Journal of Nanophotonics最新文献

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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
{"title":"Parallel computing for modeling multilayer photonic crystals","authors":"A. Richardson, Shavaiz I. Mir, S. Morris, S. Elston, A. Yetisen, Y. Montelongo","doi":"10.1117/1.JNP.17.016007","DOIUrl":"https://doi.org/10.1117/1.JNP.17.016007","url":null,"abstract":"Abstract. A simulation framework is developed for the two-dimensional finite-difference time-domain to model multilayer photonic crystal structures. The framework includes the recording process in a photosensitive material through a coherent light source and then a subsequent interrogation with a broadband spectrum. Moreover, the tunable response of the photonic crystal is simulated for different film thicknesses (recorded from 5 to 20  μm), refractive indices contrast (ranging from 4% to 24%), film expansions (interrogated with expansions ranging 110% to 160%), and lattice spacings (recorded with wavelengths from 360 to 560 nm). A parallelization method was implemented in a computer cluster to alleviate the required high computational demand. Through this simulation framework, it is now possible to retrieve relevant information about realistic photosensitive multilayer structures. This method will support the design of multilayer structures utilized in sensors, lasers, and other functional nanostructured photonic devices.","PeriodicalId":16449,"journal":{"name":"Journal of Nanophotonics","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48964219","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
Strong coupling between longitudinal and U-shaped localized surface plasmon modes in rectangular grating-shaped gold nanostructures 矩形光栅形金纳米结构中纵向和u形局域表面等离子体模之间的强耦合
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.17.016010
Xiaorui Wang, Shijie Xu
{"title":"Strong coupling between longitudinal and U-shaped localized surface plasmon modes in rectangular grating-shaped gold nanostructures","authors":"Xiaorui Wang, Shijie Xu","doi":"10.1117/1.JNP.17.016010","DOIUrl":"https://doi.org/10.1117/1.JNP.17.016010","url":null,"abstract":"Abstract. Strong couplings between localized surface plasmon resonance (LSPR) modes and single quantum emitters have been intensively investigated recently, and meanwhile the coupling between different LSPR modes inside individual metallic nanoparticle is still rarely researched. Herein, the strong coupling is investigated for different LSPR modes inside individual rectangular-grating-shaped gold nanostructure composed of one main-cuboid and two side-attached subcuboids. Original uncoupled LSPR modes are revealed to be longitudinal and U-shaped LSPRs. For the nanostructure with increased main-cuboid length, the dispersion curves of simulated dual-original LSPR scattering wavelengths and dual-coupled LSPR scattering wavelengths show typical strong coupling patterns featuring anti-crossing and large Rabi splitting of 598.1 meV. The strong coupling is considered to be caused by the overlap of longitudinal and U-shaped LSPR oscillation modes in the gold nanostructure. The extracted coupling strength is found in order of 1013  Hz and it increases with the LSPR overlap length. The spatial mode and time evolution of the coupled LSPR modes are also numerically investigated. The simulated results are well comprehended with the classical strong coupling model of oscillators, further confirming the coupling between the longitudinal and the U-shaped LSPRs. The experimental dark-field scattering spectrum shows the existence of U-shaped LSPR mode in the gold nanostructure.","PeriodicalId":16449,"journal":{"name":"Journal of Nanophotonics","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42878727","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
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":null,"pages":null},"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
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":null,"pages":null},"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
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
