Effect of oxygen pressure on second harmonic generation in zinc oxide thin films deposited by PLD

被引：4
|
作者：
Li Shuhong [1 ]
Liu Yunlong [1 ]
Wang Qingru [1 ]
Shi Qiang [1 ]
He Xiaoxiao [1 ]
Gao Xuexi [1 ]
Zhang Dong [1 ]
Wang Wenjun [1 ]
机构：
[1] Liaocheng Univ, Sch Phys Sci & Informat Technol, Shandong Key Lab Opt Commun Sci & Technol, Liaocheng 252059, Shandong, Peoples R China
来源：
OPTICS COMMUNICATIONS | 2015年 / 356卷
基金：
中国国家自然科学基金;
关键词：
Second-harmonic generation (SHG); Pulsed laser deposition (PLD); ZnO; Oxygen pressure; NONLINEAR-OPTICAL PROPERTIES; ZNO; TEMPERATURE; EPITAXY; GROWTH;
D O I：
10.1016/j.optcom.2015.08.051
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Nanocrystalline ZnO thin films with c-axis preferred orientation were deposited on glass substrate at different oxygen pressures by a pulsed laser deposition (PLD) method. The microstructures and linear optical properties of the films are investigated by X-ray diffractometry and spectroscopic ellipsometry, respectively. Second harmonic generation in the films is studied using the rotational Maker fringe technique in the transmission scheme. All the ZnO films show second-order nonlinearity and the largest effective nonlinear coefficient d(33), which increases with the grain size, is obtained in samples deposited at the oxygen pressure of 2 x 10(-2) Pa. The effects of the oxygen pressure on the microstructure, macrostress and second-order optical nonlinearity are analyzed. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：546 / 550
页数：5
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