Emission of conical THz radiation induced by bichromatic pump X waves in an air plasma

被引：2

作者：

Buozius, D. ^{[1
]}

Motiejunas, B. ^{[1
]}

Vaicaitis, V. ^{[1
]}

Tamuliene, V ^{[1
]}

机构：

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

来源：

PHYSICAL REVIEW A | 2022年 / 105卷 / 02期

关键词：

PULSES;

D O I：

10.1103/PhysRevA.105.023521

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The X-wave formation during the propagation of bichromatic femtosecond laser pulses in an air plasma filament and THz radiation generation has been investigated both experimentally and theoretically. We found that in this case the pump waves as well as THz radiation propagate as X waves at the same group velocity. Therefore, the cone angle of generated THz radiation could be estimated using the X-wave dispersion law. Hence, the proposed model allows an alternative characterization of generated THz radiation based on the frequency-angular spectra of pump waves registered after propagation in the created plasma filament.

引用

页数：6

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