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Exciton polaritons based on planar dielectric Si asymmetric nanogratings coupled with J-aggregated dyes film

Frontiers of Optoelectronics 2020年第1期13卷 4-11页

作者： Zhen CHAI Xiaoyong HU Qihuang GONG State Key Laboratory for Mesoscopic Physics&Department of Physics Collaborative Innovation Center of Quantum MatterBeijing Academy of Quantum Information SciencesNano-optoelectronics Frontier Center of Ministry of EducationPeking UniversityBeijing 100871China Collaborative Innovation Center of Extreme Optics Shanxi UniversityTaiyuan 030006China

Optical cavity polaritons,originated from strong coupling between the excitons in materials and photons in the confined cavities field,have recently emerged as their applications in the high-speed lowpower polaritons devices,low-threshold lasing and so ***,the traditional exciton polaritons based on metal plasmonic structures or Fabry-Perot cavities suffer from the disadvantages of large intrinsic losses or hard to integrate and *** greatly limits the applications of exciton ***,here we implement a compact low-loss dielectric photonic–organic nanostructure by placing a 2-nm-thick PVA doped with TDBC film on top of a planar Si asymmetric nanogratings to reveal the exciton polaritons *** find a distinct anti-crossing dispersion behavior appears with a 117.16 meV Rabi splitting when varying the period of Si *** dispersion and mode anti-crossing behaviors are also observed when considering the independence of the height of Si,width of Si nanowire B,and distance between the two Si nanowires in one *** work offers an opportunity to realize low-loss novel polaritons applications.

关键词： exciton polaritons dielectric Si asymmetric nanogratings TDBC J-aggregated dyes film

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In the Heart of Femtosecond Laser Induced nanogratings: From Porous Nanoplanes to Form Birefringence

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World Journal of Nano Science and Engineering 2015年第4期5卷 115-125页

作者： R. Desmarchelier B. Poumellec F. Brisset S. Mazerat M. Lancry ICMMO UMR CNRS-UPSud 8182 Université Paris Sud (in Université Paris Saclay) Orsay France

It is demonstrated that the form birefringence related to the so-called nanogratings is quantitatively correlated to the porosity-filling factor of these nanostructures. We reveal that matters surrounding the nanopores exhibit significant refractive index decrease which is likely due to the fictive temperature increase and/or the presence of a significant amount of interstitial O2. The control of the porosity was achieved by adjusting the laser pulse energy and the number of pulses/micron i.e. the overlapping rate. Applications can be numerous in fast material processing by the production of nanoporous matter, and photonics by changing the optical properties.

关键词： Silica Glasses Nanoporous Femtosecond Laser Processing Birefringence nanogratings

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A high figure of merit localized surface plasmon sensor based on a gold nanograting on the top of a gold planar film

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Chinese Physics B 2013年第10期22卷 345-348页

作者：张祖银王立娜胡海峰李康文马勋鹏宋国峰 Laboratory of Nano-Optoelectronics Institute of SemiconductorsChinese Academy of Sciences

We investigate the sensitivity and figure of merit （FOM） of a localized surface plasmon （LSP） sensor with gold nanograting on the top of planar metallic film. The sensitivity of the localized surface plasmon sensor is 317 nm/RIU, and the FOM is predicted to be above 8, which is very high for a localized surface plasmon sensor. By employing the rigorous coupled-wave analysis （RCWA） method, we analyze the distribution of the magnetic field and find that the sensing property of our proposed system is attributed to the interactions between the localized surface plasmon around the gold nanostrips and the surface plasmon polarition on the surface of the gold planar metallic film. These findings are important for developing high FOM localized surface plasmon sensors.

关键词： localized surface plasmon biosensor figure of merit nanogratings gold film

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Decoding the future:opportunities and challenges in next-generation optical data storage[Invited]

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Chinese Optics Letters 2023年第12期21卷 38-53页

作者：颜志胡景淇肖哲翔谢大乐曹强甘棕松张静宇 Wuhan National Laboratory for Optoelectronics Huazhong University of Science and TechnologyWuhan 430074China

The ongoing quest for higher data storage density has led to a plethora of innovations in the field of optical data *** review paper provides a comprehensive overview of recent advancements in next-generation optical data storage,offering insights into various technological *** pay particular attention to multidimensional and superresolution approaches,each of which uniquely addresses the challenge of dense *** multidimensional approach exploits multiple parameters of light,allowing for the storage of multiple bits of information within a single voxel while still adhering to diffraction ***,superresolution approaches leverage the photoexcitation and photoinhibition properties of materials to create diffraction-unlimited data *** conclude by summarizing the immense opportunities these approaches present,while also outlining the formidable challenges they face in the transition to industrial applications.

关键词： optical data storage multidimensional data storage nanogratings superresolution data storage

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