SPIRALING BRIGHT SPATIAL SOLITONS FORMED BY THE BREAKUP OF AN OPTICAL VORTEX IN A SATURABLE SELF-FOCUSING MEDIUM

被引：147

作者：

TIKHONENKO, V

CHRISTOU, J

LUTHERDAVES, B

机构：

[1] Laser Physics Centre, Research School of Physical Sciences and Engineering, Australian National University, Canberra, ACT

来源：

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS | 1995年 / 12卷 / 11期

关键词：

D O I：

10.1364/JOSAB.12.002046

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report the generation of three-dimensional bright spatial solitary waves by the breakup of an optical vortex in a saturable self-focusing nonlinear medium. An elliptical Gaussian beam from a Ti:sapphire laser containing a singly charged on-axis vortex was passed through a nonlinear medium consisting of rubidium vapor at low concentrations. The modulational instability resulted in the formation of a pair of out-of-phase solitonlike beams, which spiraled away from each other during propagation as a result of the repulsive nature of their interaction. The rate of rotation and separation of the two soliton beams could be controlled by the parameters of the medium and the laser intensity. Numerical analysis of the propagation based on a model nonlinearity corresponding to a strongly saturated two-level system showed good quantitative agreement with the experimental data. (C) 1995 Optical Society of America

引用

页码：2046 / 2052

页数：7

共 38 条

[1] EXPERIMENTAL-OBSERVATION OF SPATIAL SOLITON-INTERACTIONS [J].

AITCHISON, JS ;

WEINER, AM ;

SILBERBERG, Y ;

LEAIRD, DE ;

OLIVER, MK ;

JACKEL, JL ;

SMITH, PWE .

OPTICS LETTERS, 1991, 16 (01) :15-17

[2] 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-+

[3] STABILITY OF 3-DIMENSIONAL SELF-TRAPPED BEAMS WITH A DARK SPOT SURROUNDED BY BRIGHT RINGS OF VARYING INTENSITY [J].

ATAI, J ;

CHEN, YJ ;

SOTOCRESPO, JM .

PHYSICAL REVIEW A, 1994, 49 (05) :R3170-R3173

[4] OPTICS OF LIGHT-BEAMS WITH SCREW DISLOCATIONS [J].

BASISTIY, IV ;

BAZHENOV, VY ;

SOSKIN, MS ;

VASNETSOV, MV .

OPTICS COMMUNICATIONS, 1993, 103 (5-6) :422-428

[5] HELICAL-WAVE-FRONT LASER-BEAMS PRODUCED WITH A SPIRAL PHASEPLATE [J].

BEIJERSBERGEN, MW ;

COERWINKEL, RPC ;

KRISTENSEN, M ;

WOERDMAN, JP .

OPTICS COMMUNICATIONS, 1994, 112 (5-6) :321-327

[6] CW SELF-FOCUSING AND SELF-TRAPPING OF LIGHT IN SODIUM VAPOR [J].

BJORKHOL.JE ;

ASHKIN, A .

PHYSICAL REVIEW LETTERS, 1974, 32 (04) :129-132

[7] OPTIMIZATION OF OPTICAL BEAM-STEERING IN NONLINEAR KERR MEDIA BY SPATIAL PHASE MODULATION [J].

CAO, XD ;

MEYERHOFER, DD ;

AGRAWAL, GP .

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS, 1994, 11 (11) :2224-2231

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

CHIAO, RY ;

GARMIRE, E ;

TOWNES, CH .

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

[9]

CLOSE DH, 1989, J OPT SOC AM B, V6, P1317

[10] NONLINEAR PROPAGATION IN KERR MEDIA OF BEAMS WITH UNEQUAL TRANSVERSE WIDTHS [J].

CROSIGNANI, B ;

DIPORTO, P .

OPTICS LETTERS, 1993, 18 (17) :1394-1396

← 1 2 3 4 →