Multiphoton Upconversion Emission from Diamond Single Crystals

被引：11
|
作者：
Wang, Yunfeng [1 ]
Zhang, Wenfei [2 ]
Lin, Chao-Nan [3 ]
Ren, Pengpeng [2 ]
Lu, Ying-Jie [3 ]
Shan, Chongxin [3 ]
Yu, Siu Fung [1 ]
机构：
[1] Hong Kong Polytech Univ, Dept Appl Phys, Hong Kong, Hong Kong, Peoples R China
[2] Shenzhen Univ, Coll Optoelect Engn, Shenzhen Key Lab Laser Engn, Shenzhen 518060, Peoples R China
[3] Zhengzhou Univ, Sch Phys & Engn, Zhengzhou 450052, Peoples R China
来源：
ACS APPLIED MATERIALS & INTERFACES | 2018年 / 10卷 / 22期
关键词：
diamond single crystals; upconversion emission; nonlinear optical absorption; photoluminescence; nonlinear optics; CHEMICAL-VAPOR-DEPOSITION; CVD-DIAMOND; NANOCRYSTALLINE DIAMOND; 3-PHOTON ABSORPTION; 5-PHOTON ABSORPTION; 2-PHOTON ABSORPTION; OPTICAL-PROPERTIES; SYNTHETIC DIAMOND; INDIRECT EXCITONS; LUMINESCENCE;
D O I：
10.1021/acsami.8b07288
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Room-temperature upconversion emission up to eight-photon absorption is demonstrated from diamond single crystals under femtosecond laser excitation for the first time. The low concentration of defects and impurities is attributed to the support of free excitons emission at 235 nm. Nonlinear optical properties are also investigated by using an open-aperture Z-scan technique. The corresponding three-, five-, and eight-photon absorption coefficients of the diamonds are found to be 1.8 x 10(-2) cm(3)/GW(2), 5 x 10(-9) cm(7)/GW(4), and 1.6 x 10(-19) cm(13)/GW(7), respectively. Considering its high hardness and high thermal conductivity, diamonds are a versatile nonlinear optical material suitable for high-power deep ultraviolet applications under multiphoton excitation.
引用
收藏
页码：18935 / 18941
页数：7
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