Advanced Photonics Research最新文献

{"title":"Complete Mode Spectrum Decomposition of Complex-Structured Light by Computer-Generated Holography","authors":"Yunfei Ma,&nbsp;Zilong Zhang,&nbsp;Yuqi Wang,&nbsp;Hongzhi Yang,&nbsp;Wei He,&nbsp;Lingyu Kong,&nbsp;Suyi Zhao,&nbsp;Xiaotian Li,&nbsp;Yetong Hu,&nbsp;Changming Zhao","doi":"10.1002/adpr.202400164","DOIUrl":"https://doi.org/10.1002/adpr.202400164","url":null,"abstract":"<p>Analyzing or probing a complex-structured light field with a simple model to obtain its mode composition sequence and phase delays among eigenmodes is challenging. Currently, there are numerous methods for calculating the weight and analyzing the amplitude of structured light eigenmodes, particularly on orbital angular momentum light field. However, the complete mode spectrum decomposition including the eigenmodes’ indexes with the intensity coefficients and relatively phase delays still needs the comprehensive solution. In this work, the diffractive optical method to extract the complete information of complex-structured light field composed by eigenmodes superimposed state is detailly designed and proved. Through the interference between the inverse conversion of eigenmodes in the Fourier domain, complete mode spectrum can be constructed with eigenmode ordinals, amplitude weight coefficients, and relative phases. To the best of the knowledge, this marks the inaugural use of a simple computational hologram method to fully decompose the mode spectrum information, thereby obtaining more crucial intrinsic information about the intermode phases without additional efforts. This approach on analyzation and description can serve as a vital general tool for analyzing the intensity, phase, and Poynting vector field of complex-structured light fields.</p>","PeriodicalId":7263,"journal":{"name":"Advanced Photonics Research","volume":"6 2","pages":""},"PeriodicalIF":3.7,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adpr.202400164","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143187114","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Silicon-Based Optical Switch with Ge2Sb2Te5-Enabled Phase-Shifting Region","authors":"Xiaojun Chen,&nbsp;Jiao Lin,&nbsp;Ke Wang","doi":"10.1002/adpr.202400085","DOIUrl":"https://doi.org/10.1002/adpr.202400085","url":null,"abstract":"<p>With the rapid development of communication networks and computing, optical switches as an important elementary unit are highly needed. In this article, a silicon-based optical switch with <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <msub>\u0000 <mrow>\u0000 <mtext>Ge</mtext>\u0000 </mrow>\u0000 <mn>2</mn>\u0000 </msub>\u0000 <msub>\u0000 <mrow>\u0000 <mtext>Sb</mtext>\u0000 </mrow>\u0000 <mn>2</mn>\u0000 </msub>\u0000 <msub>\u0000 <mrow>\u0000 <mtext>Te</mtext>\u0000 </mrow>\u0000 <mn>5</mn>\u0000 </msub>\u0000 </mrow>\u0000 <annotation>$left(text{Ge}right)_{2} left(text{Sb}right)_{2} left(text{Te}right)_{5}$</annotation>\u0000 </semantics></math> (GST)-enabled phase-shifting region is proposed. This optical switch is based on contra-directional couplers composed of two phase-shifted Bragg gratings. To minimize the impact of GST absorption loss, GST is only used in the phase-shifting area, and the switching function is achieved by changing the state of GST. In the results, it is shown that the proposed device has a 3 dB operation bandwidth of about 163.2 GHz (1.394 nm) and an extinction ratio of about 19.06 dB for the drop port and about 20.25 dB for the through port. The loss at the central operational wavelength is about 1.3 and 1.04 dB for the through port and the drop port, respectively, and the largest loss over the entire operation bandwidth for these two ports is 1.66 and 2.35 dB. Furthermore, the optical switch is shown to be bidirectional, achieving similar performance when light propagates in the opposite direction. Compared with previous works, the proposed optical switch realizes wider operation bandwidth, higher extinction ratio, and lower loss.