{"title":"Tunable Optical Properties and Enhanced Stability of Organic-Inorganic Hybrid Cu-Based Halide Thin Films for Advanced Anti-Counterfeiting Applications","authors":"Yandong Ren, Zhen Xuan, Jiben Yang, Jianbo Chang, Yuntong Jia, Xueai Yin, Yonghao Liu, Jia-ao Wang, Graeme Henkelman","doi":"10.1002/lpor.202501078","DOIUrl":"https://doi.org/10.1002/lpor.202501078","url":null,"abstract":"The development of highly stable and optically tunable materials is crucial for next-generation patterning and anti-counterfeiting applications. This study presents a comprehensive investigation into the synthesis, structural dynamics, and optoelectronic properties of MA<sub>4</sub>Cu<sub>2</sub>X<sub>6</sub> (X = Cl, Br, Br/Cl) films fabricated via a three-step spin-coating technique. By leveraging halide anion engineering, the precise control over the coordination environment of Cu centers are achieved, as evidenced by synchrotron-based extended X-ray absorption fine structure analysis. Both their strong electron–phonon coupling and high exciton binding energies facilitate efficient self-trapped exciton emission. The photoluminescence emission is tailored from yellow to green and eventually to blue-green under ultraviolet excitation (254 nm). STE localization mitigates thermal quenching, achieving PLQYs >64%. Stability assessments indicate that mixed-halide compositions effectively suppress Cu+ oxidation, prolonging luminescence performance. Mixed halides enhance environmental stability, retaining >25% initial PLQY after 720 h in ambient conditions. Furthermore, the films demonstrate tunable diffraction properties in patterned photonic architectures, highlighting their potential for advanced optoelectronic devices. The films demonstrate high-resolution patterning capabilities via photolithography and screen printing, underscoring their potential for advanced optical security applications.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"151 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145314762","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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}
Wenjing Li, Xuxiang Ren, Mengye He, Feng Zhu, Donghang Yan
{"title":"High-Brightness Blue-Emission Crystalline Thin-Film OLEDs Based on Thick Solid-Solution Emitting Layer","authors":"Wenjing Li, Xuxiang Ren, Mengye He, Feng Zhu, Donghang Yan","doi":"10.1002/lpor.202502043","DOIUrl":"https://doi.org/10.1002/lpor.202502043","url":null,"abstract":"Organic light-emitting diode (OLED) urgently needs to improve brightness to meet the demands from diverse light scenes in intelligent era. Owing to their high mobility and superior thermal stability, crystalline organic semiconductors possess intrinsic advantages than present amorphous thin-film route to break through the bottleneck in OLED field and create high brightness devices. In this work, a deep-blue crystalline thin-film OLED (C-OLED) is reported, which can achieve high brightness at low driving voltage (4817 cd m<sup>−2</sup> @ 4 V). By integrating band-like crystalline emitting layer and controllable p/n doping, C-OLEDs demonstrate low turn-on voltage, low series-resistance joule-heat loss ratio, and high power efficiency. This technological advancement, built on weak epitaxy growth (WEG) method and crystalline organic solid-solutions (OSS) thin films, further validates the potential of the crystalline thin-film approach in optimizing OLED performance, and provides a new engineering solution for the development of high-performance organic light-emitting devices.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"70 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145314738","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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}
Yi Chen, Jianming Liao, Hongyi Zhu, Jun Luo, Xiaoliang Ma, Cheng Huang, Xiangang Luo
