Enhanced photoluminescence intensity by modifying the surface nanostructure of Nd3+-doped (Pb, La)(Zr, Ti)O3 ceramics

被引：7
|
作者：
Xu, Long [1 ]
Zhang, Jingwen [2 ]
Zhao, Hua [2 ]
Sun, Haibin [3 ]
Xu, Caixia [2 ]
机构：
[1] Southwest Univ, Sch Phys Sci & Technol, Chongqing 400715, Peoples R China
[2] Harbin Inst Technol, Dept Phys, Inst Modern Opt, Harbin 150001, Heilongjiang, Peoples R China
[3] Chinese Acad Sci, Key Lab Infrared Detect & Imaging Technol, Shanghai Inst Tech Phys, Shanghai 200083, Peoples R China
来源：
OPTICS LETTERS | 2017年 / 42卷 / 17期
基金：
中国国家自然科学基金;
关键词：
UP-CONVERSION; LASING EMISSION; RANDOM LASER; ND3+; NANOPARTICLES; LOCALIZATION; NANOCRYSTALS; GROWTH; ARRAYS; LIGHT;
D O I：
10.1364/OL.42.003303
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Quasi-period cylindrical nanostructures with both diameters and intervals of about 100 nm are manufactured on the surfaces of Nd3+-doped lanthanum lead zirconate titanate ceramics by femtosecond laser irradiation under SF6 atmosphere. A light-emission enhancement of more than 20 times is investigated, accompanied by an extremely long trailing-off time of light emission and lower threshold. A specific polarization state of the light emission is achieved and tuned by changing the incident regions of the pumping source. The increased absorption coefficient of the specimen is discussed based on multiple scattering and weak localization of light. In addition, both the scatterers provided by the laser-machined nanostructure and the recurrent photoinduced trapping and re-excitation process participated in the enhancement of the light emission. This Letter offers new insight to improve the luminescence property of laser materials, as well as to broaden the range of exploring the weak localization of light and random lasers. (C) 2017 Optical Society of America
引用
收藏
页码：3303 / 3306
页数：4
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