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All-optical nanoscale thermometry with silicon carbide color centers

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Photonics Research 2024年第8期12卷 1696-1702页

作者： CHENGYING LIU HAIBO HU ZHENGTONG LIU SHUMIN XIAO JUNFENG WANG YU ZHOU qinghai song Ministry of Industry and Information Technology Key Laboratory of Micro-Nano Optoelectronic Information System Guangdong Provincial Key Laboratory of Semiconductor Optoelectronic Materials and Intelligent Photonic SystemsHarbin Institute of Technology Pengcheng Laboratory College of Physics Sichuan University Quantum Science Center of Guangdong-Hong Kong-Macao Greater Bay Area Shenzhen-Hong Kong International Science and Technology Park Collaborative Innovation Center of Extreme Optics Shanxi University

All-optical thermometry plays a crucial role in precision temperature measurement across diverse *** defects in solids are one of the most promising sensors due to their excellent sensitivity,stability,and ***,it faces limitations,such as the microwave heating effect and the complexity of spectral *** these challenges,we introduce a novel approach to nanoscale optical thermometry using quantum defects in silicon carbide （SiC）,a material compatible with complementary metal-oxide-semiconductor （CMOS）*** method leverages the intensity ratio between anti-Stokes and Stokes emissions from SiC color centers,overcoming the drawbacks of traditional techniques such as optically detected magnetic resonance（ODMR） and zero-phonon line （ZPL） *** technique provides a real-time,highly sensitive (1.06%K-1),and diffraction-limited temperature sensing protocol,which potentially helps enhance thermal management in the future miniaturization of electronic components.

关键词： Defect center materials Diffraction limit Precision metrology Silicon carbide Single-photon avalanche diodes Spatial resolution

Resonantly enhanced second-and third-harmonic generation in dielectric nonlinear metasurfaces

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Opto-Electronic Advances 2024年第5期7卷 5-19页

作者： Ji Tong Wang Pavel Tonkaev Kirill Koshelev Fangxing Lai Sergey Kruk qinghai song Yuri Kivshar Nicolae C.Panoiu Department of Electronic and Electrical Engineering University College LondonLondon WC1E 7JEUnited Kingdom Nonlinear Physics Center Research School of PhysicsAustralian National UniversityCanberra ACT 2601Australia Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System Guangdong Provincial Key Laboratory of Semiconductor Optoelectronic Materials and Intelligent Photonic SystemsHarbin Institute of TechnologyShenzhen 518055China Wuzhen Laboratory EGO Wuzhen Digital Economy Industrial ParkNo.925 Daole RoadTongxiangChina

Nonlinear dielectric metasurfaces provide a promising approach to control and manipulate frequency conversion optical processes at the nanoscale,thus facilitating both advances in fundamental research and the development of new practical applications in photonics,lasing,and ***,we employ symmetry-broken metasurfaces made of centrosymmetric amorphous silicon for resonantly enhanced second-and third-order nonlinear optical *** the rich physics of optical quasi-bound states in the continuum and guided mode resonances,we comprehensively study through rigorous numerical calculations the relative contribution of surface and bulk effects to second-harmonic generation(SHG)and the bulk contribution to third-harmonic generation(THG) from the ***,we experimentally achieve optical resonances with high quality factors,which greatly boosts light-matter interaction,resulting in about 550 times SHG enhancement and nearly 5000-fold increase of THG.A good agreement between theoretical predictions and experimental measurements is *** gain deeper insights into the physics of the investigated nonlinear optical processes,we further numerically study the relation between nonlinear emission and the structural asymmetry of the metasurface and reveal that the generated harmonic signals arising from linear sharp resonances are highly dependent on the asymmetry of the *** work suggests a fruitful strategy to enhance the harmonic generation and effectively control different orders of harmonics in all-dielectric metasurfaces,enabling the development of efficient active photonic nanodevices.

关键词： second-harmonic generation third-harmonic generation bound state in the continuum guided mode resonance all-dielectric metasurfaces nonlinear optics

Recent progress on structural coloration

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Photonics Insights 2024年第2期3卷 1-30页

作者： Yingjie Li Jingtian Hu Yixuan Zeng qinghai song Cheng-Wei Qiu Shumin Xiao Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System Guangdong Provincial Key Laboratory of Semiconductor Optoelectronic Materials and Intelligent Photonic SystemsHarbin Institute of TechnologyShenzhenChina Pengcheng Laboratory ShenzhenChina Department of Electrical and Computer Engineering National University of SingaporeSingaporeSingapore Collaborative Innovation Center of Extreme Optics Shanxi UniversityTaiyuanChina

