G
Geyang Qu
Researcher at Harbin Institute of Technology
Publications - 15
Citations - 805
Geyang Qu is an academic researcher from Harbin Institute of Technology. The author has contributed to research in topics: Laser & Perovskite (structure). The author has an hindex of 5, co-authored 12 publications receiving 292 citations. Previous affiliations of Geyang Qu include Harbin Institute of Technology Shenzhen Graduate School.
Papers
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Journal ArticleDOI
Ultrafast control of vortex microlasers.
Can Huang,Chen Zhang,Shumin Xiao,Yuhan Wang,Yubin Fan,Yilin Liu,Nan Zhang,Geyang Qu,Hongjun Ji,Jiecai Han,Li Ge,Li Ge,Yuri S. Kivshar,Qinghai Song,Qinghai Song +14 more
TL;DR: The results provide an approach that breaks the long-standing trade-off between low energy consumption and high-speed nanophotonics, introducing vortex microlasers that are switchable at terahertz frequencies.
Journal ArticleDOI
Reprogrammable meta-hologram for optical encryption.
Geyang Qu,Wenhong Yang,Qinghai Song,Qinghai Song,Yilin Liu,Cheng-Wei Qiu,Jiecai Han,Din Ping Tsai,Shumin Xiao,Shumin Xiao +9 more
TL;DR: A re-programmable metasurface that can produce arbitrary holographic images for optical encryption and decrypted and it is hoped that this work paves a more promising way to optical information encryption and authentication.
Journal ArticleDOI
Surface-Emitting Perovskite Random Lasers for Speckle-Free Imaging
Yilin Liu,Wenhong Yang,Shumin Xiao,Shumin Xiao,Nan Zhang,Yubin Fan,Geyang Qu,Qinghai Song,Qinghai Song +8 more
TL;DR: By directly illuminating the patterns with the SERLs, the notable speckle noises of conventional optical images have been dramatically suppressed and this research shall provide a strategy towards the integrated spectral-free imaging systems.
Journal ArticleDOI
Lead halide perovskite vortex microlasers
Wenzhao Sun,Yilin Liu,Geyang Qu,Yubin Fan,Wei Dai,Yuhan Wang,Qinghai Song,Qinghai Song,Jiecai Han,Shumin Xiao,Shumin Xiao +10 more
TL;DR: Experimental demonstrate the perovskite vortex microlasers with highly directional outputs and well−controlled topological charges in hybrid integrated photonic networks, as well as optical computing.
Journal ArticleDOI
Evolution of Photoluminescence, Raman, and Structure of CH 3 NH 3 PbI 3 Perovskite Microwires Under Humidity Exposure
Rubén Segovia,Geyang Qu,Miao Peng,Xiudong Sun,Xiudong Sun,Hongyan Shi,Hongyan Shi,Bo Gao,Bo Gao +8 more
TL;DR: It is believed that the redshift of the MWs PL emission was originated from the structural disorder caused by the incorporation of H2O molecules in the crystal lattice and radiative recombination through moisture-induced subgap trap states.