Optik最新文献

{"title":"Structured light-induced enhancement of fiber-optic refractive index sensing via the excitation of Laguerre higher-order cosh-Gaussian mode","authors":"Bodem Indraja,&nbsp;Arijit Datta,&nbsp;Sreenivasulu Tupakula,&nbsp;Swagata Samanta","doi":"10.1016/j.ijleo.2026.172682","DOIUrl":"10.1016/j.ijleo.2026.172682","url":null,"abstract":"<div><div>Contemporary advances in the spatial-temporal modulation of electromagnetic wavefields have fundamentally reshaped optical beam-shaping paradigms, positioning structured light as a pivotal enabler of next-generation photonic architectures and catalysing transformative developments in nanoscale optics, ultra-sensitive sensing, computational imaging, and high-bandwidth optical communications. Within this evolving landscape, structured-light engineering has unlocked unprecedented control over modal excitation and propagation dynamics in fiber-optic platforms. Nevertheless, despite these advances, most fiber-optic sensing schemes still rely on conventional Gaussian-beam illumination, which is inherently limited in its capacity to preferentially couple energy into higher-order guided modes, resulting in reduced evanescent-field extension and weaker interaction with the surrounding medium. Motivated by this fundamental shortcoming, the present work unveils what we believe to be a novel waveguide-based refractive index sensing system by launching a Laguerre higher-order cosh-Gaussian beam (LHOChGB), whose non-trivial spatial structure enables preferential coupling of higher-order guided modes within a uncladded multimode fiber, thereby enhancing the evanescent field localization and strengthening the guided-mode interaction with the external medium. Furthermore, our study was corroborated by using the beam propagation simulations based on the finite-difference method in OptiBPM to characterize the propagation dynamics of the LHOChGB within the sensor structure. Such rigorous analysis unequivocally demonstrates an impressive peak absolute sensitivity of 33.72 dB/RIU, representing an approximate 10.6-fold enhancement over the conventional Gaussian-excited sensor, which typically yields a sensitivity of 3.18 dB/RIU. Therefore, this incipient genre of structured optical field propels innovative trajectories in the field of optical sensing and exhibits substantial potential for multifaceted physico-chemical and biosensing applications.</div></div>","PeriodicalId":19513,"journal":{"name":"Optik","volume":"348 ","pages":"Article 172682"},"PeriodicalIF":3.1,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146090342","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

{"title":"Orbital angular momentum of vector light fields at the tight focus","authors":"V.V. Kotlyar ,&nbsp;A.A. Kovalev","doi":"10.1016/j.ijleo.2026.172680","DOIUrl":"10.1016/j.ijleo.2026.172680","url":null,"abstract":"<div><div>We introduce here new physical quantities. By analogy with the conventional orbital angular momentum (OAM), they are called polarization OAM and hybrid OAM. It is known that the conventional OAM indicates the presence of an optical vortex in the light field and is equal to the topological charge. The same way, the polarization OAM indicates the presence of a \"vortex of the linear polarization direction\" in the vector field and is equal to the singularity index of the vector field. Thus, it shows how many full turnovers makes the linear polarization vector along a closed contour around the optical axis. The hybrid OAM demonstrates that along a closed contour around the optical axis, the vector field changes not only by the direction of major axis of the polarization ellipse, but also by the ratio between the major and minor ellipse axes. The hybrid OAM is equal to the number of full turnovers of the polarization ellipse. These new OAMs are derived for several typical initial vector fields to demonstrate their functionality. The initial electric field has only two transverse components, which determine the longitudinal component of the OAM vector. However, at the tight focus, all three components of the E-vector arise, and therefore, longitudinal component of the OAM vector is defined by all three electric field components. Thus, if one of these three OAMs is zero in the initial field, then at the focus, this OAM can become nonzero due to appearing longitudinal field component, contributing to this OAM. We believe that these newly introduced OAMs can be applicable to other vector fields, allowing more complete description of their properties.</div></div>","PeriodicalId":19513,"journal":{"name":"Optik","volume":"348 ","pages":"Article 172680"},"PeriodicalIF":3.1,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146090341","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

