Advanced Photonics Research最新文献

{"title":"Single and Bi-Layer Glass-Based Phantoms: Robust Materials for a Calibration Standard for Fluorescence Imaging Systems","authors":"Mingze Yang,&nbsp;Yunle Wei,&nbsp;Philipp Reineck,&nbsp;Adam J. Wells,&nbsp;Heike Ebendorff-Heidepriem,&nbsp;Jiawen Li,&nbsp;Robert A. McLaughlin","doi":"10.1002/adpr.202400209","DOIUrl":"10.1002/adpr.202400209","url":null,"abstract":"<p>Fluorescence-guided surgery is an increasingly common technique in neurosurgery, where 5-aminolevulinic acid induces fluorescence in high-grade gliomas, aiding in tumor resection and improving surgical outcomes. Reliable detection of malignant tissue fluorescence depends critically upon the clinical imaging system. Factors such as nonuniform excitation light and the presence of non-fluorescent tissue layers over the tumor can reduce sensitivity. Characterizing imaging system performance in these scenarios is important to ensure clinical reliability. However, there are a lack of practical calibration standards available for this purpose. This study proposes a novel calibration standard to assist in characterizing a clinical fluorescence imaging system. The calibration standard uses multiple glass-based phantoms fabricated to mimic the optical properties of tissue. Silver nanoparticles mimic the absorption spectrum of hemoglobin; small air-filled cavities and crystals in the glass generate controlled levels of scattering; and samarium ions provide fluorescence to mimic malignant tissue. Single-layer and bilayer glass phantoms enable assessment of fluorescence across the field of view, including characterization of the sensitivity to detect fluorescence through layers of non-fluorescent glass, mimicking non-malignant tissue. The glass-based phantoms demonstrate excellent photo-stability, homogeneity, and long-term shelf-life. Utility of this calibration standard is demonstrated with a commercial surgical fluorescence imaging system.</p>","PeriodicalId":7263,"journal":{"name":"Advanced Photonics Research","volume":"6 8","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adpr.202400209","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144767492","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":"Downshifting Layer of Europium-Doped NaGdF4: From the Optimization of the Sol–Gel Process to the Luminescent Properties","authors":"Anna Lucia Pellegrino,&nbsp;Francesca Lo Presti,&nbsp;Francesca Loschi,&nbsp;Adolfo Speghini,&nbsp;Graziella Malandrino","doi":"10.1002/adpr.202570011","DOIUrl":"10.1002/adpr.202570011","url":null,"abstract":"<p><b>Europium Doping</b>\u0000 </p><p>In article number 2400153, Anna Lucia Pellegrino, Graziella Malandrino, and co-workers show that fine tuning of the operative parameters of the sol-gel/spin coating process allows to control, reproducibly and selectively, the formation of crystalline structure of the films, i.e., cubic versus hexagonal NaGdF₄ structure. The hexagonal Eu-doped NaGdF₄ thin films show promising downshifting properties, thus confirming the potential of these systems as efficient DS layers in PV technolog.\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":7263,"journal":{"name":"Advanced Photonics Research","volume":"6 5","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adpr.202570011","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143905247","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":"Harnessing Ultrafast Optical Pulses for 3D Microfabrication by Selective Tweezing and Immobilization of Colloidal Particles in an Integrated System","authors":"Krishangi Krishna,&nbsp;Jieliyue Sun,&nbsp;Wenyu Liu,&nbsp;Robert H. Hurt,&nbsp;Kimani C. Toussaint Jr.","doi":"10.1002/adpr.202570013","DOIUrl":"10.1002/adpr.202570013","url":null,"abstract":"<p><b>3D Microfabrication</b>\u0000 </p><p>Microfabrication using nano- to micron-sized blocks has transformative potential for next-gen electronics, optoelectronics, and materials. Traditional methods are limited by scalability and precision. In article number 2500003, Kimani C. Toussaint Jr and co-workers introduce STIC, a single-laser system for precise colloidal manipulation and immobilization using femtosecond lasers, enabling efficient 3D assembly and imaging, advancing scalable, high-precision microstructure fabrication.