Non-linear optical characteristics of novel porphyrin dye media

被引：21

作者：

McEwan, KJ ^{[1
]}

Robertson, JM ^{[1
]}

Wylie, AP ^{[1
]}

Anderson, HL ^{[1
]}

机构：

[1] Def Res Agcy, Malvern WR14 3PS, Worcs, England

来源：

MATERIALS FOR OPTICAL LIMITING II | 1997年 / 479卷

关键词：

D O I：

10.1557/PROC-479-29

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Measurements of sensitive RSA phenonema in new porphyrin dyes are presented. Both the linear and non-linear optical properties are shown to depend strongly on the molecular structure. A detailed analysis of two of the porphyrins reveals that inter-systems crossing rate and the excited state absorption profile are strongly influenced by substitution of a heavy atom into the central atom position. It is shown that by appropriate choice of wavelength values in excess of 30 can be achieved for the material parameter sigma(ex)/sigma(gr). This value compares well with previously reported results and is achieved in conjunction with excited state lifetimes on the order of 300 ns.

引用

页码：29 / 40

页数：12