{"title":"ML-driven gain equalization and enhancement in O+E+S+C multiband optical fiber amplifier","authors":"Krishna Sarma,&nbsp;Divyendu Vats,&nbsp;Mohd Mansoor Khan","doi":"10.1016/j.ijleo.2026.172675","DOIUrl":"10.1016/j.ijleo.2026.172675","url":null,"abstract":"<div><div>This work introduces the design and performance analysis of a hybrid optical amplifier (HOA) operating across the O+E+S+C-bands, achieved by integrating Praseodymium-doped fiber amplifiers (PDFAs), Thulium-doped fiber amplifiers (TDFAs), and Erbium-doped fiber amplifiers (EDFAs) along with a Raman amplifier (RA). The PDFA, TDFA, and EDFA modules are configured in parallel to amplify optical signals spanning from 1270–1560 nm. However, this configuration exhibits reduced gain performance in the 1360–1410 nm and 1500–1520 nm regions, yielding gains of <span><math><mo>∼</mo></math></span>18 dB and <span><math><mo>∼</mo></math></span>23 dB, respectively, due to the limited spectral coverage of the individual amplifier modules. To overcome these limitations, a Raman amplifier is cascaded with the PDFA–TDFA–EDFA setup to enhance gain performance in the affected regions with an average gain of 30 dB. To optimize the amplifier’s performance across the O+E+S+C-bands, a machine learning (ML) model, P2RAMnet (Pump Parameter Optimization of Raman Amplifier for Multiband Amplification), is developed to predict optimal Raman pump parameters. The model demonstrates high accuracy, with a mean squared error (MSE) of <span><math><mo>∼</mo></math></span> 0.5 dB² and a mean absolute error (MAE) of <span><math><mo>&lt;</mo></math></span> 0.2 dB. Among all input features, the pump wavelength emerges as the most influential factor, as identified by SHapley Additive exPlanations (SHAP) analysis. Moreover, PDF analysis shows that the majority of prediction errors fall within <span><math><mo>±</mo></math></span>3 dB, highlighting the model’s accuracy and reliability. The pump parameters predicted by P2RAMnet suggest a pump wavelength of 1321 nm at 1500 mW for the 1360–1410 nm region, and a pump wavelength of 1400 nm at 1300 mW for the 1500–1520 nm region. The predicted parameters are validated through OptiSystem<span><math><msup><mspace></mspace><mi>®</mi></msup></math></span> simulations, achieving gain flatness of 4 dB in the 1360–1410 nm range and 2.4 dB in the 1500–1520 nm range, while maintaining a gain of <span><math><mo>&gt;</mo></math></span> 26 dB across the 1280–1550 nm spectrum.</div></div>","PeriodicalId":19513,"journal":{"name":"Optik","volume":"348 ","pages":"Article 172675"},"PeriodicalIF":3.1,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146080614","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

{"title":"Multi-directional controllable electro-optical switch based on grating coupler","authors":"Yuling Shang ,&nbsp;Qilan Xu ,&nbsp;Shujie Deng ,&nbsp;Hui Jiang ,&nbsp;Chunquan Li ,&nbsp;Shaoyun Wu ,&nbsp;Guotao Huang ,&nbsp;Fei Huang","doi":"10.1016/j.ijleo.2026.172685","DOIUrl":"10.1016/j.ijleo.2026.172685","url":null,"abstract":"<div><div>In this paper, based on a lithium niobate thin film (LNTF) photonic integration platform, addressing the difficulties of high microwave loss and restricted optical signal transmission direction in traditional electro-optic modulators, a multi-directional controllable electro-optical switch structure based on a grating coupler is proposed and designed. By cascading three directional couplers and a grating-assisted contra-directional coupler (GACDC), and combining the low-loss transmission characteristics of tapered waveguide and bent waveguide, a multi-directional controllable optical switch is constructed to support forward and reverse transmission of optical signals. Due to the problem of metal absorption and high microwave loss induced by tiny electrode gaps in LNTF electro-optic modulators, traveling wave electrodes with micro-structures were designed to overcome this limitation. Simulation verification with the input of TE₀ mode light with a wavelength of 1550 nm shows that the coupling efficiencies of the output ports (Port₆, Port₉, Port₁₁, and Port₁₂) reach 0.828, 0.830, 0.748, and 0.750, corresponding to insertion losses of 0.82 dB, 0.81 dB, 1.26 dB, and 1.25 dB, respectively. The insertion loss of the GACDC within the device is only 0.56 dB, and the inverse crosstalk is as low as −21 dB; the transmission response of the TE₀ polarization mode is higher than −1.3 dB at the download port in the wavelength range from 1548 to 1553 nm. The flexible output of optical signals from different ports is realized by dynamically modulating the optical signal paths through electrode groups. This study provides a low-loss, multi-directional controllable solution for high-density photonic integrated circuits.</div></div>","PeriodicalId":19513,"journal":{"name":"Optik","volume":"348 ","pages":"Article 172685"},"PeriodicalIF":3.1,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146190271","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

