诱导电子密度的研究说明在外场的作用下，电子会发生运动。在圆偏振光中，电子将绕着卟啉环旋转，从而形成环形的价电子流。
In this paper，the high-order harmonic generation (HHG) spectra of Zn-porphyrin molecule have been studied theoretically using time-dependent density functional theory. It is found that the harmonic of Zn-Porphyrin molecule is sensitive to the field intensity and polarization. In the linearly polarized (LP) external field, all odd order HHG can be found; and in the circularly polarized (CP) external field, HHG of Zn-Porphyrin molecule follow the selection rule n=4k±1. The time evolution of induced charge density is displayed. CP laser pulse drives the charges to move along the ring of porphyrin and to form unidirectional valence-type electronic ring currents.
孙进
物理学
含时密度泛函高阶谐波光谱诱导电子密度
FTHHGinduced charge density
孙进.Zn-Porphyrin 高阶谐波光谱的研究[EB/OL].(2014-11-24)[2025-08-16].http://www.paper.edu.cn/releasepaper/content/201411-405.点此复制
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