\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":7263,"journal":{"name":"Advanced Photonics Research","volume":"6 5","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adpr.202570013","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143905248","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":"940 nm Micro-Light-Emitting Diode Fabricated on Industry-Compatible 300 mm Si (100) Substrate by Metal–Organic Chemical Vapor Deposition","authors":"Hadi Hijazi,&nbsp;Driss Mouloua,&nbsp;Mattéo Chobe,&nbsp;Léo Mallet-Dida,&nbsp;Mickael Martin,&nbsp;Jérémy Moeyaert,&nbsp;Sébastien Cavalaglio,&nbsp;Nathalia Massara,&nbsp;Juliette Mignot,&nbsp;Jérôme Richy,&nbsp;Philippe Grosse,&nbsp;Jean-Michel Hartmann,&nbsp;Thierry Baron","doi":"10.1002/adpr.202400226","DOIUrl":"10.1002/adpr.202400226","url":null,"abstract":"<p>III-V light-emitting diodes (LEDs) have been attracting much interest due to their ability to cover a large spectrum of interesting wavelength for various applications. However, their incompatibility with integration on Si platforms compatible with complementary metal-oxide-semiconductor standards makes their high mass production a challenging task. Herein, the fabrication of 940 nm micro-LED on 300 mm Si wafers is reported. The active zone based on InGaAs/AlGaAs multiquantum wells is epitaxially grown by metal–organic chemical vapor deposition on two types of buffers, themselves on Si substrates: 500 nm thick GaAs and 500 nm GaAs 700 nm Ge bilayers. Very interesting results have been obtained on both structures in terms of external quantum efficiency (EQE), for example, about <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <mn>2</mn>\u0000 <mo> </mo>\u0000 <mo>×</mo>\u0000 <mo> </mo>\u0000 <msup>\u0000 <mrow>\u0000 <mn>10</mn>\u0000 </mrow>\u0000 <mrow>\u0000 <mo>−</mo>\u0000 <mn>3</mn>\u0000 </mrow>\u0000 </msup>\u0000 </mrow>\u0000 <annotation>$2 textrm{ } times textrm{ } left(10right)^{- 3}$</annotation>\u0000 </semantics></math>% and <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <mn>0.4</mn>\u0000 <mo> </mo>\u0000 <mo>×</mo>\u0000 <mo> </mo>\u0000 <msup>\u0000 <mrow>\u0000 <mn>10</mn>\u0000 </mrow>\u0000 <mrow>\u0000 <mo>−</mo>\u0000 <mn>3</mn>\u0000 </mrow>\u0000 </msup>\u0000 </mrow>\u0000 <annotation>$0.4 textrm{ } times textrm{ } left(10right)^{- 3}$</annotation>\u0000 </semantics></math>%, that is, 1/3rd and 1/15th the reference EQE obtained on bulk GaAs substrates. These results can easily be improved. Such demonstration offers a very promising roadmap for the monolithic integration of III-V μ-LED on Si platforms.</p>","PeriodicalId":7263,"journal":{"name":"Advanced Photonics Research","volume":"6 8","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adpr.202400226","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144767957","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":"Strong Coupling-Induced Topological Edge-State Laser in 1D High-Contrast Grating","authors":"Hsu-Chun Hu,&nbsp;Chia-Jui Chang,&nbsp;Jhih-Sheng Wu,&nbsp;Tien-Chang Lu","doi":"10.1002/adpr.202500049","DOIUrl":"10.1002/adpr.202500049","url":null,"abstract":"<p>In this study, the lattice constant and filling factor of the 1D high-contrast grating (HCG) to induce strong coupling and weak coupling between transverse guided modes, to create mode parity transitions, are manipulated. In the strong coupling regime, the band inversion happens at the Γ point and changes the topology of the band structure. Hence, this hidden symmetric parameter transforms the HCG structures in the strong coupling and weak coupling regimes to the topological and trivial states, respectively. In the experiment, topological edge-state lasers by combining topological and trivial lattices are demonstrated. According to bulk-edge correspondence, a highly localized state unambiguously appears at the structure boundary, which can be utilized as a laser cavity. The laser emission is successfully demonstrated at room temperature in the 1D semiconductor HCG with multiple quantum wells. Compared with the traditional 1D band edge laser, the novel design has a lower threshold and narrower laser linewidth. Compared with the traditional 1D topological edge-state laser, the innovative design exhibits better robustness against defects. The results pave the way for further novel topological laser cavity designs.