{"title":"Transfer-matrix analysis of Fibonacci quasi-periodic dielectric multilayers for broadband optical back-reflection","authors":"Coskun Firat","doi":"10.1016/j.ijleo.2026.172747","DOIUrl":"10.1016/j.ijleo.2026.172747","url":null,"abstract":"<div><div>Thin-film optics and radiative-transfer applications, including rear reflectors for energy converters, depend heavily on optical coating design and broadband light control in layered dielectric materials. Using a 2-µm crystalline-silicon absorber, this study shows a methodical transfer-matrix analysis of quasi-periodic Fibonacci TiO₂/SiO₂ multilayers as broadband back reflectors. Sellmeier parameterizations characterize material dispersion, while an analytical fit to tabulated optical data captures silicon absorption. At similar layer counts, Fibonacci stacks from generation orders 4–10 (5–89 layers) are compared against random multilayers and periodic quarter-wave distributed Bragg reflectors (DBRs). Under AM1.5<!--> <!-->G illumination, performance is assessed using a photon-flux-weighted reflectance metric together with the matching short-circuit current density <em>J</em>_sc from a planar two-pass absorption model. Quarter-wave thicknesses are <em>d</em>_A=57.6<!--> <!-->nm and <em>d</em>_B=102.9<!--> <!-->nm at a 600<!--> <!-->nm design wavelength. For 34 layers, the Gen-8 Fibonacci structure yields <em>J</em>_sc=22.50<!--> <!-->mA<!--> <!-->cm^-2, representing a 17.4% increase over a no-reflector baseline and 92.3% of the ideal planar upper bound. While Fibonacci stacks have better broadband reflectance than DBRs (71.8% vs 60.2%), DBRs generate greater <em>J</em>_sc (24.04<!--> <!-->mA<!--> <!-->cm^-2) because of their spectral alignment with strong silicon absorption, therefore emphasizing a spectral-selectivity trade-off. Optimizing design wavelength helps to close this difference; the Fibonacci structure achieves <em>J</em>_sc=23.70<!--> <!-->mA<!--> <!-->cm^-2 at λ₀=475<!--> <!-->nm. Field-intensity profiles show clear light-trapping processes, and tolerance testing demonstrates resilience. Reported findings apply to TE polarisation.</div></div>","PeriodicalId":19513,"journal":{"name":"Optik","volume":"350 ","pages":"Article 172747"},"PeriodicalIF":3.1,"publicationDate":"2026-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147660929","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