{"title":"Single microhole per pixel for thin Ge-on-Si complementary metal-oxide semiconductor image sensor with enhanced sensitivity up to 1700 nm","authors":"E. Ponizovskaya-Devine, A. Mayet, Amita Rawat, Ahasan Ahamed, Shih-Yuan Wang, A. Elrefaie, Toshishige Yamada, M. Saif Islam","doi":"10.1117/1.JNP.17.016012","DOIUrl":"https://doi.org/10.1117/1.JNP.17.016012","url":null,"abstract":"Abstract. We present a germanium “Ge-on-Si” CMOS image sensor with backside illumination for the near-infrared (NIR) electromagnetic waves (wavelength range 300 to 1700 nm) detection essential for optical sensor technology. The microholes help to enhance the optical efficiency and extend the range to the 1.7-μm wavelength. We demonstrate an optimization for the width and depth of the microholes for maximal absorption in the NIR. We show a reduction in the crosstalk by employing thin SiO2 deep trench isolation in between the pixels. Finally, we show a 26 to 50% reduction in the device capacitance with the introduction of a microhole. Such CMOS-compatible Ge-on-Si sensors will enable high-density, ultrafast, and efficient NIR imaging.","PeriodicalId":16449,"journal":{"name":"Journal of Nanophotonics","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41647764","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
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":null,"pages":null},"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
{"title":"Assessment of Bloch surface wave-based one-dimensional photonic crystal sensor using ultraviolet range","authors":"K. Sagar, Ajay Kumar","doi":"10.1117/1.JNP.17.016009","DOIUrl":"https://doi.org/10.1117/1.JNP.17.016009","url":null,"abstract":"Abstract. To generate resonance in the ultraviolet (UV) wavelength region, we have developed a Bragg mirror structure with a SiO2 top layer. This paper shows the wavelength at which sensitivity occurs by modifying the architecture of the one-dimensional photonic crystal (1D-PhC) structure appropriately. The structural parameters are adjusted to excite a Bloch surface wave with a wavelength of 256 and 281 nm at the top interface, which are the operational wavelengths. The spectrum’s distribution of electric fields and mode confinement confirmed the suggested structure with an 8-nm thick defect layer. The proposed design is empathetic at UV wavelength with varying analyte’s refractive index value. The investigation shows that the sensitivity is about 107.42 and 101.85 deg/RIU, and the quality factor is 1426.17 and 1708.14 nm at UV wavelengths of 281 and 256 nm, respectively.","PeriodicalId":16449,"journal":{"name":"Journal of Nanophotonics","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46385514","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
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
{"title":"Germanium and silicon-based nanohole LWIR metalens design and fabrication","authors":"Nazmi Yilmaz, Halil Can Nalbant, Fatih Balli, Arda Eren, Tolga Yelboğa, Ahmet Sözak","doi":"10.1117/1.JNP.17.016006","DOIUrl":"https://doi.org/10.1117/1.JNP.17.016006","url":null,"abstract":"Abstract. Thermal imaging, particularly LWIR imaging, has several applications in commercial and security systems. The fundamental problem with the development of metalens is the lack of appropriate materials for LWIR applications. The development of silicon metalens is hampered by the material’s own LWIR spectral band absorption, although silicon is the ideal material for lithography due to its widespread use in CMOS applications. In this study, metalens working on LWIR spectral band has been designed and fabricated using the highly suitable material germanium and low-cost silicon. The focusing and imaging capacity of two types of metasurfaces has been investigated, and a comparison of the results has been presented in the paper.","PeriodicalId":16449,"journal":{"name":"Journal of Nanophotonics","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46485043","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
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":null,"pages":null},"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
{"title":"Polarization-universal bandgaps realized with columnar thin films","authors":"Ricardo A. Fiallo, A. Lakhtakia, M. Horn","doi":"10.1117/1.JNP.16.046004","DOIUrl":"https://doi.org/10.1117/1.JNP.16.046004","url":null,"abstract":"Abstract. Equichiral sculptured thin films (ECSTFs) with unit cells comprising a sequence of four identical columnar thin films were fabricated using asymmetric serial bideposition to exhibit the polarization-universal Bragg phenomenon. Oblique-angle optical transmission measurements of the ECSTFs showed bands of total transmittance values under 20%, regardless of the polarization state of the incident plane wave. These polarization-universal bandgaps can be tuned by adjusting the angle of incidence.","PeriodicalId":16449,"journal":{"name":"Journal of Nanophotonics","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"63568767","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
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