SiOxC1-xN large-sized nanocrystals in the photoinduced SHG

被引：15

作者：

Rodriguez, A ^{[1
]}

机构：

[1] Res Technol Elect Ctr DGR, RA-345546 Buenos Aires, DF, Argentina

来源：

OPTICAL MATERIALS | 2002年 / 19卷 / 02期

关键词：

D O I：

10.1016/S0925-3467(01)00189-6

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Photoinduced second harmonic generation (SHG) has been revealed in SiOCN nanocrystallites incorporated into the oligoetheracrylate photopolymers. Increasing photoinducing Q-switched nitrogen laser pulses (lambda = 337 nm) leads to an increase of the SHG signal. The SHG achieves its maximum at pump photon flux of about 1.83 GW/cm(2). The maximum photoinduced SHG is achieved for C/N ratio of about 0.92 and is equal to (3.82 +/- 0.11) pm/V. Optimal concentration of the embedded SiOCN nanopowders lies between 4.2% and 6.3%. Decreasing temperature favours increase of the SHG. Substantial contribution of nanocrystallite interfaces is expected in observed nonlinear optical phenomena, (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：269 / 274

页数：6

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