Relativistic nonlinear propagation of rippled Gaussian laser beam in plasma

被引：3

作者：

Varshney, Meenu Asthana ^{[1
]}

Sen, Sonu ^{[2
]}

Shukla, Shalini ^{[3
]}

Bhargava, Vandana ^{[4
]}

机构：

[1] MB Khalsa Coll, Dept Phys, Indore 452002, Madhya Pradesh, India

[2] Lakshmi Narain Coll Technol, Dept Engn Phys, Indore 453331, Madhya Pradesh, India

[3] Devi Ahilya Univ, Vigyan Bhawan, Sch Phys, Indore 452001, Madhya Pradesh, India

[4] Mewar Univ, Dept Phys, Chittaurgarh 312901, Rajasthan, India

来源：

OPTIK | 2016年 / 127卷 / 03期

关键词：

Relativistic laser-plasma interaction; Nonlinear phenomena; Relativistic self-focusing; Rippled laser beam propagation; SELF-FOCUSING MEDIA; GROWTH; IONIZATION; PULSES; LIGHT;

D O I：

10.1016/j.ijleo.2015.10.231

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

This paper presents an analysis of the relativistic nonlinear propagation of a rippled Gaussian laser beam in plasma. Considering the nonlinearity as arising owing to relativistic variation of mass, and following the WKB and paraxial-ray approximations, the phenomenon of self-focusing of rippled laser beams is studied for arbitrary magnitude of nonlinearity. It is seen that small ripple on the axis of the main beam grows very rapidly with distance of propagation as compared with the self-focusing of the main beam. Based on this analogy, we have analyzed relativistic self-focusing of rippled beams in plasmas. The relativistic intensities with saturation effects of nonlinearity allow the nonlinear refractive index in the paraxial regime to have a slower radial dependence, and thus the ripple extracts relatively less energy from its neighborhood. (c) 2015 Elsevier GmbH. All rights reserved.

引用

页码：1245 / 1250

页数：6

共 24 条

[11] GROWTH-RATE AND DIAMETER OF FILAMENTS IN SELF-FOCUSING MEDIA [J].

KOTHARI, NC ;

KOBAYASHI, T .

PHYSICAL REVIEW LETTERS, 1983, 50 (03) :160-163

[12] Gamma-neutron activation experiments using laser wakefield accelerators [J].

Leemans, WP ;

Rodgers, D ;

Catravas, PE ;

Geddes, CGR ;

Fubiani, G ;

Esarey, E ;

Shadwick, BA ;

Donahue, R ;

Smith, A .

PHYSICS OF PLASMAS, 2001, 8 (05) :2510-2516

[13] Programmable fabrication of spatial structures in a gas jet by laser machining with a spatial light modulator [J].

Lin, M. -W. ;

Chen, Y. -M. ;

Pai, C. -H. ;

Kuo, C. -C. ;

Lee, K. -H. ;

Wang, J. ;

Chen, S. -Y. ;

Lin, J. -Y. .

PHYSICS OF PLASMAS, 2006, 13 (11)

[14] Laser frequency upshift, self-defocusing, and ring formation in tunnel ionizing gases and plasmas [J].

Liu, CS ;

Tripathi, VK .

PHYSICS OF PLASMAS, 2000, 7 (11) :4360-4363

[15] AMPLIFICATION OF 1-NSEC PULSES IN ND-GLASS FOLLOWED BY COMPRESSION TO 1-PSEC [J].

MAINE, P ;

MOUROU, G .

OPTICS LETTERS, 1988, 13 (06) :467-469

[16] EXPERIMENTAL DEMONSTRATION OF RELATIVISTIC SELF-CHANNELING OF A MULTITERAWATT LASER-PULSE IN AN UNDERDENSE PLASMA [J].

MONOT, P ;

AUGUSTE, T ;

GIBBON, P ;

JAKOBER, F ;

MAINFRAY, G ;

DULIEU, A ;

LOUISJACQUET, M ;

MALKA, G ;

MIQUEL, JL .

PHYSICAL REVIEW LETTERS, 1995, 74 (15) :2953-2956

[17] GROWTH OF A SPIKE ON A LASER-BEAM IN A PLASMA [J].

PANDEY, HD ;

TRIPATHI, VK ;

SODHA, MS .

PHYSICS OF FLUIDS B-PLASMA PHYSICS, 1990, 2 (06) :1221-1223

[18] COMPACT 10-TW, 800-FS ND-GLASS LASER [J].

PATTERSON, FG ;

GONZALES, R ;

PERRY, MD .

OPTICS LETTERS, 1991, 16 (14) :1107-1109

[19]

Sodha M.S., 1974, Self-Focusing of Laser Beams in Dielectrics, Plasmas and Semiconmdors

[20] STIMULATED BACKSCATTERED HARMONIC-GENERATION FROM INTENSE LASER INTERACTIONS WITH BEAMS AND PLASMAS [J].

SPRANGLE, P ;

ESAREY, E .

PHYSICAL REVIEW LETTERS, 1991, 67 (15) :2021-2024

← 1 2 3 →