sulfur doping
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Author(s):  
Xianjing Li ◽  
Mengdan Zheng ◽  
Haijing Wang ◽  
Yuan Meng ◽  
Duan Wang ◽  
...  


Author(s):  
Xiang Chen ◽  
Zhaojian Qiu ◽  
Hanlu Xing ◽  
Shunxin Fei ◽  
Junzhe Li ◽  
...  


Nanophotonics ◽  
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Li Dong ◽  
Hongwei Chu ◽  
Shiping Xu ◽  
Ying Li ◽  
Shengzhi Zhao ◽  
...  

Abstract Graphitic carbon nitride (g-C3N4) featuring a stable heptazine ring structure and high polymerization degree, was indexed as a high thermochemical stability material, attracting rising research enthusiasm for diverse applications. However, the poor near-infrared (NIR) optical absorption and resulting limited NIR applications were pronounced for g-C3N4 due to its large bandgap of 2.7 eV. In the present work, sulfur-doping was manifested by first-principles calculations to introduce impurity level and result in anisotropic spin splitting in g-C3N4 for enhancing broadband nonlinear optical characteristics in NIR regime. The modified sulfur-doped g-C3N4 (S-C3N4) exhibited the maximum effective nonlinear absorption coefficient to be −0.82 cm/GW. Pulse duration within hundred nanoseconds was realized with high modulation stability employing S-C3N4 as saturable absorber in Q-switching operations. Moreover, broadband ultrafast photonics properties were successfully demonstrated in constructed ytterbium-doped and erbium-doped fiber lasers, generating highly stable dissipative soliton and traditional soliton mode-locking pulses. The presented S-C3N4 nanomaterial with remarkable nonlinear optical performances might explicitly boost the development and application of g-C3N4 materials in advanced optoelectronic and ultrafast photonic devices.



Author(s):  
Yongsheng Yang ◽  
Changxing Wang ◽  
Siyuan Tang ◽  
Da Chen ◽  
Xiameng Li ◽  
...  


2021 ◽  
pp. 133776
Author(s):  
Ting Xiao ◽  
Zhixin Wang ◽  
Tao Jiang ◽  
Yushuai Yao ◽  
Lihua Jiang ◽  
...  




2021 ◽  
Vol MA2021-02 (26) ◽  
pp. 824-824
Author(s):  
Shaoqing Liu ◽  
Jingli Luo




2021 ◽  
pp. 133250
Author(s):  
Ying Yang ◽  
Deli Chen ◽  
Haiyan Wang ◽  
Pengcheng Ye ◽  
Zhentao Ping ◽  
...  


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