Beam-distortion enhanced terahertz radiation generation in air

被引：1

作者：

Vaicaitis, V. ^{[1
]}

Tamuliene, V. ^{[1
]}

机构：

[1] Vilnius Univ, Laser Res Ctr, Sauletekio 10, LT-10223 Vilnius, Lithuania

来源：

RESULTS IN PHYSICS | 2022年 / 42卷

关键词：

Femtosecond laser; Bichromatic pump; Terahertz radiation; Plasma; WAVE GENERATION; LASER-PULSES; KNIFE-EDGE; PLASMA; EMISSION; FILAMENT; RADIUS;

D O I：

10.1016/j.rinp.2022.105985

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Here we for the first time report an enhancement of terahertz (THz) radiation generation in air by a partial blocking of bichromatic pump beam consisting of the femtosecond Ti:Sapphire laser fundamental and its second harmonic. Both the experimental results and numerical analysis of the generation process demonstrated an increase of THz radiation yield by 15-20 percent over a wide range of the pump power and other experimental parameters. The dominant mechanism of THz radiation generation enhancement was found to be the pump pulse splitting suppression during its propagation in the plasma channel induced by the distorted beam.

引用

页数：6

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