Structural coloration generates colors by the interaction between incident light and micro-or nanoscale *** has received tremendous interest for decades,due to advantages including robustness against bleaching and environmentally friendly properties(compared with conventional pigments and dyes).As a versatile coloration strategy,the tuning of structural colors based on micro-and nanoscale photonic structures has been extensively explored and can enable a broad range of applications including displays,anti-counterfeiting,and ***,scholarly research on structural colors has had limited impact on commercial products because of their disadvantages in cost,scalability,and *** this review,we analyze the key challenges and opportunities in the development of structural *** first summarize the fundamental mechanisms and design strategies for structural colors while reviewing the recent progress in realizing dynamic structural *** promising potential applications including optical information processing and displays are also discussed while elucidating the most prominent challenges that prevent them from translating into technologies on the ***,we address the new opportunities that are underexplored by the structural coloration community but can be achieved through multidisciplinary research within the emerging research areas.

关键词： structural coloration metasurfaces nanophotonics

光子学中与连续域束缚态相关的手性现象(特邀)

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光学学报 2024年第10期44卷 171-186页

作者：杜康曾益轩欧阳旭张旭东肖淑敏宋清海哈尔滨工业大学微纳光电信息系统理论与技术工信部重点实验室广东深圳518055 鹏城实验室广东深圳518055

快速发展的超构表面具有较强的光场操控能力,然而要在该平台实现强手性光学效应始终面临挑战。超构表面中的连续域束缚态(BIC)是一类在辐射连续域内被完全束缚的特殊本征态,它不仅具有更强的光场局域能力,还能带来诸多有趣的物理现象,... 详细信息

快速发展的超构表面具有较强的光场操控能力,然而要在该平台实现强手性光学效应始终面临挑战。超构表面中的连续域束缚态(BIC)是一类在辐射连续域内被完全束缚的特殊本征态,它不仅具有更强的光场局域能力,还能带来诸多有趣的物理现象,这为实现最大手性光学响应带来了新的机遇。首先简要回顾了BIC在光子学中的发展过程,随后主要围绕手性BIC的产生及相关特性进行讨论,接着补充介绍了几种与BIC相关的其他光学手性现象,最后针对手性BIC的潜在应用领域和现有挑战进行了总结。光子学中诸多关于手性BIC的最新研究为设计性能卓越的低功耗、小型光电子器件提供了全新的可能途径。

关键词：物理光学连续域束缚态光学手性超构表面对称性动量空间

双光子聚合打印三维光子晶体的研究进展(特邀)

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中国激光 2024年第12期51卷 178-190页

作者：赵晗彤苏思华李琛周明霞张泽政张晨阮琦锋宋清海哈尔滨工业大学(深圳)微纳光电信息系统理论与技术工信部重点实验室广东深圳518055 哈尔滨工业大学(深圳)广东省半导体光电材料与智能光子系统重点实验室广东深圳518055 鹏城实验室广东深圳518055

双光子聚合光刻技术和光子晶体的研究相辅相成。本文首先简述了三维光子晶体的概念及其典型结构以及双光子聚合光刻技术的原理与特点;然后回顾了双光子聚合光刻技术打印三维光子晶体在分辨率、打印速度和材料扩展等方面的研究进展,并重... 详细信息

双光子聚合光刻技术和光子晶体的研究相辅相成。本文首先简述了三维光子晶体的概念及其典型结构以及双光子聚合光刻技术的原理与特点;然后回顾了双光子聚合光刻技术打印三维光子晶体在分辨率、打印速度和材料扩展等方面的研究进展,并重点介绍了三维光子晶体在光学领域的应用情况;最后总结了双光子聚合光刻在制备三维光子晶体方面存在的一些问题,并对其在未来的研究方向进行了展望。

关键词：激光技术 3D打印光子晶体双光子聚合

Intraspecific trait variation of woody species reduced in a savanna community,southwest China

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Plant Diversity 2022年第2期44卷 163-169页

作者： Lubing Liu Jie Yang Min Cao qinghai song CAS Key Laboratory of Tropical Forest Ecology Xishuangbanna Tropical Botanical GardenChinese Academy of SciencesYunnan 666303China University of Chinese Academy of Sciences Beijing 100049China

Plants deploy various ecological strategies in response to environmental *** many forest ecosystems,plants have been reported to have notable inter-and intra-specific trait variation,as well as clear phylogenetic signals,indicating that these species possess a degree of phenotypic plasticity to cope with habitat variation in the *** communities,however,grow in an open canopy structure and exhibit little species diversification,likely as a result of strong environmental *** this study,we hypothesized that the phylogenetic signals of savanna species would be weak,the intraspecific trait variation(ITV)would be low,and the contribution of intraspecific variation to total trait variance would be reduced,owing to low species richness,multiple stresses and relatively homogenous community *** test these hypotheses,we sampled dominant woody species in a dry-hot savanna in southwestern China,focusing on leaf traits related to adaptability of plants to harsh conditions(yearround intense radiation,low soil fertility and seasonal droughts).We found weak phylogenetic signals in leaf traits and low ITV(at both individual and canopy-layer levels).Intraspecific variation(including leaf-,layer-and individual-scales)contributed little to the total trait variance,whereas interspecific variation and variation in leaf phenology explained substantial *** study suggests that intraspecific trait variation is reduced in savanna ***,our findings indicate that classifying species by leaf phenology may help better understand how species coexist under similar habitats with strong stresses.

