{"title":"Infrared Thermophotonics: Theoretical Benchmarking of Ni–Al Superalloys","authors":"Thien Duc Ngo, Hai Dang Ngo, Toan Phuoc Tran, Hiroshi Harada, Tadaaki Nagao","doi":"10.1002/adpr.202400093","DOIUrl":"10.1002/adpr.202400093","url":null,"abstract":"<p>Ni–Al intermetallic compounds are highly stable, heat-resistant superalloys that have been studied as possible materials for automotive and aerospace applications. However, no reports of their thermophotonic applications, such as high-temperature IR emitters, have been reported. Herein, an integrated approach that combines a theoretical investigation of the optical properties of Ni–Al compounds with an optimized geometrical microdevice design is reported. Benchmarking of the optical properties and device performance revealed that NiAl exhibited the best optical properties among the surveyed families of Ni–Al intermetallic compounds, comparable to those of conventional plasmonic materials in the IR region. Additionally, the NiAl-based microdevices exhibited an excellent quality of 692, making them promising high-temperature plasmonic superalloys for IR thermophotonic applications. In addition, the experimental dielectric function in the IR region was consistent with the simulated value. Simultaneously, various designs of plasmonic metamaterial structures are modeled successfully based on NiAl, demonstrating the good performance of this material as a perfect spectroscopic absorber and emitter operating in the IR region.</p>","PeriodicalId":7263,"journal":{"name":"Advanced Photonics Research","volume":"6 4","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adpr.202400093","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143762170","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":"Biphoton Waveforms of Photon Pair from Velocity-Selective Atoms in a Doppler-Broadened Atomic Ensemble","authors":"Hansol Jeong, Heewoo Kim, Danbi Kim, Han Seb Moon","doi":"10.1002/adpr.202400147","DOIUrl":"10.1002/adpr.202400147","url":null,"abstract":"<p>Telecom band photonic quantum states generated from atomic systems are critical quantum resources for long-distance and scalable quantum communication networks. Here, the beat phenomenon in the autocorrelation function of the telecom-wavelength photon due to the velocity-selective classes of the atoms in a Doppler-broadened atomic ensemble of the cascade-type 5S<sub>1/2</sub>–5P<sub>3/2</sub>–4D<sub>5/2</sub> transition of <sup>87</sup>Rb is reported. Although the signal (1529 nm) and idler (780 nm) photons are emitted from a single-atomic ensemble, the autocorrelation functions of the signal and idler photons exhibit significantly different features, with temporal widths of 7 and 0.13 ns, respectively. Furthermore, the biphoton spectral waveform of the telecom band photon pair is measured using a stimulated emission method. The biphoton waveforms of the telecom-wavelength biphoton source demonstrate good agreement with the magnitude of the Fourier components of the measured biphoton temporal and spectral waveforms.</p>","PeriodicalId":7263,"journal":{"name":"Advanced Photonics Research","volume":"6 6","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adpr.202400147","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144264403","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}
Wei Jia, Miguel A. Gomez, Steve Blair, Michael A. Scarpulla, Berardi Sensale-Rodriguez
{"title":"Low-Loss Parowax-Imprinted Diffractive Neural Network for Orbital Angular Momentum Terahertz Holographic Imaging","authors":"Wei Jia, Miguel A. Gomez, Steve Blair, Michael A. Scarpulla, Berardi Sensale-Rodriguez","doi":"10.1002/adpr.202400169","DOIUrl":"10.1002/adpr.202400169","url":null,"abstract":"<p>\u0000The helical phase front of orbital angular momentum (OAM) waves offer additional multiplexing degree-of-freedom to increase the capacity of communication systems in the terahertz domain, which in turn can significantly benefit forthcoming high-speed wireless sixth-generation communication networks. This work introduces a diffractive neural network approach for recognizing the topological charge of OAM waves and their superposition. Moreover, it is shown that the diffractive network can further enable mathematical operations through the topological charges (TCs) of the superposed OAM waves. The diffractive neural networks (DNN) are fabricated through an imprinting technique with low-loss parowax material. To validate the feasibility of this general approach, experimental demonstrations are conducted, which show that the low-loss parowax DNN effectively detects the TCs of the OAM waves and display them in a numerical format.