</p>","PeriodicalId":7263,"journal":{"name":"Advanced Photonics Research","volume":"6 2","pages":""},"PeriodicalIF":3.7,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adpr.202400085","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143186896","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Design and Experimental Demonstration of Wavelength-Selective Metamirrors on Sapphire Substrates","authors":"Mariia Matiushechkina,&nbsp;Andrey B. Evlyukhin,&nbsp;Radu Malureanu,&nbsp;Vladimir A. Zenin,&nbsp;Torgom Yezekyan,&nbsp;Andrei Lavrinenko,&nbsp;Sergey I. Bozhevolnyi,&nbsp;Boris N. Chichkov,&nbsp;Michèle Heurs","doi":"10.1002/adpr.202400116","DOIUrl":"https://doi.org/10.1002/adpr.202400116","url":null,"abstract":"<p>The increasing demand for novel mirror coating designs for new generation of gravitational wave detectors is stimulating significant research interest in investigations of reflective properties of metasurfaces. Given this strong interest, this article details a systematic methodology for fabricating reflecting metasurfaces (metamirrors) designed to operate at target wavelengths of 1064 or 1550 nm. The proposed metasurfaces consist of silicon cylindrical nanoparticles placed on a sapphire substrate. First, the dimensional parameters of the structures are thoroughly selected through numerical simulations combined with material characterization. The configurations are subsequently analyzed analytically to reveal the mirror effect, which arises from the excitation of electric and magnetic dipole moments. Following this, the metasurfaces are fabricated and experimentally characterized, demonstrating reflectivity exceeding 95% around the design wavelengths, which is in good agreement with theoretical predictions. Overall, the work demonstrates the feasibility and detailed methodology for the fabrication of thin, lightweight metamirrors capable of achieving near-perfect reflectivity at the specified target wavelengths.</p>","PeriodicalId":7263,"journal":{"name":"Advanced Photonics Research","volume":"6 3","pages":""},"PeriodicalIF":3.7,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adpr.202400116","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143530578","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Purinylidene-Based Iridium(III) Phosphors for Efficient Purple Phosphorescence and Organic Light-Emitting Devices","authors":"Jie Yan,&nbsp;Yi Pan,&nbsp;Zhi-Hao Qu,&nbsp;Zihan Xu,&nbsp;Kwok-Chung Law,&nbsp;Dong-Ying Zhou,&nbsp;Liang-Sheng Liao,&nbsp;Yun Chi,&nbsp;Kai-Chung Lau","doi":"10.1002/adpr.202400151","DOIUrl":"https://doi.org/10.1002/adpr.202400151","url":null,"abstract":"<p>\u0000It is very challenging to achieve highly efficient and low roll-off purple to deep-blue organic light-emitting diodes (OLEDs) due to the limited selection of suitable emitters. Herein, a series of Ir(III) phosphors-bearing purinylidene-based N-heterocyclic carbene (NHC) chelates are reported, namely, <i>f</i>-ct2a–d, which have successfully turned the emission peak maxima to the purple region (427–432 nm) in degassed toluene, together with high quantum yields of 77%–81%. Notably, <i>f</i>-ct2b is further employed as the phosphorescent dopant in the fabrication of OLEDs to afford deep-blue emission paking at 448 nm and an EQE of 6.7% at 100 cd m⁻². Furthermore, a true-blue hyperphosphorescent OLED with 21 wt% of <i>f</i>-ct2a as sensitizer and 1 wt% of ν-DABNA as terminal emitter is also fabricated, giving excellent performance with max. EQE up to 22.2% and an EQE of 19.2% at a brightness of 100 cd m⁻².</p>","PeriodicalId":7263,"journal":{"name":"Advanced Photonics Research","volume":"6 5","pages":""},"PeriodicalIF":3.7,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adpr.202400151","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143905362","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Complex Reflectivity Modulation Characteristics at Visible Wavelength Using Liquid Crystal on a Metasurface Device","authors":"Yong-Hae Kim,&nbsp;Kyunghee Choi,&nbsp;Jaehyun Moon,&nbsp;Jong-Heon Yang,&nbsp;Jae-Eun Pi,&nbsp;Ji-Hun Choi,&nbsp;Chi-Sun Hwang,&nbsp;Jeong-Seon Yu,&nbsp;Jong-Hyun Kim","doi":"10.1002/adpr.202400135","DOIUrl":"https://doi.org/10.1002/adpr.202400135","url":null,"abstract":"<p>Active metasurface device capable of complex modulation in the visible light range is demonstrated. To realize complex modulation, a liquid crystal (LC) of twisted nematic mode on a plasmonic antenna metasurface, where resonance wavelength is sensitive to its geometry and nearby optical environment, is integrated. For the LC process on the metasurface, the alignment characteristics of the material exposed to the LC on the metasurface are first identified and the polyimide alignment layer is omitted. The LC works in twisted nematic mode to enhance complex modulation characteristics. The complex reflectivity coefficient is measured while varying the voltage applied to both the antenna and metal electrode in the visible light region. Complex reflectivity into a doughnut shape with a small voltage variation of 3.1 V on the antenna electrode and 2.5 V on the metal electrode is successfully modulated. The largest complex modulation is achieved at a wavelength of 660 nm, with phase and reflectivity amplitude modulations of 0–2<i>π</i> radian in a doughnut shape and 0.3 and 0.6, respectively. So far true holographic experience is limited by high-order overlapping and twin images. Through this approach, a technical method is suggested for overcoming such obstacles and accomplishing advanced holographic display.