ELECTRONIC NONLINEAR-OPTICAL BEHAVIOR OF A GRATING-COUPLED POLYMER 4BCMU WAVE-GUIDE

被引：4

作者：

CROOK, RJ ^{[1
]}

COTTER, NPK ^{[1
]}

SAMBLES, JR ^{[1
]}

RANGELROJO, R ^{[1
]}

SPRUCE, G ^{[1
]}

WHERRETT, BS ^{[1
]}

机构：

[1] HERIOT WATT UNIV,DEPT PHYS,EDINBURGH EH14 4AS,MIDLOTHIAN,SCOTLAND

来源：

OPTICS COMMUNICATIONS | 1994年 / 113卷 / 1-3期

关键词：

D O I：

10.1016/0030-4018(94)90621-1

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The electronic chi((3)) nonlinear optical behaviour of blue, thermally evaporated P4BCMU has been investigated at lambda = 1.064 mu m using TM-polarized grating coupled guided-wave techniques. The analysis involves a rigorous treatment of the electromagnetic fields in the vicinity of the grating and a theoretically generated fit to the nonlinear reflectivity response which yields both the rear and the imaginary components of chi((3)) in a single experiment. The values obtained are Re(chi((3))) = -1.3 +/- 0.4) x 10(-10) esu and Im(chi((3))) = (2.1 +/- 0.6) x 10(-10) esu. Considerable care has been taken to establish the electronic origin of the effect. The results show a significant increase in two-photon absorption relative to red spun films of the same polymer at 1.064 mu m.

引用

页码：344 / 352

页数：9

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