</p>","PeriodicalId":7263,"journal":{"name":"Advanced Photonics Research","volume":"6 6","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adpr.202400169","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144264388","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}
Ali Barkhordari, Şemsettin Altındal, Süleyman Özçelik, Hamid Reza Mashayekhi, Mustafa Muradov, Yashar Azizian-Kalandaragh
{"title":"Enhancement of the Optoelectric and Photovoltaic Responses of Al/PVP:ZnTiO3/p-Si Structure by Graphene Nanoparticles","authors":"Ali Barkhordari, Şemsettin Altındal, Süleyman Özçelik, Hamid Reza Mashayekhi, Mustafa Muradov, Yashar Azizian-Kalandaragh","doi":"10.1002/adpr.202400171","DOIUrl":"10.1002/adpr.202400171","url":null,"abstract":"<p>\u0000In this work, the optoelectronic response of Al/p-Si photodiodes (PDs) with and without (PVP:Gr-ZnTiO<sub>3</sub>) composite interlayer is investigated in dark and under various light intensities (<i>P</i>). The manufacturing/surface preparation is thoroughly explained. The electric/optic parameters including leakage/saturation current (<i>I</i><sub>0</sub>), series/shunt resistances (<i>R</i><sub>s</sub>/<i>R</i><sub>sh</sub>), barrier height (BH), ideality factor (<i>n</i>), energy-dependent density distribution of surface/interface levels (<i>N</i><sub>ss</sub>), photoinduced current (<i>I</i><sub>ph</sub>), photosensitivity (<i>S</i>), optical responsivity (<i>R</i>), and specific detectivity (<i>D</i>*) are calculated from the <i>I–V</i> data in dark and under illumination intensities. Raising the light intensity results in a drop in Φ<sub>B0</sub> and <i>R</i><sub>s</sub> quantities while increasing the <i>I</i><sub>0</sub> and <i>n</i> values due to photogenerated electron–hole pairs under illumination. The Φ<sub>B0</sub>-<i>P</i> and Φ<sub>B0</sub>-<i>n</i> graphs are used to calculate the illumination factor and the Φ<sub>B0</sub> in the ideal form. An acceptable linear behavior appears in the <i>I</i><sub>ph</sub>–<i>P</i> profiles for the negative-bias region, where the illumination dependence of photocurrent is explored. It is found that the (PVP:Gr-ZnTiO<sub>3</sub>) interlayer leads to an increase in the <i>S</i>, <i>R</i>, and <i>D</i><sup><i>*</i></sup> values of the PD to ≈1200, 400 mA W<sup>−1</sup>, and 1.14 × 10<sup>14</sup> Jones, respectively. These results show that the used (PVP:ZnTiO<sub>3</sub>) interlayer displays an excellent photoresponse and may effectively replace conventional PDs for applications in optoelectronic and photovoltaic devices.</p>","PeriodicalId":7263,"journal":{"name":"Advanced Photonics Research","volume":"6 6","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adpr.202400171","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144264586","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":"Mirror Coating Research and Developments for Current and Future Gravitational-Wave Detectors","authors":"Alex Amato, Michele Magnozzi, Janis Wöhler","doi":"10.1002/adpr.202400117","DOIUrl":"10.1002/adpr.202400117","url":null,"abstract":"<p>In current and future gravitational-wave detectors, thermal noise from mirror coatings limits the sensitivity of the detectors. To reduce the coating thermal noise, coatings with excellent optical and mechanical properties are needed. In this review, an overview of postdeposition coating treatments and the latest worldwide research activities on coatings with low mechanical loss and low optical absorption are reported. A brief overview of coating design optimization, including innovative solutions such as multimaterial coatings and nanolayers, is also discussed.</p>","PeriodicalId":7263,"journal":{"name":"Advanced Photonics Research","volume":"6 4","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adpr.202400117","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143761967","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}