{"title":"Variable refractive index waveguides for mid-infrared sensing","authors":"Beibei Kong ,&nbsp;Maren Anna Brandsrud ,&nbsp;Pranish Karki ,&nbsp;Boris Mizaikoff ,&nbsp;Achim Kohler","doi":"10.1016/j.ijleo.2025.172662","DOIUrl":"10.1016/j.ijleo.2025.172662","url":null,"abstract":"<div><div>Evanescent fields in attenuated total reflection (ATR) spectroscopy have enabled molecular analysis in the mid-infrared (MIR) region for decades. Recently, thin-film single-mode waveguides have been introduced, significantly improving sample interactions through evanescent fields along their surfaces. However, their implementation demands precise coupling of an infrared laser beam into a sub-wavelength-thick layer, posing design challenges. Here, we introduce gradient refractive index waveguides that achieve robust coupling, substantially enhanced evanescent fields and absorption efficiency, surpassing the performance of conventional single-mode waveguides. Using in-house Finite-Difference Time-Domain (FDTD) simulations validated against commercial software, we demonstrate that these waveguides enhance sample interactions by an order of magnitude. Moreover, their increased robustness simplifies optical system design and broadens their applicability across a wide wavelength range, making them compatible with broadband tunable lasers, LEDs (light-emitting diodes), and they have the potential to accommodate less collimated light sources, such as thermal light sources. This novel waveguide platform promises to advance mid-infrared ATR sensor technologies, particularly in lab-on-a-chip systems and compact devices targeting biomedical and environmental applications.</div></div>","PeriodicalId":19513,"journal":{"name":"Optik","volume":"347 ","pages":"Article 172662"},"PeriodicalIF":3.1,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145978583","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

{"title":"Fabrication approaches for THz metasurfaces: A comprehensive review","authors":"Meraline Selvaraj,&nbsp;Sreeja B S","doi":"10.1016/j.ijleo.2025.172664","DOIUrl":"10.1016/j.ijleo.2025.172664","url":null,"abstract":"<div><div>Over the past decade, metamaterials have emerged as a revolutionary class of engineered materials, capturing significant attention across diverse scientific domains. Metasurfaces, composed of two-dimensional arrays of engineered meta-atoms, offer precise control over electromagnetic wave amplitude, phase, and polarization at subwavelength scales. This capability makes them an ideal platform for the design of ultra-compact, high-performance components in the THz regime. A critical challenge in transitioning these innovations to practical applications lies in the scalable fabrication of large-area, uniform, and high-resolution micro/nanostructures compatible with THz operation. This review explores the current state-of-the-art fabrication techniques for THz metasurfaces, including lithography, two-photon polymerization, 3D printing, and other advanced fabrication techniques. Each technique’s applicability, advantages, and limitations in achieving structural precision and optimal performance are highlighted. Additionally, challenges in the THz metasurface fabrication are addressed, along with potential solutions to guide future advancements in high-performance THz devices.</div></div>","PeriodicalId":19513,"journal":{"name":"Optik","volume":"347 ","pages":"Article 172664"},"PeriodicalIF":3.1,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145885496","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

{"title":"Image deconvolution using adapted cauchy method","authors":"Zohair Al-Ameen","doi":"10.1016/j.ijleo.2026.172665","DOIUrl":"10.1016/j.ijleo.2026.172665","url":null,"abstract":"<div><div>Generating clearer artifact-suppressed images is vital in various real-world scenarios, where hardware and software limitations often introduce blur. Image deconvolution (ID) aims to reverse this degradation, where prevailing methods vary in intricacy and frequently struggle to maintain stability and acuity across iterations. Driven by the need for non-complex and expeditious solutions, this study explores the use of the classical Cauchy method for ID, a method that, to the best of my knowledge, has not been previously investigated. Accordingly, two contributions are proposed based on this principle. First, the classical Cauchy method (CCM) is modified by embedding the blurring kernel into the iterative update structure, allowing CCM to work as an ID method. Second, an adapted Cauchy method (ACM) is introduced based on CCM. ACM further improves stability and suppresses artifacts better by utilizing a gradient reblurring formulation and an optimized step length rule. ACM is implemented and tested with images of real-life scenes, compared with six existing algorithms, and evaluated using four measures. Experimental results demonstrated that ACM showed a strong ability to restore diverse images while suppressing artifacts, surpassing existing methods in this field. This study showed that a non-complex method can achieve competitive and distinguished results, making it a valuable tool for image deconvolution. The related source codes are available at: <span><span>https://github.com/qi-zohair/ACM</span><svg><path></path></svg></span>.</div></div>","PeriodicalId":19513,"journal":{"name":"Optik","volume":"347 ","pages":"Article 172665"},"PeriodicalIF":3.1,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145885499","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

