Journal of Nanophotonics最新文献_第8页

Parallel computing for modeling multilayer photonic crystals 多层光子晶体建模的并行计算

IF 1.5 4区物理与天体物理

Journal of Nanophotonics Pub Date : 2023-01-01 DOI: 10.1117/1.JNP.17.016007

A. Richardson, Shavaiz I. Mir, S. Morris, S. Elston, A. Yetisen, Y. Montelongo

引用次数: 0

Optimally designed tunable phase change material-based narrowband perfect absorber 基于可调谐相变材料的窄带完美吸收体的优化设计

IF 1.5 4区物理与天体物理

Journal of Nanophotonics Pub Date : 2023-01-01 DOI: 10.1117/1.JNP.17.016004

D. Tripathi, R. Hegde

{"title":"Optimally designed tunable phase change material-based narrowband perfect absorber","authors":"D. Tripathi, R. Hegde","doi":"10.1117/1.JNP.17.016004","DOIUrl":"https://doi.org/10.1117/1.JNP.17.016004","url":null,"abstract":"Abstract. In recent years, there has been a growing interest in active metasurfaces. In particular, phase change material-based metasurfaces offering all-optical reconfigurability are being explored. Despite recent progress, further improvement in device reconfiguration energies and optical contrast achievable between the amorphous and crystalline states is desirable. In this work, we demonstrate that using a mirror-backed chalcogenide-based narrowband perfect absorber metasurface can significantly improve the device’s reflection contrast at much lower energies than its mirrorless case. By considering a GST225 metasurface operating in the near IR, our systematic numerical study finds improved reflection contrast (up to −32 dB, Q-factor 19.22 compared with 9.59 dB, Q-factor 11 for the mirrorless case). For the mirrored case, the thermal study finds faster crystallization (up to 6 times) at reduced reconfiguration thresholds (72 times lower) compared with the mirrorless case. This results in a more than 2 orders of magnitude higher device figure of merit [defined as the change in reflection contrast (in dB) to a corresponding change in optical energy (in nJ)] compared with the mirrorless case. The results are promising for high-performance metasurfaces at reduced switching energies.","PeriodicalId":16449,"journal":{"name":"Journal of Nanophotonics","volume":"17 1","pages":"016004 - 016004"},"PeriodicalIF":1.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42540233","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Nonreciprocal optical properties of magneto-optical film doped with metal particles based on the effective medium theory 基于有效介质理论的金属颗粒掺杂磁光薄膜的非互易光学特性

IF 1.5 4区物理与天体物理

Journal of Nanophotonics Pub Date : 2023-01-01 DOI: 10.1117/1.JNP.17.016001

Jianfei Han, Kaifeng Wei, Han Wang

{"title":"Nonreciprocal optical properties of magneto-optical film doped with metal particles based on the effective medium theory","authors":"Jianfei Han, Kaifeng Wei, Han Wang","doi":"10.1117/1.JNP.17.016001","DOIUrl":"https://doi.org/10.1117/1.JNP.17.016001","url":null,"abstract":"Abstract. In search of next-generation optical information functional materials, magneto-optical microstructures have attracted great attention since they can break Kirchhoff’s law and produce higher photoelectric conversion efficiency. Theoretical studies using finite-difference time-domain and transfer matrix methods have been performed to investigate the optical properties of magneto-optical microstructures. However, these methods are computationally intensive and require periodic conditions, which may not be satisfied with most fabricated samples. The equivalent medium algorithm is improved to make it suitable for the equivalent of magneto-optical materials. Based on the improved equivalent medium theory (EMT), a magneto-optical InSb film structure doped with Au particles (D-InSb) is designed. The effective dielectric functions of the D-InSb layer for transfer matrix waves are obtained from the Bruggeman approximation. Thin-film optics formulas incorporating the anisotropic wave propagation in uniaxial media are employed to calculate the nonreciprocal absorptance of the D-InSb film. The effect of geometric parameters, such as filling ratio and number of layers, is investigated. In addition to modeling the directional radiative properties at various angles of incidence, the hemispherical properties are also calculated to understand the light absorption. The results of our study can provide methods and ideas for the design of solar cells, infrared absorbers, and optical isolators.","PeriodicalId":16449,"journal":{"name":"Journal of Nanophotonics","volume":"17 1","pages":"016001 - 016001"},"PeriodicalIF":1.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43559125","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Single microhole per pixel for thin Ge-on-Si complementary metal-oxide semiconductor image sensor with enhanced sensitivity up to 1700 nm 单微孔每像素薄锗硅互补金属氧化物半导体图像传感器与增强灵敏度高达1700纳米

IF 1.5 4区物理与天体物理

Journal of Nanophotonics Pub Date : 2023-01-01 DOI: 10.1117/1.JNP.17.016012

E. Ponizovskaya-Devine, A. Mayet, Amita Rawat, Ahasan Ahamed, Shih-Yuan Wang, A. Elrefaie, Toshishige Yamada, M. Saif Islam

引用次数: 2

Numerical investigation of graphene-silica-silver based VLSI interconnects with tunable multiband infrared absorber for 3D integrated circuits 三维集成电路中可调谐多波段红外吸收器的石墨烯-硅-银VLSI互连的数值研究

