Self-focusing of cosh-Gaussian laser beams in a parabolic medium with linear absorption

被引：48

作者：

Patil, S. D. ^{[1
]}

Navare, S. T.

Takale, M. V.

Dongare, M. B.

机构：

[1] Shivaji Univ, Div Nonlinear Opt, Kolhapur 416004, MS, India

来源：

OPTICS AND LASERS IN ENGINEERING | 2009年 / 47卷 / 05期

关键词：

Cosh-Gaussian beams; Parabolic medium; Parabolic wave equation; Self-focusing/defocusing; PROPAGATION;

D O I：

10.1016/j.optlaseng.2008.09.002

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The authors have investigated self-focusing of cosh-Gaussian laser beams in a parabolic medium with linear absorption. The field distribution in the medium is expressed in terms of beam-width parameter f, decentred parameter b and absorption coefficient k(i). The differential equation for f parameter is established by following Wentzel-Kramers-Brillouin (WKB) and paraxial approximations through parabolic wave equation approach and analytical solution is obtained for the same. The behavior of f parameter with the normalized distance of propagation eta is studied at various values of b with different absorption levels in the medium. The results are presented graphically and discussed. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：604 / 606

页数：3

共 27 条

[1] SELF-FOCUSING AND DIFFRACTION OF LIGHT IN A NONLINEAR MEDIUM [J].

AKHMANOV, SA ;

SUKHORUKOV, AP ;

KHOKHLOV, RV .

SOVIET PHYSICS USPEKHI-USSR, 1968, 10 (05) :609-+

[2] Self-guiding light in layered nonlinear media [J].

Bergé, L ;

Mezentsev, VK ;

Rasmussen, JJ ;

Christiansen, PL ;

Gaididei, YB .

OPTICS LETTERS, 2000, 25 (14) :1037-1039

[3]

BOTE SR, 1992, INDIAN J PURE AP PHY, V30, P751

[4] Sinusoidal-Gaussian beams in complex optical systems [J].

Casperson, LW ;

Hall, DG ;

Tovar, AA .

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION, 1997, 14 (12) :3341-3348

[5] SELF-TRAPPING OF OPTICAL BEAMS [J].

CHIAO, RY ;

GARMIRE, E ;

TOWNES, CH .

PHYSICAL REVIEW LETTERS, 1964, 13 (15) :479-&

[6] ELLIPTIC GAUSSIAN-BEAM SELF-FOCUSING IN NONLINEAR MEDIA [J].

CORNOLTI, F ;

LUCCHESI, M ;

ZAMBON, B .

OPTICS COMMUNICATIONS, 1990, 75 (02) :129-135

[7] Average intensity and spreading of cosh-Gaussian laser beams in the turbulent atmosphere [J].

Eyyuboglu, HT ;

Baykal, Y .

APPLIED OPTICS, 2005, 44 (06) :976-983

[8] Analysis of reciprocity of cos-Gaussian and cosh-Gaussian laser beams in a turbulent atmosphere [J].

Eyyuboglu, HT ;

Baykal, Y .

OPTICS EXPRESS, 2004, 12 (20) :4659-4674

[9] Ring formation in self-focusing of electromagnetic beams in plasmas [J].

Faisal, M. ;

Mishra, S. K. ;

Verma, M. P. ;

Sodha, M. S. .

PHYSICS OF PLASMAS, 2007, 14 (10)

[10] Propagation of ellipitic Gaussian laser beam in a higher order non-linear medium [J].

Gill, TS ;

Saini, NS ;

Kaul, SS ;

Singh, A .

OPTIK, 2004, 115 (11) :493-498

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