</p>","PeriodicalId":7263,"journal":{"name":"Advanced Photonics Research","volume":"6 4","pages":""},"PeriodicalIF":3.7,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adpr.202400135","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143762237","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Monte Carlo Modeling of a High-Efficiency Tandem Luminescent Solar Concentrator Containing a Polarization Volume Grating Layer","authors":"Ramin Zohrabi,&nbsp;Sahar Ehsani-Tabar,&nbsp;Amir Hosein Esmaeili,&nbsp;Shadi Daghighazar,&nbsp;Kiyanoush Goudarzi","doi":"10.1002/adpr.202400054","DOIUrl":"https://doi.org/10.1002/adpr.202400054","url":null,"abstract":"<p>This article develops a Monte Carlo model to optimize a newly introduced tandem luminescent solar concentrator. This innovative structure comprises two parallel transparent polymeric waveguides separated by an air gap. The first waveguide, which is exposed to sunlight, contains fluorophores and performs as a traditional luminescent solar concentrator. In contrast, the second waveguide is equipped with an inner polarization volume grating layer, strategically placed to couple the emitted photons within the escape cone, directing them into the second waveguide and preventing reabsorption. The finite difference time domain method is employed to optimize the performance of this grating. The results show a significant improvement in external photon efficiency compared to the conventional luminescent solar concentrator.</p>","PeriodicalId":7263,"journal":{"name":"Advanced Photonics Research","volume":"5 12","pages":""},"PeriodicalIF":3.7,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adpr.202400054","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142860693","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Aberration-Corrected Holographic Optical Elements Based on Consistent Shapes of Printed Hogels","authors":"Jiwoon Yeom,&nbsp;Jung Beom Choi,&nbsp;Geun Seop Choi,&nbsp;Kwang-Soon Choi,&nbsp;Jisoo Hong","doi":"10.1002/adpr.202400152","DOIUrl":"https://doi.org/10.1002/adpr.202400152","url":null,"abstract":"<p>\u0000Herein, a holographic optical element (HOE) printing technique which maintains shapes and sizes of hogels across diverse focal positions, and aberration-corrected HOEs which are fabricated by it are proposed. The proposed HOE printer employs nonpixelated focus modulators composed of double 4<i>f</i> optics in reference and signal beam paths to record hogels with the consistent shapes, which is validated via the ray tracing simulation. An optimization algorithm is developed for aberration-corrected HOEs, dedicated to the proposed printing system. Imaging simulations verify the improved image quality compared to a baseline case by showing a 5 times sharper point spread function. As the experimental verification, a HOE printer is realized, which provides 1 × 1 mm of hogels consistently over 20° × 20° of angular ranges and 8 diopters of focal length changes. Displaying experiments using printed HOEs (mono-colored and full-colored ones) verify the proposed method with aberration-corrected and see-through images.</p>","PeriodicalId":7263,"journal":{"name":"Advanced Photonics Research","volume":"6 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adpr.202400152","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143112826","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Charge Dynamics and Defect States under “Spot-Light”: Spectroscopic Insights into Halide Perovskite Solar Cells","authors":"Junjie Wu,&nbsp;Maolin He,&nbsp;Chunming Liu,&nbsp;Peng Gao","doi":"10.1002/adpr.202400110","DOIUrl":"https://doi.org/10.1002/adpr.202400110","url":null,"abstract":"<p>\u0000Halide perovskite solar cells (PSCs) have shown remarkable power conversion efficiencies. However, the inherent defect issues of perovskite materials still limit their performance and long-term stability, resulting in lifespans far from commercial standards. With their noninvasive approach to probing the electronic and vibrational properties of materials, spectroscopic techniques have become crucial tools for uncovering and understanding defect states and complex charge carrier dynamics in halide perovskites. This review explores the application of various advanced spectroscopic techniques in PSCs to elucidate the complex behaviors of charge carriers within PSCs. These techniques reveal detailed temporal and spatial distributions of charge carriers, enabling precise analysis of defect impacts and interfacial charge transfer processes. By integrating spectroscopic data, it is possible to more accurately identify and mitigate defect-induced nonradiative recombination and charge transfer, thereby enhancing the stability and efficiency of PSCs. This comprehensive spectroscopic understanding is crucial for developing innovative technologies to accelerate the commercial viability of PSCs.