{"title":"Physics-informed neural networks for predicting ultrashort optical pulse dynamics in nonlinear fiber systems","authors":"Régis Donald Hontinfinde ,&nbsp;Charbel Z.J. Mamlankou ,&nbsp;Senan Ida Valérie Hontinfinde ,&nbsp;Marc Amour Ayela ,&nbsp;Gaston Edah","doi":"10.1016/j.ijleo.2026.172673","DOIUrl":"10.1016/j.ijleo.2026.172673","url":null,"abstract":"<div><div>We present a deep learning approach for predicting the nonlinear propagation dynamics of ultrashort optical pulses in fiber-optic systems using Physics-Informed Neural Networks (PINNs). The method solves the Hirota equation, which governs femtosecond pulse propagation in long-haul optical communications by incorporating higher-order dispersion and nonlinear delay effects. By embedding physical conservation laws directly into the neural network loss function, our approach achieves high-precision predictions with absolute errors ranging from <span><math><msup><mn>10</mn><mrow><mo>−</mo><mn>4</mn></mrow></msup></math></span> to <span><math><msup><mn>10</mn><mrow><mo>−</mo><mn>3</mn></mrow></msup></math></span> when validated against finite-difference reference solutions. Numerical experiments across multiple parameter configurations demonstrate the robustness and computational efficiency of the PINNs framework. The predicted soliton evolution profiles reveal stable pulse propagation characteristics essential for designing next-generation high-capacity optical telecommunication systems. Our results establish PINNs as a powerful computational tool for analyzing complex nonlinear wave phenomena in optical fibers.</div></div>","PeriodicalId":19513,"journal":{"name":"Optik","volume":"347 ","pages":"Article 172673"},"PeriodicalIF":3.1,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146023148","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

{"title":"Dual-resonance multilayer Tamm plasmon polariton biosensor for cancer cell detection","authors":"Ahmed Sameer Hatem Alani,&nbsp;Aqilah Baseri Huddin,&nbsp;Norhana Arsad","doi":"10.1016/j.ijleo.2025.172642","DOIUrl":"10.1016/j.ijleo.2025.172642","url":null,"abstract":"<div><div>This work presents a highly efficient multilayer biosensor based on dual‑resonance Tamm plasmon polaritons (TPPs), designed for ultra‑sensitive detection of lung cancer cells. The sensor employs a thin metal-dielectric interface integrated atop an all-dielectric photonic crystal, enabling two ultra-narrowband resonances under normal incidence without the use of coupling prisms or gratings. Numerical modeling using the transfer matrix method (TMM) confirms strong field confinement at the metal-sample interface, resulting in high spectral selectivity and dual resonance modes with full width at half maximum (FWHM) values of 0.133 nm and 0.143 nm. The corresponding quality factors (<em>Q</em>) reach 4029 and 3778, and figures of merit (FoM) are 90 RIU⁻¹ and 106 RIU⁻¹, respectively. The device exhibits sensitivities of 12 nm/RIU and 15.1 nm/RIU for a refractive index variation of Δ<em>n</em>_<em>S</em> = 0.01. For biological testing with A549 lung cells, resonance shifts of 0.20 nm and 0.23 nm are observed between healthy (<em>n</em> = 1.3662) and cancerous (<em>n</em> = 1.3568) samples. Considering a spectrometer resolution of 0.1 nm, the minimum detectable refractive index changes are 8.3 × 10⁻³ RIU and 6.6 × 10⁻³ RIU for the two resonances. Due to its ultra‑narrow linewidth, high FoM, label‑free operation, and compatibility with standard thin‑film fabrication, the proposed TPP‑based biosensor offers a compact and accurate platform for real‑time optical cancer diagnostics.</div></div>","PeriodicalId":19513,"journal":{"name":"Optik","volume":"347 ","pages":"Article 172642"},"PeriodicalIF":3.1,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145842307","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}