The effects of different interfacial environments on the optical nonlinearity of nanometer-sized CdO organosol

被引：30

作者：

Wu, XC ^{[1
]}

Wang, RY ^{[1
]}

Zou, BS ^{[1
]}

Wu, PF ^{[1
]}

Wang, L ^{[1
]}

Xu, JR ^{[1
]}

Huang, W ^{[1
]}

机构：

[1] NATL UNIV SINGAPORE,INST MAT RES & ENGN,SINGAPORE 119260,SINGAPORE

来源：

APPLIED PHYSICS LETTERS | 1997年 / 71卷 / 15期

关键词：

D O I：

10.1063/1.120424

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The third-order optical nonlinearity chi((3)) of nanometer-sized CdO with different interfacial environments has been measured using the Z-scan technique. The real and imaginary parts of chi(3) at 800 nm have been determined to be: -1.55 x 10(-16) m(2)/W and 0.91 cm/GW for CdO-CTAB (cetyltrimethyl ammonium bromide) organosol, and -6.97x10(-16) m(2)/W and 8.64 cm/GW for CdO-DBS (dodecylbenzene sulfonate) organosol. Origins of the optical nonlinearity and the effects of the interfacial conditions have been discussed. The optical Stark effect (OSE) and surface trapped states are the possible origins of the observed optical nonlinearity. The possible enhancement of optical nonlinearity of nanoparticles by intentional interfacial modification is suggested. (C) 1997 American Institute of Physics.

引用

页码：2097 / 2099

页数：3

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