Zobrazeno 1 - 10
of 55
pro vyhledávání: '"Yongquan Zeng"'
Autor:
Song Han, Jieyuan Cui, Yunda Chua, Yongquan Zeng, Liangxing Hu, Mingjin Dai, Fakun Wang, Fangyuan Sun, Song Zhu, Lianhe Li, Alexander Giles Davies, Edmund Harold Linfield, Chuan Seng Tan, Yuri Kivshar, Qi Jie Wang
Publikováno v:
Light: Science & Applications, Vol 12, Iss 1, Pp 1-9 (2023)
Abstract One of the most exciting breakthroughs in physics is the concept of topology that was recently introduced to photonics, achieving robust functionalities, as manifested in the recently demonstrated topological lasers. However, so far almost a
Externí odkaz:
https://doaj.org/article/4fc239bb439b4ff5a434ffc1e5bcd748
Autor:
Song Han, Yunda Chua, Yongquan Zeng, Bofeng Zhu, Chongwu Wang, Bo Qiang, Yuhao Jin, Qian Wang, Lianhe Li, Alexander Giles Davies, Edmund Harold Linfield, Yidong Chong, Baile Zhang, Qi Jie Wang
Publikováno v:
Nature Communications, Vol 14, Iss 1, Pp 1-7 (2023)
THz integrate light sources represent an important building blocks for various applications. Here the authors report an electrically driven topological laser based on photonic Majorana zero mode that can convert electricity directly into THz single-m
Externí odkaz:
https://doaj.org/article/c01ba4d5550249b6a00a545177464909
Autor:
Kyungduk Kim, Stefan Bittner, Yuhao Jin, Yongquan Zeng, Stefano Guazzotti, Ortwin Hess, Qi Jie Wang, Hui Cao
Publikováno v:
APL Photonics, Vol 7, Iss 5, Pp 056106-056106-9 (2022)
The ray dynamics of optical cavities exhibits bifurcation points: special geometries at which ray trajectories switch abruptly between stable and unstable. A prominent example is the Fabry–Perot cavity with two planar mirrors, which is widely emplo
Externí odkaz:
https://doaj.org/article/3e89821a913941248deea3ca7e958a28
Publikováno v:
New Journal of Physics, Vol 22, Iss 8, p 083002 (2020)
We present experimental and numerical studies of broad-area semiconductor lasers with chaotic ray dynamics. The emission intensity distributions at the cavity boundaries are measured and compared to ray tracing simulations and numerical calculations
Externí odkaz:
https://doaj.org/article/e0edf495a20245b7b09f656b2e23b412
Lima\c{c}on-shaped microdisk lasers are promising on-chip light sources with low lasing threshold and unidirectional output. We conduct an experimental study on the lasing dynamics of Lima\c{c}on-shaped semiconductor microcavities. The edge emission
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0dba7c2527258ade0889c855a4e88551
http://arxiv.org/abs/2211.00203
http://arxiv.org/abs/2211.00203
Autor:
Kyungduk Kim, Stefan Bittner, Yongquan Zeng, Stefano Guazzotti, Ortwin Hess, Qi Jie Wang, Hui Cao
Publikováno v:
Laser Resonators, Microresonators, and Beam Control XXIV.
Autor:
Kyungduk Kim, Ortwin Hess, Stefan Bittner, Stefano Guazzotti, Hui Cao, Yongquan Zeng, Qi Jie Wang
Publikováno v:
Science
Science, American Association for the Advancement of Science, 2021, 371 (6532), pp.948-952. ⟨10.1126/science.abc2666⟩
Science, American Association for the Advancement of Science, 2021, 371 (6532), pp.948-952. ⟨10.1126/science.abc2666⟩
Laser-based generation of random numbers The security of our digital networks is underpinned by the ability to generate streams of random numbers or bits. As networks expand in an ever-connected way, the challenge is to increase the generation rate o
Autor:
Kyungduk Kim, Stefan Bittner, Yongquan Zeng, Stefano Guazzotti, Ortwin Hess, Qi Jie Wang, Hui Cao
Publikováno v:
Conference on Lasers and Electro-Optics.
We employ spatio-temporal interference of many lasing modes for ultrafast, scalable random number generation. The laser diode with a specially-designed cavity produces hundreds of bitstreams at a total rate of two orders-of-magnitude faster than stat
Autor:
Kyungduk Kim, Stefan Bittner, Yuhao Jin, Yongquan Zeng, Stefano Guazzotti, Ortwin Hess, Qi Jie Wang, Hui Cao
Publikováno v:
Conference on Lasers and Electro-Optics.
We experimentally demonstrate that a slight modification of the Fabry-Perot cavity geometry has a profound impact on lasing performance. The near-planar cavity laser supports hundreds of transverse lasing modes with directional and stable output.
Autor:
Yan Yang, Guoxing Zheng, Shaohua Yu, Liu Zichen, Zhixue He, Jin Tao, Zile Li, Xiao Xi, Qiu Ying, Ming Luo, Yongquan Zeng, You Quan
Publikováno v:
Advanced materials (Deerfield Beach, Fla.). 34(6)
Beam-steering devices, which are at the heart of optical wireless broadcasting communication links, play an important role in data allocation and exchange. An ideal beam-steering device features large steering angles, arbitrary channel numbers, recon