STRONG SELF-FOCUSING IN NEMATIC LIQUID-CRYSTALS

被引：115

作者：

BRAUN, E ^{[1
]}

FAUCHEUX, LP ^{[1
]}

LIBCHABER, A ^{[1
]}

机构：

[1] NEC RES INST, PRINCETON, NJ 08540 USA

来源：

PHYSICAL REVIEW A | 1993年 / 48卷 / 01期

关键词：

D O I：

10.1103/PhysRevA.48.611

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present an experimental study of strong self-focusing in nematic liquid crystals. In a planar geometry, a linear dependence of the focal power on the input intensity for 100-mum-thick samples turns into an exponential one when thicker samples are used. A transverse visualization of the beam structure is performed in a cylindrical geometry. We observe an undulation and a filamentary structure of the laser beam for large intensities. Also, multiple focal points appear along the beam axis in this configuration. Undulation and filamentation of the beam are also observed in a spherical geometry.

引用

页码：611 / 622

页数：12

共 32 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]

AKHMANOV SA, 1972, LASER HDB

[3]

ARECCHI FT, 1987, INSTABILITIES CHAOS

[4] THEORETICAL AND EXPERIMENTAL STUDIES OF PROPAGATION OF BEAMS THROUGH A FINITE-SAMPLE OF A CUBICALLY NONLINEAR MATERIAL [J].

BANERJEE, PP ;

MISRA, RM ;

MAGHRAOUI, M .

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS, 1991, 8 (05) :1072-1080

[5]

BESPALOV VI, 1966, JETP LETT-USSR, V3, P307

[6]

BRAUN E, UNPUB

[7] PERIODIC BREAKUP OF OPTICAL BEAMS DUE TO SELF-FOCUSING [J].

CAMPILLO, AJ ;

SHAPIRO, SL ;

SUYDAM, BR .

APPLIED PHYSICS LETTERS, 1973, 23 (11) :628-630

[8] RELATIONSHIP OF SELF-FOCUSING TO SPATIAL INSTABILITY MODES [J].

CAMPILLO, AJ ;

SHAPIRO, SL ;

SUYDAM, BR .

APPLIED PHYSICS LETTERS, 1974, 24 (04) :178-180

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

CHIAO, RY ;

GARMIRE, E ;

TOWNES, CH .

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

[10]

DEGENNES PG, 1974, PHYSICS LIQUID CRYST

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