</p>","PeriodicalId":7263,"journal":{"name":"Advanced Photonics Research","volume":"6 7","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adpr.202500049","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144574305","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":"Programmable Wide-Spectrum Complex Microcavity Laser Controlled by Liquid Crystal Elastomer Braking Mechanism","authors":"Hongyang Zhu,&nbsp;Bingquan Zhao,&nbsp;Zhen He,&nbsp;Junxin Wei,&nbsp;Chensha Li","doi":"10.1002/adpr.202400225","DOIUrl":"10.1002/adpr.202400225","url":null,"abstract":"<p>Complex laser architectures employing disordered microcavities demonstrate unique advantages characterized by micro/nano-scale cavity dimensions, facile integration capabilities, exceptional sensitivity to external field perturbations, and extensive parametric tunability. These distinctive features have catalyzed the emergence of innovative paradigms for intelligent multidimensional external field manipulation, particularly through strategic employment of advanced functional materials. This article presents a fiber-based microcavity complex laser system featuring programmable deformation control through a multiaxis liquid crystal elastomer (LCE) actuator under photothermal excitation. The resultant deformed LCE film serves both as a controllable localized scattering medium in the formation of fiber-based microcavity complex lasers and as an intelligent actuator actively involved in photon resonance, coupling, and transmission within fiber-arrayed microcavities. This dual functionality facilitates the generation, regulation, and transmission of broadband spectrum lasers through coordinated multiphysics interactions. Spatially patterned optical excitation facilitates programmable two-dimensional contraction/expansion control of the LCE matrix, inducing switchable resonance regimes (either independent resonance or mutually scattering) within the coupled cavity system. The resulting wavelength-agile platform exhibits broad spectral adaptability across multiple photonic operation regimes. This innovative approach significantly expands the functional scope of LCE materials, establishing a sophisticated technological framework for multidimensional photonic control in next-generation optoelectronic systems.</p>","PeriodicalId":7263,"journal":{"name":"Advanced Photonics Research","volume":"6 8","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adpr.202400225","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144767986","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":"Enhanced Amplified Spontaneous Emission from Optically Pumped Perovskite Light-Emitting Diodes with Sodium Fluoride Additives","authors":"Kanak Kanti Bhowmik,&nbsp;Yongji Wu,&nbsp;Xiaolei Zhao,&nbsp;Travis Wanless,&nbsp;Kwangdong Roh,&nbsp;Stephen H. Foulger,&nbsp;Lin Zhu,&nbsp;Hai Xiao,&nbsp;Lianfeng Zhao","doi":"10.1002/adpr.202500025","DOIUrl":"10.1002/adpr.202500025","url":null,"abstract":"<p>Metal halide perovskites represent a promising class of gain media for next-generation nonepitaxial laser diodes. However, fully electrically pumped perovskite laser diodes have not been achieved yet. Herein, the use of sodium fluoride (NaF) is explored as an efficient additive in halide perovskite films to improve their optical and light amplification properties. The incorporation of NaF in perovskites leads to a remarkable threefold increase in light-emitting intensity. The threshold of amplified spontaneous emission (ASE) by optical pumping is reduced by more than 20%, from ≈13.5 to 10.4 μJ cm⁻². Furthermore, the NaF-modified perovskites exhibit stable ASE emission, even after exposure to 1.5 billion optical pulses, highlighting substantial improvements in the material's photostability. Finally, optically pumped ASE is observed from a full perovskite light-emitting diode stack, including lossy metal electrodes. This work demonstrates significant progress toward the development of electrically pumped perovskite lasers.</p>","PeriodicalId":7263,"journal":{"name":"Advanced Photonics Research","volume":"6 8","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adpr.202500025","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144768061","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":"Directional Whispering Gallery Mode in Microring Lasers Enabled by Tilted Azimuthal Gratings","authors":"Jinghan Chen,&nbsp;Adrian Abazi,&nbsp;Frederik van Schoonhoven,&nbsp;Yuji Oki,&nbsp;Yohei Yamamoto,&nbsp;Carsten Schuck,&nbsp;Hiroaki Yoshioka","doi":"10.1002/adpr.202400172","DOIUrl":"10.1002/adpr.202400172","url":null,"abstract":"<p>Whispering gallery mode (WGM) microcavities, which have been extensively studied for their ultrahigh Q factors and small mode volumes, are exceptional platforms for achieving ultralow-threshold microlasers and functional resonators. However, the