J
Jijun He
Researcher at École Polytechnique Fédérale de Lausanne
Publications - 64
Citations - 2092
Jijun He is an academic researcher from École Polytechnique Fédérale de Lausanne. The author has contributed to research in topics: Photonics & Laser. The author has an hindex of 15, co-authored 53 publications receiving 994 citations. Previous affiliations of Jijun He include École Polytechnique & Hong Kong Polytechnic University.
Papers
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Journal ArticleDOI
Integrated turnkey soliton microcombs
Boqiang Shen,Lin Chang,Junqiu Liu,Heming Wang,Qi-Fan Yang,Chao Xiang,Rui Ning Wang,Jijun He,Tianyi Liu,Weiqiang Xie,Joel Guo,David Kinghorn,Lue Wu,Qing-Xin Ji,Qing-Xin Ji,Tobias J. Kippenberg,Kerry J. Vahala,John E. Bowers +17 more
TL;DR: In this article, a turnkey regime for soliton microcombs is demonstrated, in which solitons are generated by switching on a co-integrated pump laser, eliminating the need for photonic and electronic control circuitry.
Journal ArticleDOI
Integrated turnkey soliton microcombs operated at CMOS frequencies
Boqiang Shen,Lin Chang,Junqiu Liu,Heming Wang,Qi-Fan Yang,Chao Xiang,Rui Ning Wang,Jijun He,Tianyi Liu,Weiqiang Xie,Joel Guo,Dave Kinghorn,Lue Wu,Qing-Xin Ji,Tobias J. Kippenberg,Kerry J. Vahala,John E. Bowers +16 more
TL;DR: A turnkey regime for soliton microcombs is demonstrated, in which solitons are generated by switching on a co-integrated pump laser, eliminating the need for photonic and electronic control circuitry.
Journal ArticleDOI
Photonic microwave generation in the X- and K-band using integrated soliton microcombs
Junqiu Liu,Erwan Lucas,Arslan S. Raja,Jijun He,Jijun He,Johann Riemensberger,Rui Ning Wang,Maxim Karpov,Hairun Guo,Hairun Guo,Romain Bouchand,Tobias J. Kippenberg +11 more
TL;DR: In this article, a low-noise nano-microwave generator was demonstrated in two widely employed microwave bands, the X-band and the K-band, driven by a lownoise fiber laser.
Journal ArticleDOI
Nanophotonic soliton-based microwave synthesizers
Junqiu Liu,Erwan Lucas,Arslan S. Raja,Jijun He,Johann Riemensberger,Rui Ning Wang,Maxim Karpov,Hairun Guo,Romain Bouchand,Tobias J. Kippenberg +9 more
TL;DR: In this paper, the authors demonstrate integrated soliton microcombs operating in two widely employed microwave bands, X- and K-band, at power levels compatible with silicon-based lasers (<150 mW).
Journal ArticleDOI
Plasmonic enhancement and polarization dependence of nonlinear upconversion emissions from single gold nanorod@SiO2@CaF2:Yb3+,Er3+ hybrid core-shell-satellite nanostructures.
Jijun He,Wei Zheng,Filip Ligmajer,Chi Fai Chan,Zhiyong Bao,Ka-Leung Wong,Xueyuan Chen,Jianhua Hao,Jiyan Dai,Siu Fung Yu,Dangyuan Lei +10 more
TL;DR: The hybrid plasmonic UC nanostructures with an optimal shell thickness exhibit an improved bioimaging performance compared with bare UCNCs, and a polarized nature of the light at both UC emission bands is observed, which stems from the relationship between the excitation polarization and GNR orientation.