检索结果-南通市图书馆

On-chip erbium-doped lithium niobate microcavity laser

在线全文

学校读者我要写书评

暂无评论

引用

Science China(Physics,Mechanics & Astronomy) 2021年第3期64卷 2-6页

作者： YiAn Liu xiongshuo yan JiangWei Wu Bing Zhu YuPing Chen XianFeng Chen State Key Laboratory of Advanced Optical Communication Systems and Networks School of Physics and AstronomyShanghai Jiao Tong UniversityShanghai 200240China

The commercialization of lithium niobate on insulator(LNOI) wafer has resulted in significant on-chip photonic integration application owing to its remarkable photonic,acousto-optic,electro-optic,and piezoelectric *** recent years,a variety of high-performance on-chip LNOI-based photonic devices have been *** this study,we developed a 1-mol% erbium-doped lithium niobate crystal and its LNOI on a silicon substrate and fabricated an erbium-doped LNOI microdisk with high quality factor(~1.05×105).C-band laser emission at ~1530 and ~1560 nm(linewidth 0.12 nm) from the high-Q erbium-doped LNOI microdisk was demonstrated with 974-and 1460-nm pumping,with the latter having better thermal *** microlaser would play an important role in the photonic integrated circuits of the lithium niobate platform.

关键词： erbium-doped lithium niobate on insulator on-chip laser microdisk

On-chip ultraviolet second-harmonic generation in lithium-tantalate thin film microdisk

在线全文

学校读者我要写书评

暂无评论

引用

Chinese Optics Letters 2023年第6期21卷 89-93页

作者：薛苗颜雄硕吴江威葛睿袁汀格陈玉萍陈险峰 State Key Laboratory of Advanced Optical Communication Systems and Networks School of Physics and AstronomyShanghai Jiao Tong UniversityShanghai 200240China Shanghai Research Center for Quantum Sciences Shanghai 201315China Collaborative Innovation Center of Light Manipulations and Applications Shandong Normal UniversityJinan 250358China

The compact and reliable ultraviolet[UV]source has attracted remarkable attention for its potential use in optical measurement systems,high-density optical storage,and biomedical *** demonstrate ultraviolet generation by frequency doubling in a lithium-tantalate-on-insulator[LTOI]microdisk via modal phase *** 50-μm-diameter microdisk was milled by a focused ion beam[FIB]and followed by chemo-mechanical polishing[CMP]to smooth the disk surface and edge,and the Q-factor reaches 2.74×10~5in the visible ***-chip UV coherent light with a wavelength of384.3 nm was achieved,which shows great promise for using LTOIs in integrated ultraviolet source platforms.

关键词： lithium-tantalate thin film ultraviolet light second-harmonic generation

Broadband and lossless lithium niobate valley photonic crystal waveguide [Invited]

在线全文

学校读者我要写书评

暂无评论

引用

Chinese Optics Letters 2021年第6期19卷 72-75页

作者：葛睿颜雄硕陈玉萍陈险峰 State Key Laboratory of Advanced Optical Communication Systems and Networks School of Physics and AstronomyShanghai Jiao Tong UniversityShanghai 200240China

We investigate the influences of structure parameters and interface shapes on the bandwidth of the edge state of lithium niobate valley photonic crystals. By increasing the size difference of two air holes in the same unit cell, we find that the bandwidth of the lossless nontrivial edge state possesses a peak value of 0.0201(a/λ), which can be used to construct broadband valley photonic crystal waveguides. Mode field distributions verify that the waveguide is robust against sharp bends and exhibits chirality. When the unit cell is arranged in a bearded interface with the top and bottom components showing negative and positive valley Chern numbers, respectively, we find that the lithium niobate valley photonic crystal is more likely to exhibit a lossless edge state, which is difficult to be realized in valley waveguides with low refractive index materials. This work can provide guidance on the design of the high-performance topological waveguide.

关键词： lithium niobate valley photonic crystal waveguide propagation loss