Longitudinal extra torque in liquid crystals due to the optical beam shape

被引：4
|
作者：
Marrucci, L
Piccirillo, B
Vetrano, F
Santamato, E
机构：
[1] Univ Naples Federico II, I-80126 Naples, Italy
[2] Ist Nazl Fis Mat, Dipartimento Sci Fis, I-80126 Naples, Italy
来源：
JOURNAL OF OPTICS A-PURE AND APPLIED OPTICS | 2000年 / 2卷 / 04期
关键词：
nematic liquid crystals; homeotropical alignment; nonlinear optics; molecular reorientation;
D O I：
10.1088/1464-4258/2/4/309
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Optical reorientation in nematic liquid crystals turns out to depend not only on the intensity and polarization of the pumping laser beam, but also on the shape of the transverse cross-section. A longitudinal extra torque acting on the molecular director appears whenever the beam cross-section shape breaks the system cylindrical symmetry.
引用
收藏
页码：294 / 298
页数：5
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