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3,316 results on '"Qiu, Jianrong"'

352. 光学相干层析成像大纤芯光纤探头的优化研究

Author

Qiu Jianrong, 邱建榕, primary, Yang Chen, 杨晨, additional, Zhang Cheng, 章程, additional, Meng Jia, 孟佳, additional, Han Tao, 韩涛, additional, Qian Huanghe, 钱黄河, additional, Chen Peizhe, 陈沛哲, additional, Yang Lu, 杨璐, additional, Liu Zhiyi, 刘智毅, additional, and Ding Zhihua, 丁志华, additional

Published
2022
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358. ‘Plug-and-play’ plasmonic metafibers for ultrafast fibre lasers

Author

Zhang, Lei, primary, Zhang, Huiru, additional, Tang, Ni, additional, Chen, Xiren, additional, Liu, Fengjiang, additional, Sun, Xiaoyu, additional, Yu, Hongyan, additional, Sun, Xinyu, additional, Jia, Qiannan, additional, Chen, Boqu, additional, Cluzel, Benoit, additional, Grelu, Philippe, additional, Coillet, Aurelien, additional, Qiu, Feng, additional, Ying, Lei, additional, Sha, Wei E. I., additional, Liu, Xiaofeng, additional, Qiu, Jianrong, additional, Zhao, Ding, additional, Yan, Wei, additional, Wu, Duanduan, additional, Shen, Xiang, additional, Wang, Jiyong, additional, and Qiu, Min, additional

Published
2022
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370. Observation of Square-Root Higher-Order Topological States in Photonic Waveguide Arrays

Author

Kang, Juan, Liu, Tao, Yan, Mou, Yang, Dandan, Huang, Xiongjian, Wei, Ruishan, Qiu, Jianrong, Dong, Guoping, Yang, Zhongmin, and Nori, Franco

Subjects
FOS: Physical sciences, Optics (physics.optics), Physics - Optics
Abstract

Recently, high-order topological insulators (HOTIs), accompanied by topologically nontrivial boundary states with codimension larger than one, have been extensively explored because of unconventional bulk-boundary correspondences. As a novel type of HOTIs, very recent works have explored the square-root HOTIs, where the topological nontrivial nature of bulk bands stems from the square of the Hamiltonian. In this paper, we experimentally demonstrate 2D square-root HOTIs in photonic waveguide arrays written in glass using femtosecond laser direct-write techniques. Edge and corner states are clearly observed through visible light spectra. The dynamical evolutions of topological boundary states are experimentally demonstrated, which further verify the existence of in-gap edge and corner states. The robustness of these edge and corner states is revealed by introducing defects and disorders into the bulk structures. Our studies provide an extended platform for realizing light manipulation and stable photonic devices.

Published
2021

371. Defect engineering of inorganic sensitizers for efficient triplet–triplet annihilation upconversion

Author

Gong, Nan, Xu, Beibei, Mo, Junyao, Man, Tao, and Qiu, Jianrong

Abstract

In hybrid triplet–triplet annihilation upconversion (TTA-UC) systems, the triplet state of a molecular acceptor can be sensitized by an inorganic sensitizer at a longer wavelength. The TTA will generate singlet emission at a shorter wavelength, leading to UC.Triplet energy transfer (TET) from inorganic sensitizer to organic acceptor is one of the critical processes to determine the efficiency of TTA-UC.Vacancies, anti-/interstitial-site atoms, extrinsic doping, ligand exchange, and shell coating can generate defects in sensitizers. They can form different depths of traps to influence the distribution, transfer, and recombination process of charges of the sensitizer.Defect engineering by the selective formation of intrinsic traps, external doping-induced traps, and surface states can mediate TET, lower the threshold, and increase UC efficiency.The nature of defects has yet to be fully understood. There need to be more methods to get controllable defects.

Published
2023
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