</p>","PeriodicalId":7263,"journal":{"name":"Advanced Photonics Research","volume":"6 3","pages":""},"PeriodicalIF":3.7,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adpr.202400110","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143530482","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tailoring Second Harmonic Generation via Strong Coupling in a One-Dimensional Photonic Crystal Heterostructure","authors":"Ying Zhu,&nbsp;Ruize Ma,&nbsp;Anlong Dong,&nbsp;Hangsheng Xu,&nbsp;Chunhua Wang,&nbsp;Meng Qin,&nbsp;Jianqiang Liu,&nbsp;Hongju Li","doi":"10.1002/adpr.202400167","DOIUrl":"https://doi.org/10.1002/adpr.202400167","url":null,"abstract":"<p>\u0000Controlling harmonic generation is crucial for nonlinear optics and nanophotonic devices. Herein, a 1D photonic crystal heterostructure is theoretically proposed comprising a metal film, a lithium niobate layer, and a distributed Bragg reflector with a defect layer. The Tamm state and the defect state for dual-band second-harmonic generation (SHG) enhancement simultaneously are numerically investigated. Finite-element method simulations indicate that SHG efficiencies based on Tamm plasmons and the defect state are 6.85 × 10⁻⁶ and 3.28 × 10⁻⁴, respectively. Intriguingly, the strong coupling between the defect state and Tamm plasmons enables spatial energy exchange, leading to the SHG switching between them. In the strong coupling region with Rabi splitting energy up to 5.5 meV, the SHG conversion efficiency reaching 5 × 10⁻⁵ is observed for both two new hybridized states. During the entire anticrossing Rabi splitting process, the SHG efficiency difference between two resonances can be modulated by up to two orders of magnitude. The coupling strength between two resonances is adjusted by varying the position of the defect layer. Simulation results are consistent with the coupled oscillator model. This work not only offers a platform for studying nonlinear frequency conversion but also establishes a new method of using strong coupling to tailor SHG.</p>","PeriodicalId":7263,"journal":{"name":"Advanced Photonics Research","volume":"6 6","pages":""},"PeriodicalIF":3.7,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adpr.202400167","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144264351","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High-Fidelity Information Transmission Through the Turbulent Atmosphere Utilizing Partially Coherent Cylindrical Vector Beams","authors":"Linxuan Yao,&nbsp;Hui Zhang,&nbsp;Yangsheng Yuan,&nbsp;Yaru Gao,&nbsp;Chunhao Liang,&nbsp;Sergey A. Ponomarenko,&nbsp;Yangjian Cai","doi":"10.1002/adpr.202400137","DOIUrl":"https://doi.org/10.1002/adpr.202400137","url":null,"abstract":"<p>As the demand for high-capacity and high-fidelity communication systems continues to increase, addressing the challenges posed by noise and atmospheric turbulence disturbances is imperative. This study introduces and experimentally implements a novel free-space optical communication protocol. This protocol combines the advantages of reducing the spatial coherence of light at the source with the capabilities of convolutional neural networks at the receiver to encode and transmit optical images through a noisy link. Light beams that are robust against noise are generated and atmospheric turbulence is modeled in a laboratory setting by decreasing the degree of spatial coherence of the source. Eight orbital angular momentum states, four polarizations, and eight coherence states of a light source that generates partially coherent cylindrical vector beams are utilized. These elements are employed to achieve a 256-ary encoding/decoding data transmission within our protocol. This study is expected to catalyze further research into the utilization of partially coherent light and neural networks in the realm of free-space optical communications.</p>","PeriodicalId":7263,"journal":{"name":"Advanced Photonics Research","volume":"6 5","pages":""},"PeriodicalIF":3.7,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adpr.202400137","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143905167","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}