SYNTHESES OF 2ND-ORDER NONLINEAR-OPTICAL POLYURETHANES FOR ELECTROOPTIC ETALONS

被引:39
作者
WANG, NP
LESLIE, TM
WANG, SP
KOWEL, ST
机构
[1] UNIV ALABAMA,DEPT CHEM,HUNTSVILLE,AL 35899
[2] UNIV ALABAMA,DEPT ELECT & COMP ENGN,HUNTSVILLE,AL 35899
关键词
D O I
10.1021/cm00049a028
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Four polyurethanes containing high-beta NLO chromophores side-chain units have been synthesized and characterized. These polymers have a very high chromophore density and large solubility in normal organic solvents. We have been able to build transmission mode Fabry-Perot etalons using three of the NLO polyurethanes. Etalons using disperse red 19 (DR 19) polymers (polymer 1 and 2) as the optoelectronic spacer layer with a thickness of about 1 mu m show a large modulation efficiency which is comparable to the highest value so far reported for a reflection etalon device with a 4 mu m NLO polymer film. Polymer 3 (DCV-IPDI polyurethane) has been repeatedly poled under a dc electric field as high as 210 V/mu m. Polymer 4, an ionic polymer, experiences dielectric breakdown during parallel plate poling due to the high mobility of the small counterion, BF4-.
引用
收藏
页码:185 / 191
页数:7
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