Mátyás Hunyadi, Attila Csík, Cintia Hajdu, Csaba Janáky, István Rajta, Gergely F. Samu, Lóránt Csige
{"title":"Scintillation Response of 0D Cs3Cu2I5 Thin Layers to Light- and Heavy-Ion Irradiation","authors":"Mátyás Hunyadi, Attila Csík, Cintia Hajdu, Csaba Janáky, István Rajta, Gergely F. Samu, Lóránt Csige","doi":"10.1002/adpr.202400217","DOIUrl":"10.1002/adpr.202400217","url":null,"abstract":"<p>Low-dimensional copper halides with perovskite–analogue structure are a rapidly growing material family for light-emitting and X-ray screening devices. Among them Cs<sub>3</sub>Cu<sub>2</sub>I<sub>5</sub> exhibits exceptional optoelectronic properties (large Stokes shift, high emission yield), due to the strong confinement effect of its 0D structure. However, its radioluminescence response to energetic ions has only marginally been explored and to heavy ions fully ignored due to the detrimental effect of luminescence quenching. Herein, the scintillation response of Cs<sub>3</sub>Cu<sub>2</sub>I<sub>5</sub> thin layers to ions in a wide range of atomic mass and ionization density, as well as to electrons using the Compton-coincidence technique, is investigated. The photon yield, linearity, and energy resolution are investigated as key parameters of the spectroscopic performance. Different semiempirical quenching models are used to better understand the relationship between the luminescence yield and the ionization density. The spectroscopic capability of polycrystalline Cs<sub>3</sub>Cu<sub>2</sub>I<sub>5</sub> thin films is found on par with that of single-crystal CsI:Tl to detect heavy ions. This makes easily processable thin-film copper halides an attractive addition to the scintillator landscape.</p>","PeriodicalId":7263,"journal":{"name":"Advanced Photonics Research","volume":"6 6","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adpr.202400217","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144264384","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":"Photochromic Organic–Inorganic Material for Focusable Adaptive Lenses Fabrication","authors":"Giorgia Franchin, Veronica Torresan, Alessandro Gandin, Rossella Castagna, Chiara Bertarelli, Stefano Bonora, Giovanna Brusatin","doi":"10.1002/adpr.202400160","DOIUrl":"10.1002/adpr.202400160","url":null,"abstract":"<p>Adaptive optics (AO) has transformed the understanding of biology and medicine by providing unprecedented access to their fundamental elements. This technology leverages techniques and strategies originally developed in astronomy to measure and correct optical aberrations. Herein, the development of a novel photo-responsive optical material for AO applications is presented. The material consists of a photochromic film of a zirconia-based hybrid organic–inorganic (HOI) matrix that incorporates up to 20% dithienylethene molecules. The exceptional photochromic properties and thermal stability of the photochromic component, combined with the remarkable optical properties, adjustable thickness, and high dye-loading capacity of the HOI sol–gel matrix, enable the creation of a system optimized for refractive index modulation (Δ<i>n</i>) under light exposure. Comprehensive evaluations of the photochromic material are conducted, analyzing changes in optical properties in response to varying light intensity and exposure time. Additionally, prototypes of focusable adaptive lenses specifically designed for operation in the near-infrared spectrum are engineered, achieving a significant Δ<i>n</i> of 0.0314, effectively minimizing efficiency losses attributable to material absorption.</p>","PeriodicalId":7263,"journal":{"name":"Advanced Photonics Research","volume":"6 6","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adpr.202400160","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144264358","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}
Duo Deng, Xing Liu, Zixin Xu, Zhenjun Yang, Yan Li
