The manipulation of polarized terahertz generation by incommensurate two-color laser pulses with circular polarization

被引：0

作者：

Zhuang, Longzhen ^{[1
]}

Ni, Ming ^{[1
]}

Chen, Xi ^{[1
]}

Wang, Zhaoqiang ^{[1
]}

Lu, Chenhui ^{[1
]}

机构：

[1] Shanghai Univ Engn Sci, Coll Mech & Automot Engn, Shanghai 201620, Peoples R China

来源：

MODERN PHYSICS LETTERS B | 2024年 / 38卷 / 20期

基金：

中国国家自然科学基金;

关键词：

THz generation; polarization control; laser-plasma interaction; incommensurate laser pulse; AIR PLASMA; COHERENT CONTROL; RADIATION; ENHANCEMENT; WAVES;

D O I：

10.1142/S0217984924501859

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We theoretically investigate the polarized terahertz (THz) generation in laser-gas interaction using circularly polarized (CP) two-color laser pulses with uncommon frequencies. We show that these laser pulses can be applied to generate polarized THz radiation, and the polarization of THz radiation, which ranges from linear to circular, can be controlled in a flexible manner by manipulating the laser parameters, such as the relative phase and phase angle. Furthermore, in contrast to traditional harmonic frequency combinations, the polarization states of the incommensurate lasers undergo complex evolution with the phase angle, resulting in a noteworthy influence on the THz yield. The obtained results could deepen our understanding of polarized THz radiation generation.

引用

页数：13

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