关键词： Phylogenetic signal Savanna Intraspecific trait variation(ITV) Leaf phenology Coexistence

Hundredfold increase of stimulated Brillouin-scattering bandwidth in whispering-gallery mode resonators

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Photonics Research 2023年第6期11卷 917-924页

作者： GUOPING LIN JINGYI TIAN TANG SUN qinghai song YANNE K.CHEMBO Ministry of Industry and Information Technology Key Laboratory of Micro-Nano Optoelectronic Information System School of ScienceHarbin Institute of TechnologyShenzhen 518055China Guangdong Provincial Key Laboratory of Semiconductor Optoelectronic Materials and Intelligent Photonic Systems Shenzhen 518055China Department of Electrical and Computer Engineering&Institute for Research in Electronics and Applied Physics(IREAP) University of MarylandCollege ParkMaryland 20742USA

Backward stimulated Brillouin scattering(SBS)is widely exploited for various applications in optics and *** typically features a narrow gain bandwidth of a few tens of megahertz in fluoride *** we report a hundredfold increase of SBS bandwidth in whispering-gallery mode *** crystalline orientation results in a large variation of the acoustic phase velocity upon propagation along the periphery,from which a broad Brillouin gain is *** 2.5 GHz wide Brillouin gain profile is theoretically found and experimentally *** phenomena with Brillouin shift frequencies ranging from 11.73 to 14.47 GHz in ultrahigh Q Z-cut magnesium fluoride cavities pumped at the telecommunication wavelength are ***,the Brillouin-Kerr comb in this device is *** 400 comb lines spanning across a spectral window of 120 nm are *** finding paves a new way for tailoring and harnessing the Brillouin gain in crystals.

关键词： scattering pumped Brillouin

Lanthanide-doped nanocrystals in high-Q microtoroids for stable on-chip white-light lasers

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Photonics Research 2022年第7期10卷 1594-1601页

作者： LIMIN JIN ZHUO LIU YUQI ZHANG YUNKAI WU YILIN LIU HUACHUN DENG qinghai song SHUMIN XIAO Ministry of Industry and Information Technology Key Laboratory of Micro-Nano Optoelectronic Information System Harbin Institute of TechnologyShenzhen 518055China Collaborative Innovation Center of Extreme Optics Shanxi UniversityTaiyuan 030006China Pengcheng Laboratory Shenzhen 518055China

The plentiful energy states of lanthanide(Ln^(3+))-doped nanomaterials make them very promising for on-chip integrated white-light *** the rapid progresses,the Ln^(3+)-based white upconversion emissions are strongly restricted by their low upconversion quantum efficiency and the color ***,we combine the CaF_(2):Yb_(35)Tm_(1.5)Er_(0.5)nanocrystals and the high-Q microtoroids,and experimentally demonstrate the chip-integrated stable white-light *** optimizing the sizes,density,and distributions of Ln^(3+)-doped nanocrystals,the Q factors of Ln^(3+)-doped microtoroids are maintained as high as 5×10^(5).The strong light matter interaction in high-Q microtoroids greatly enhances the upconversion emission and dramatically reduces the laser thresholds at 652 nm,545 nm,and 475 nm to similarly low values(1.89-2.10 m J cm^(-2)).Consequently,robust white-light microlaser has been experimentally achieved from a single *** research has paved a solid step toward the chip-scale integrated broadband microlasers.

关键词： stability light Lanthanide

Guiding flow of light with supersymmetry

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Light(Science & Applications) 2022年第10期11卷 2269-2270页

作者： Can Huang qinghai song Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System Harbin Institute of TechnologyShenzhen 518055China Pengcheng Laboratory Shenzhen 518055China Collaborative Innovation Center of Extreme Optics Shanxi UniversityTaiyuanShanxi 030006China

The continuous supersymmetry transformation is applied to the silicon waveguides,and the guidance and conversion of any mode in a wide spectral range are successfully realized in *** proves its great potential in opti... 详细信息

关键词： optical symmetry multiplexing