{"title":"Broadband Spatio-Temporal Modulated Metasurface for Multifunctional Radar Camouflage","authors":"Yi Chen, Jianming Liao, Hongyi Zhu, Jun Luo, Xiaoliang Ma, Cheng Huang, Xiangang Luo","doi":"10.1002/lpor.202501607","DOIUrl":"https://doi.org/10.1002/lpor.202501607","url":null,"abstract":"Conventional metasurface-based radar camouflage strategies are typically confined to single-function designs, limiting their adaptability to complex and dynamic electromagnetic (EM) environments. Inspired by recent advances in metasurface technology, a multifunctional radar camouflage strategy is proposed by leveraging a broadband fully-polarized spatio-temporal modulation (STM) metasurface, which can achieve range profile distortion, geometric features obfuscation, and radar cross-section reduction. Numerical simulations on satellite RadarSat-1 data demonstrate the proposed device disrupts the intra-pulse characteristics of echoes, thereby interfering with range profile imaging performance. Concurrently, the metasurface exhibits the capability to imitate high-resolution range profiles of complex targets through an innovative spatially partitioned modulation approach, achieving effective concealment of salient geometric features. Additionally, the implementation of an aperiodic modulation scheme enhances the spectral uniformity of the EM scattered waves, leading to a significant reduction in radar cross-section. Both simulation and measurement results have validated the great radar camouflage performance of the proposed STM metasurface, which can be developed for potential applications in radar jamming, secure wireless communication, and other pertinent fields.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"6 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145314761","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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":"Wide-Field, Artifact-Suppressed Lensless Microscopy Via Feature-Agnostic Autofocus and Multi-Target Separable Phase Retrieval","authors":"Ziyang Li, Xuyang Zhou, Sida Gao, Guancheng Huang, Ziling Qiao, Zhengyu Wu, Yutong Li, Shutian Liu, Zhengjun Liu","doi":"10.1002/lpor.202502003","DOIUrl":"https://doi.org/10.1002/lpor.202502003","url":null,"abstract":"Lensless on-chip microscopy (LOCM) is a promising technique for high-throughput, label-free imaging. However, its practical implementation remains constrained by sensitivity to variations in sample-sensor distance and cumulative noise during reconstruction. Existing autofocus and phase retrieval algorithms fail when dealing with non-planar samples and environmental disturbances. A wide-field, artifact-suppressed lensless imaging framework with natural support constraints is proposed, which integrates segment-dependent lateral registration, feature-agnostic autofocus, and multi-target separable phase retrieval. The proposed complex field correction scheme effectively addresses diffraction scale distortion and sensor trajectory deviations while mitigating the dependence of autofocus on sample-specific image features. The phase retrieval process is further enhanced via a multi-objective stochastic gradient descent algorithm, which enables effective noise separation without compromising resolution. Experimental validations with diverse samples demonstrate significant performance improvements, achieving pixel-super-resolved imaging with a full field of view (FOV) of 28.6 <span data-altimg=\"/cms/asset/d6ccbb5e-44c6-4c61-aea7-186ef0d4d69d/lpor70488-math-0001.png\"></span><math altimg=\"urn:x-wiley:18638880:media:lpor70488:lpor70488-math-0001\" display=\"inline\" location=\"graphic/lpor70488-math-0001.png\">\u0000<semantics>\u0000<msup>\u0000<mi>mm</mi>\u0000<mn>2</mn>\u0000</msup>\u0000${rm mm}^2$</annotation>\u0000</semantics></math>, an imaging depth exceeding 80 <span data-altimg=\"/cms/asset/2df1ba6f-cc2b-404e-b5ae-fafea58376f0/lpor70488-math-0002.png\"></span><math altimg=\"urn:x-wiley:18638880:media:lpor70488:lpor70488-math-0002\" display=\"inline\" location=\"graphic/lpor70488-math-0002.png\">\u0000<semantics>\u0000<mrow>\u0000<mi>μ</mi>\u0000<mi mathvariant=\"normal\">m</mi>\u0000</mrow>\u0000$umu{rm m}$</annotation>\u0000</semantics></math>, and a half-pitch resolution of 775 nm, corresponding to a 2.15-fold improvement in spatial resolution beyond the Nyquist–Shannon sampling limit. Furthermore, the proposed method demonstrates strong compatibility with coherent diffraction imaging (CDI), highlighting its broader applicability. The proposed method improves the versatility of lensless microscopy, eliminates reliance on stringent calibration, and provides a robust solution for high-throughput computational imaging.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"70 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145314760","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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}
Zichen Xi, Zengyu Cen, Dongyao Wang, Joseph G. Thomas, Bernadeta R. Srijanto, Ivan I. Kravchenko, Jiawei Zuo, Honghu Liu, Jun Ji, Yizheng Zhu, Yu Yao, Linbo Shao