{"title":"Precision Construction of Chiral Optical Fields with Nine Controllable Degrees of Freedom","authors":"Duo Deng, Xing Liu, Zixin Xu, Zhenjun Yang, Yan Li","doi":"10.1002/adpr.202400230","DOIUrl":"10.1002/adpr.202400230","url":null,"abstract":"<p>\u0000Recently, chiral optical fields (COFs) have garnered significant attention due to their multiple controllable degrees of freedom (DOFs), enabling applications in diverse areas such as optical tweezers, manufacturing, and holographic encryption. However, existing schemes fail to achieve precise control over certain aspects, particularly the fine-tuning of sidelobes, including their overall shape and structural characteristics, which limits their practical applications. Herein, an approach to achieve fine sculpting of COFs using a modular multilayer annular phase plate (MMAPP) is proposed. By adjusting the number and mode of the annular spiral phase in the two modules of the MMAPP, as well as the axicon phase, the high-order cross phase, and the low-order cross phase, the experimental manipulation of nine DOFs of COFs is demonstrated, including the chirality, size, sidelobe number, sidelobe distortion degree, sidelobe segment length, sidelobe segment rotation direction, overall polygonal shape, ellipticity, and rotation angle. The proposed method enhances the modulation capabilities of COFs and gives rise to potential applications in particle manipulation and information encryption.</p>","PeriodicalId":7263,"journal":{"name":"Advanced Photonics Research","volume":"6 6","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adpr.202400230","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144264584","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":"Self-Powered Broadband Computational Imaging Based on CdS/Ge 2D/3D Type-I Heterojunction Photodetectors","authors":"Xiaodi Luo, Jiahao Li, Zixin He, Xiaofei Ma, Qinggang Qin, Wei Chen, Zhengyu Xu, Zhifan Qiu, Yingjian Wang, Liang Li, Dongfeng Shi","doi":"10.1002/adpr.202570007","DOIUrl":"10.1002/adpr.202570007","url":null,"abstract":"<p><b>Type-I Heterojunction Photodetectors</b>\u0000 </p><p>In article number 2400190, Yingjian Wang, Liang Li, Dongfeng Shi, and co-workers present type I van der Waals heterojunction photodetectors that demonstrate exceptional optoelectronic performance, characterized by a broadband spectral response spanning from ultraviolet to near-infrared regions, ultrafast response kinetics, and superior photoresponsivity. These advanced photodetectors, when synergistically combined with state-of-the-art Hadamard single-pixel imaging technology, enable high-fidelity image reconstruction across extensive spectral ranges and under challenging environmental conditions.\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 3","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adpr.202570007","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143530353","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}
Jacob J. Young, Benjamin G. Page, Arturo I. Hernandez-Serrano, Joseph Hardwicke, Emma Pickwell-MacPherson
{"title":"In vivo Terahertz Sensing of Skin Cancer Patients","authors":"Jacob J. Young, Benjamin G. Page, Arturo I. Hernandez-Serrano, Joseph Hardwicke, Emma Pickwell-MacPherson","doi":"10.1002/adpr.202400195","DOIUrl":"10.1002/adpr.202400195","url":null,"abstract":"<p>The first in vivo study of skin cancer patients using a handheld terahertz (THz) scanner is conducted in a clinical environment. By devising a patient- normalized response function, it has been able to obtain clear difference between the THz measurements of healthy and cancerous skin. However, due to the variety of lesions and skin locations measured, the contrast is not consistent between patients and more work is needed to understand the contrast mechanism. The transient behavior of the THz response is also isolated during a measurement, showing that the surface of the skin compresses during the in vivo measurement. Understanding this response has enabled the development of the patient-invariant parameter that is formulated in this work and may potentially serve to simplify measurement protocols in future studies.</p>","PeriodicalId":7263,"journal":{"name":"Advanced Photonics Research","volume":"6 6","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adpr.202400195","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144264624","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}