rotational symmetry of these structures traps light inside, resulting in an isotropic output and limiting their use in photonics. Special structural modifications are required to achieve a unidirectional light output in WGM cavity lasers. This study introduces and experimentally validates a novel method for achieving unidirectional light propagation in lasing microrings. Spatial symmetry is broken by integrating tilted azimuthal gratings on the inner wall of the microring. Consequently, clockwise and counterclockwise propagating WGMs exhibit distinct propagation losses and backscattering coefficients depending on the tilt angle of the grating, thereby enabling a controllable direction. This advancement paves the way for enhanced applications in integrated photonics such as unidirectional light sources and orbital angular momentum emitters, thereby expanding the functional capabilities of WGM microcavities.</p>","PeriodicalId":7263,"journal":{"name":"Advanced Photonics Research","volume":"6 8","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adpr.202400172","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144768062","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-Throughput Single-Nanowire Optoelectronic Characterization Using Microfluidic Technology","authors":"Tharaka MDS Weeraddana,&nbsp;Keisuke Minehisa,&nbsp;Stephen A. Church,&nbsp;Charles Smith,&nbsp;Fumitaro Ishikawa,&nbsp;Patrick Parkinson","doi":"10.1002/adpr.202500050","DOIUrl":"10.1002/adpr.202500050","url":null,"abstract":"<p>Technologies relying on single optoelectronic nanoparticles require characterization of individual particle performance, often demanding destructive dispersal of particles from solution. A microfluidic chip with an ultrathin channel (8 μm) provides a platform for the sequential high-speed single-particle characterization of functional nanomaterials using correlative spectroscopy and imaging. This platform is shown to allow study of semiconductor nanowires with measurement rates of up to 240 nanowires/minute in continuous operation, enabling a dramatically improved and statistically robust comparison of intrawire disorder with interwire homogeneity. An analysis of over 15 k GaAs/AlGaAs nanowires reveals that ensemble measurements overestimate the full-width at half-maximum of emission by more than 4× and statistical dispersion of electronic disorder by 28%, demonstrating the importance of single-particle studies.</p>","PeriodicalId":7263,"journal":{"name":"Advanced Photonics Research","volume":"6 7","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adpr.202500050","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144573854","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 of Waveguide NbN-Based Superconductor–Insulator–Superconductor Mixer for 650 GHz","authors":"Lianhao He,&nbsp;Fangting Lin,&nbsp;Xiaoyong He","doi":"10.1002/adpr.202400197","DOIUrl":"10.1002/adpr.202400197","url":null,"abstract":"<p>The submillimeter band accounts for a significant proportion of the photon energy in the universe, and an atmospheric window in the 600–720 GHz band is essential for astronomical detection because it contains a large number of molecular and atomic spectral lines. The superconductor–insulator–superconductor (SIS) mixer is one of the most sensitive coherent detectors. In order to improve the accuracy of detection and sensitivity and reduce noise temperature, a novel SIS mixer is proposed. It includes the design of the SIS junction, the signal coupling circuit, and the mixing circuit. After the initial optimization of the NbN-based SIS junction's parameters, a signal coupling circuit is designed, with a return loss of less than −16 dB and an embedding impedance of 60 Ω. The mixing circuit is composed of the impedance transformer and tuning circuit. It is investigated using the SuperMix library, including the analysis of the effects of transformer width and tuner length. The return loss is less than −7.5 dB, and it is reduced by about 34% when the transformer width is decreased from 2.6 to 2.0 μm, indicating a good transmission performance. The research results can provide a reference for the development of high-frequency and high-sensitivity SIS mixers.</p>","PeriodicalId":7263,"journal":{"name":"Advanced Photonics Research","volume":"6 7","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adpr.202400197","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144574173","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}