{"title":"Room-Temperature Mid-Infrared Detection Using Metasurface-Absorber-Integrated Phononic Crystal Oscillator (Laser Photonics Rev. 19(20)/2025)","authors":"Zichen Xi, Zengyu Cen, Dongyao Wang, Joseph G. Thomas, Bernadeta R. Srijanto, Ivan I. Kravchenko, Jiawei Zuo, Honghu Liu, Jun Ji, Yizheng Zhu, Yu Yao, Linbo Shao","doi":"10.1002/lpor.70450","DOIUrl":"https://doi.org/10.1002/lpor.70450","url":null,"abstract":"<p><b>Phononic Crystal Mid-IR Detector</b></p><p>The cover shows a false-colored SEM image of a phononic-crystal-oscillator-based mid-infrared detector. The high-Q phononic crystal resonator achieves ultralow readout noise, resulting in highly sensitive, wide dynamic range mid-IR detection. The metasurface absorber array enables wavelength and polarization selective mid-infrared detection. For more details, see Research Article e00498 by Yu Yao, Linbo Shao and co-workers.\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"19 20","pages":""},"PeriodicalIF":10.0,"publicationDate":"2025-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/lpor.70450","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145317795","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Qianyun Zhang, Guibin Li, Liang Wu, Fan Yang, Zhen Yue, Chenglong Zheng, Qiankun Zhang, Chu Zhang, Quan Xu, Zhen Tian, Yan Zhang, Li Li, Jianquan Yao
{"title":"Subwavelength‐Resolution Terahertz Hologram with Arbitrary Curved Trajectory and Customized Polarization Structures","authors":"Qianyun Zhang, Guibin Li, Liang Wu, Fan Yang, Zhen Yue, Chenglong Zheng, Qiankun Zhang, Chu Zhang, Quan Xu, Zhen Tian, Yan Zhang, Li Li, Jianquan Yao","doi":"10.1002/lpor.202502169","DOIUrl":"https://doi.org/10.1002/lpor.202502169","url":null,"abstract":"Terahertz holography plays an important role in modern information photonics. However, conventional methods suffer from large pixel sizes due to the wavelength diffraction limit and a complex setup to generate holograms. Thanks to the unprecedented capability of metasurfaces in light control, here a metalens holography is proposed and experimentally demonstrated that can realize a subwavelength‐resolution hologram with both an arbitrary curved trajectory and customized polarization structures in the terahertz regime. The all‐dielectric multi‐foci metalenses, with the combination of geometric and propagation phase approaches, are exploited for fine control of the cross‐polarization and co‐polarization of the incident circularly polarized beam. By separate manipulation of the two orthogonally polarized wavefronts, the spatial position and polarization state of every focal point can be controlled independently. By using every focal point of the metalens as the pixel unit, the typical terahertz holograms of 2D ring, Archimedes spiral, and 3D knot curved trajectories with various customized polarization structures are performed with good agreement between the experimental and simulations. The meta‐holographic sub‐wavelength resolution surpasses the wavelength diffraction limitation imposed by conventional holography, holding the promising application for super‐resolution terahertz imaging and high‐definition communication.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"160 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145314582","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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":"Pulse-to-Pulse Stable Bright Laser-Sustained Plasma Source by Time-Domain Modulation (Laser Photonics Rev. 19(20)/2025)","authors":"Shichao Yang, He Hu, Zhaojiang Shi, Xia Yu","doi":"10.1002/lpor.70451","DOIUrl":"https://doi.org/10.1002/lpor.70451","url":null,"abstract":"<p><b>Periodic Laser-Sustained Plasma</b></p><p>A periodically evolving plasma is sustained by a temporally modulated laser. The defocused growth of plasma is inhibited by exploring the dynamics of plasma temperature and absorption properties. By establishing the quantitative theoretical model, the work reported in Research Article e00877 by Xia Yu and co-workers presents a pulse-to-pulse stable bright light source.\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"19 20","pages":""},"PeriodicalIF":10.0,"publicationDate":"2025-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/lpor.70451","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145317572","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}