OPTICAL 2ND-HARMONIC GENERATION IN FERROELECTRIC CHIRAL SMECTIC POLYSILOXANE

被引：10
作者：
OZAKI, M
SAKUTA, M
YOSHINO, K
HELGEE, B
SVENSSON, M
SKARP, K
机构：
[1] CHALMERS UNIV TECHNOL, DEPT POLYMER TECHNOL, S-41296 GOTHENBURG, SWEDEN
[2] CHALMERS UNIV TECHNOL, DEPT PHYS, S-41296 GOTHENBURG, SWEDEN
来源：
APPLIED PHYSICS B-LASERS AND OPTICS | 1994年 / 59卷 / 06期
关键词：
D O I：
10.1007/BF01081180
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The second-order nonlinear optical properties of ferroelectric liquid crystalline polymer have been studied. Angular phase-matched Second-Harmonic Generation (SHG) is observed in the chiral smectic C (SmC*) phase of siloxane copolymer with chiral mesogen in the side chain. The effective nonlinear optical coefficient d(eff) under the phase-matching condition is determined. The intense SHG is observed even in the crystalline phase by cooling down from the SmC* phase under the electric field. The effective coefficient of SHG in the crystalline phase is more than ten times larger than that of the phase-matched SHG in the SmC* phase. The enhancement of SHG in the crystalline phase is observed only in a homeotropically aligned cell and maintained even in the non-biased state for at least several days. The angular dependence of the SHG in the crystalline phase is confirmed.
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页码：601 / 606
页数：6
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