MEASUREMENT OF THE LARGE OPTICAL NONLINEARITY OF NICKEL DITHIOLENE DOPED POLYMERS

被引：12

作者：

WINTER, CS

MANNING, RJ

OLIVER, SN

HILL, CAS

机构：

[1] BT Laboratories, Ipswich, IP5 7RE, Martlesham Heath

来源：

OPTICS COMMUNICATIONS | 1992年 / 90卷 / 1-3期

关键词：

D O I：

10.1016/0030-4018(92)90345-R

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The nonlinear refractive indices and the two-photon absorption coefficients of films of three nickel dithiolene complexes dissolved at various concentrations in a polymethylmethacrylate (PMMA) host were measured using the Z-scan technique. Nonlinear refractive indices up to 10(-8) cm2/kW were observed. The device-based figure of merit. DELTA-n(sat)/alpha-lambda, was found to be greater than 2. At high doping concentrations two-photon absorption increased more rapidly with concentration than the nonlinear refractive index. reducing the ratio of the Re-chi(3) to Im-chi(3) below that acceptable for devices, thus limiting the maximum usable concentration of the guest in a PMMA host.

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页码：139 / 143

页数：5

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