Terahertz radiation generation from self-focused amplitude modulated gaussian pulse in non-uniform plasma channel

被引：7

作者：

Juneja, Himani ^{[1
]}

Chauhan, Prashant ^{[1
]}

Panwar, Anuraj ^{[1
]}

机构：

[1] Jaypee Inst Informat Technol, Dept Phys & Mat Sci & Engn, Noida, UP, India

来源：

OPTIK | 2022年 / 268卷

关键词：

Self focusing; Amplitude modulated laser beam; Non-uniform plasma channel; Ponderomotive nonlinearity etc;

D O I：

10.1016/j.ijleo.2022.169791

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

This paper presents an analytical investigation of terahertz generation by self-focused amplitude modulated Gaussian laser beam at modulation frequency in non-uniform plasma channel. Due to intensity variations transverse to the propagating laser, a ponderomotive is generated. Attempts have been made to derive ponderomotive force, which generates transient transverse nonlinear current. The analytical expression for beam width parameter and amplitude of THz radiation have been derived. The self-focusing of amplitude modulated Gaussian laser beam in non-uniform channel and its effect on generated THz amplitude have been studied. It is observed that increase in the value of non-uniformity, self-focusing enhances and shifts towards lower value of propagation distance which further enhance the THz amplitude. In this study, we obtained a normalized power of the order of 10-4times the original power supplied by the laser beam by self-focusing the laser beam.

引用

页数：9

共 40 条

[1] Self-focusing and pulse sharpening of sub-picosecond laser pulse in n-InSb [J].

Ahmad, Nafis ;

Alshehri, A. M. ;

Ibrahim, A. .

OPTICS COMMUNICATIONS, 2020, 461

[2] Two color laser self focusing and terahertz generation in multi-ion species plasma [J].

Ahmad, Nafis ;

Mahmoud, Saleh T. ;

Purohit, Gunjan ;

Khan, Firoz .

OPTIK, 2018, 158 :1533-1542

[3] Self-focused amplitude modulated super Gaussian laser beam in plasma and THz radiation with high efficiency [J].

Amouamouha, Mitra ;

Bakhtiari, Farhad ;

Ghafary, Bijan .

RESULTS IN PHYSICS, 2020, 17

[4]

[Anonymous], 2004, P FEL C

[5] High-power terahertz radiation from relativistic electrons [J].

Carr, GL ;

Martin, MC ;

McKinney, WR ;

Jordan, K ;

Neil, GR ;

Williams, GP .

NATURE, 2002, 420 (6912) :153-156

[6] The 2017 terahertz science and technology roadmap [J].

Dhillon, S. S. ;

Vitiello, M. S. ;

Linfield, E. H. ;

Davies, A. G. ;

Hoffmann, Matthias C. ;

Booske, John ;

Paoloni, Claudio ;

Gensch, M. ;

Weightman, P. ;

Williams, G. P. ;

Castro-Camus, E. ;

Cumming, D. R. S. ;

Simoens, F. ;

Escorcia-Carranza, I. ;

Grant, J. ;

Lucyszyn, Stepan ;

Kuwata-Gonokami, Makoto ;

Konishi, Kuniaki ;

Koch, Martin ;

Schmuttenmaer, Charles A. ;

Cocker, Tyler L. ;

Huber, Rupert ;

Markelz, A. G. ;

Taylor, Z. D. ;

Wallace, Vincent P. ;

Zeitler, J. Axel ;

Sibik, Juraj ;

Korter, Timothy M. ;

Ellison, B. ;

Rea, S. ;

Goldsmith, P. ;

Cooper, Ken B. ;

Appleby, Roger ;

Pardo, D. ;

Huggard, P. G. ;

Krozer, V. ;

Shams, Haymen ;

Fice, Martyn ;

Renaud, Cyril ;

Seeds, Alwyn ;

Stoehr, Andreas ;

Naftaly, Mira ;

Ridler, Nick ;

Clarke, Roland ;

Cunningham, John E. ;

Johnston, Michael B. .

JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2017, 50 (04)

[7] Energy-Chirp Compensation in a Laser Wakefield Accelerator [J].

Dopp, A. ;

Thaury, C. ;

Guillaume, E. ;

Massimo, F. ;

Lifschitz, A. ;

Andriyash, I. ;

Goddet, J. -P. ;

Tazfi, A. ;

Phuoc, K. Ta ;

Malka, V. .

PHYSICAL REVIEW LETTERS, 2018, 121 (07)

[8] Efficient generation of THz pulses with 0.4 mJ energy [J].

Fueloep, J. A. ;

Ollmann, Z. ;

Lombosi, Cs. ;

Skrobol, C. ;

Klingebiel, S. ;

Palfalvi, L. ;

Krausz, F. ;

Karsch, S. ;

Hebling, J. .

OPTICS EXPRESS, 2014, 22 (17) :20155-20163

[9] Guiding of relativistic laser pulses by preformed plasma channels [J].

Geddes, CGR ;

Toth, C ;

van Tilborg, J ;

Esarey, E ;

Schroeder, CB ;

Cary, J ;

Leemans, WP .

PHYSICAL REVIEW LETTERS, 2005, 95 (14)

[10] Superradiant and stimulated-superradiant emission of bunched electron beams [J].

Gover, A. ;

Ianconescu, R. ;

Friedman, A. ;

Emma, C. ;

Sudar, N. ;

Musumeci, P. ;

Pellegrini, C. .

REVIEWS OF MODERN PHYSICS, 2019, 91 (03)

← 1 2 3 4 →