IF 1.5 4区物理与天体物理

Journal of Nanophotonics Pub Date : 2023-01-01 DOI: 10.1117/1.JNP.17.016008

Sivakumar Sabapathy Arumugam

{"title":"Numerical investigation of graphene-silica-silver based VLSI interconnects with tunable multiband infrared absorber for 3D integrated circuits","authors":"Sivakumar Sabapathy Arumugam","doi":"10.1117/1.JNP.17.016008","DOIUrl":"https://doi.org/10.1117/1.JNP.17.016008","url":null,"abstract":"Abstract. We propose the multilayer silver-silica-graphene-based very large-scale integration interconnects assisted by a tunable perfect absorption structure over the infrared frequency spectrum of the third window of the optical communication for three-dimensional (3D) integrated circuits (ICs). This absorber is numerically investigated for the different cylindrical silver resonator-based squared geometries. The overall structure is investigated for the wavelength range of 1.4 to 1.6 μm over the infrared spectrum. The adjustable behavior of the absorption spectrum is observed when this structure is studied for various chemical potentials of the graphene sheet. We also present the electric and magnetic field intensity for the nearly perfect absorption conditions to identify the effect of energy concentration over different pixel structures and wavelengths. We also showcased the possible fabrication process for the proposed numerical investigation analysis. Resonator height and width have also been simulated numerically to find the resonance shift in the absorber. The adaptable behavior of the suggested structure has potential applications in a wide range of scientific fields, including biosensors, solar absorbers, optical communication, and the fabrication of 3D ICs. Simulations are performed using the COMSOL Multiphysics software module","PeriodicalId":16449,"journal":{"name":"Journal of Nanophotonics","volume":"17 1","pages":"016008 - 016008"},"PeriodicalIF":1.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44538912","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Assessment of Bloch surface wave-based one-dimensional photonic crystal sensor using ultraviolet range 紫外波段布洛赫表面波一维光子晶体传感器的评价

IF 1.5 4区物理与天体物理

Journal of Nanophotonics Pub Date : 2023-01-01 DOI: 10.1117/1.JNP.17.016009

K. Sagar, Ajay Kumar

引用次数: 1

Germanium and silicon-based nanohole LWIR metalens design and fabrication 锗基和硅基纳米孔LWIR超构透镜的设计与制造

IF 1.5 4区物理与天体物理

Journal of Nanophotonics Pub Date : 2023-01-01 DOI: 10.1117/1.JNP.17.016006

Nazmi Yilmaz, Halil Can Nalbant, Fatih Balli, Arda Eren, Tolga Yelboğa, Ahmet Sözak

引用次数: 0

Ultra-compact silicon multimode waveguide bends based on special curves for dual polarizations 超紧凑硅多模波导基于特殊的双极化弯曲曲线

IF 1.5 4区物理与天体物理

Journal of Nanophotonics Pub Date : 2022-11-08 DOI: 10.1117/1.JNP.17.026012

Juanli Wang, Shangsen Sun, Runsen Zhang, Fengchun Zhang, N. Zhu, Yujing Zhang

{"title":"Ultra-compact silicon multimode waveguide bends based on special curves for dual polarizations","authors":"Juanli Wang, Shangsen Sun, Runsen Zhang, Fengchun Zhang, N. Zhu, Yujing Zhang","doi":"10.1117/1.JNP.17.026012","DOIUrl":"https://doi.org/10.1117/1.JNP.17.026012","url":null,"abstract":"Abstract. Multimode waveguide bends (MWBs) with very compact sizes are the key building blocks in the applications of different mode-division multiplexing (MDM) systems. To further increase the transmission capacity, the silicon MWBs for dual polarizations are of particular interest considering the very distinct mode behaviors under different polarizations in the silicon waveguides. Few silicon MWBs suitable for both polarizations have been studied. In this paper, we analyze several dual-polarization-MWBs based on different bending curve functions. These special curve-based silicon MWBs have the advantages of easy fabrication and low loss compared with other structures based on subwavelength structures, such as gratings. A comparison is made between the free-form curve (FFC), Bezier curve, and Euler curve, which are used in the bending region instead of a conventional arc. The transmission spectra of the first three TE and TM modes in the silicon multimode waveguide with a core thickness of 340 nm are investigated. The simulation results indicate that, with the premise of having the same effective radius, which is only 10 μm in this paper, the six-mode MWB based on the FFC has the optimal performances, including an extremely low loss <0.052 dB and low crosstalk below −25.97 dB for all six modes in the wide band of 1500 to 1600 nm. The MWBs based on the Bezier and Euler curve have degraded performances in terms of the loss and crosstalk. The results of this paper provide an efficient design method of the polarization insensitive silicon MWBs, which may leverage research for establishing complicated optical transmission systems that incorporate both the MDM and polarization-DM technology.","PeriodicalId":16449,"journal":{"name":"Journal of Nanophotonics","volume":"17 1","pages":"026012 - 026012"},"PeriodicalIF":1.5,"publicationDate":"2022-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46071022","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Polarization-universal bandgaps realized with columnar thin films 用柱状薄膜实现偏振通用带隙

IF 1.5 4区物理与天体物理

Journal of Nanophotonics Pub Date : 2022-10-01 DOI: 10.1117/1.JNP.16.046004

Ricardo A. Fiallo, A. Lakhtakia, M. Horn

引用次数: 0

Asymmetric excitations of toroidal dipole resonance and magnetic dipole quasi-bound state in the continuum in hybrid graphene-dielectric metasurface 混合石墨烯介电超表面中连续介质中环形偶极共振和磁偶极准束缚态的非对称激发

IF 1.5 4区物理与天体物理

Journal of Nanophotonics Pub Date : 2022-10-01 DOI: 10.1117/1.JNP.16.046003

Zhiqiang Hao, Yun'e Gao, Cuiying Song

引用次数: 0