物理与天体物理最新文献

{"title":"Assembling magneto-optical heterostructures for all-optical multi-functional devices","authors":"Jie Xu ,&nbsp;Yun You ,&nbsp;Sanshui Xiao ,&nbsp;Lujun Hong ,&nbsp;Yun Shen ,&nbsp;Kosmas L. Tsakmakidis ,&nbsp;Yamei Luo","doi":"10.1016/j.optlastec.2025.112858","DOIUrl":"10.1016/j.optlastec.2025.112858","url":null,"abstract":"<div><div>All-optical computing has recently emerged as a vibrant research field in response to the energy crisis and the growing demand for information processing. However, the efficiency of subwavelength-scale all-optical devices remains relatively low due to challenges such as back-scattering reflections and strict surface roughness. Furthermore, achieving multifunctionality through the reassembly of all-optical structures has thus far been rarely accomplished. One promising approach to address these issues is the utilization of one-way edge modes. This work proposes four types of deep-subwavelength (<span><math><mrow><mo>∼</mo><mn>1</mn><msup><mrow><mn>0</mn></mrow><mrow><mo>−</mo><mn>2</mn></mrow></msup><msub><mrow><mi>λ</mi></mrow><mrow><mn>0</mn></mrow></msub></mrow></math></span>, where <span><math><msub><mrow><mi>λ</mi></mrow><mrow><mn>0</mn></mrow></msub></math></span> is the wavelength in vacuum) all-optical functional devices based on yttrium iron garnet (YIG): a phase modulator, a filter, a splitter, and logic gates. These devices are based on robust one-way edge modes and/or index-near-zero (INZ) modes but do not require an external magnetic field, which can allow for flexible assembly. In particular, a phase modulation range spanning from <span><math><mrow><mo>−</mo><mi>π</mi></mrow></math></span> to <span><math><mi>π</mi></math></span>, a perfect filter that divides the input port’s one-way region into two output one-way regions with equal bandwidth, a multi-frequency splitter with an equal splitting ratio (e.g., 50/50), and self-consistent logic gates relying on INZ modes are investigated. Our findings may find applications in compact optical calculations and integrated optical circuits.</div></div>","PeriodicalId":19511,"journal":{"name":"Optics and Laser Technology","volume":"188 ","pages":"Article 112858"},"PeriodicalIF":4.6,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143747206","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 Superresolution in Single-Pixel Imaging with Generative Adversarial Networks","authors":"D. V. Babukhin,&nbsp;A. A. Reutov,&nbsp;D. V. Sych","doi":"10.3103/S1068335624601729","DOIUrl":"10.3103/S1068335624601729","url":null,"abstract":"<p>Imaging of physical objects using single-pixel cameras is an actively developing area at the intersection of optics and computational mathematics. Image restoration algorithms used in single-pixel cameras usually provide low resolution due to practical limitations on realistic computing resources. In this paper, we demonstrate an increase in the resolution of images obtained in single-pixel imaging using a generative adversarial neural network and discuss its application using the example of chest X-ray images from the MedMNIST dataset.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"52 1","pages":"14 - 21"},"PeriodicalIF":0.6,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143749173","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Radiative corrections to the direct detection of the Higgsino- and wino-like neutralino dark matter: Spin-dependent interactions","authors":"Subhadip Bisal, Arindam Chatterjee, Debottam Das, Syed Adil Pasha","doi":"10.1103/physrevd.111.083003","DOIUrl":"https://doi.org/10.1103/physrevd.111.083003","url":null,"abstract":"The lightest neutralino (χ&lt;/a:mi&gt;˜&lt;/a:mo&gt;&lt;/a:mover&gt;1&lt;/a:mn&gt;0&lt;/a:mn&gt;&lt;/a:msubsup&gt;&lt;/a:math&gt;) is a promising dark matter (DM) candidate in the R-parity conserving minimal supersymmetric standard model. In this work, we focus on dominantly Higgsino-like and wino-like &lt;e:math xmlns:e=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"&gt;&lt;e:msubsup&gt;&lt;e:mover accent=\"true\"&gt;&lt;e:mi&gt;χ&lt;/e:mi&gt;&lt;e:mo stretchy=\"false\"&gt;˜&lt;/e:mo&gt;&lt;/e:mover&gt;&lt;e:mn&gt;1&lt;/e:mn&gt;&lt;e:mn&gt;0&lt;/e:mn&gt;&lt;/e:msubsup&gt;&lt;/e:math&gt; DM, with small admixtures of gauginos and Higgsinos, respectively. In particular, we explore large one-loop corrections to the &lt;i:math xmlns:i=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"&gt;&lt;i:msubsup&gt;&lt;i:mover accent=\"true\"&gt;&lt;i:mi&gt;χ&lt;/i:mi&gt;&lt;i:mo stretchy=\"false\"&gt;˜&lt;/i:mo&gt;&lt;/i:mover&gt;&lt;i:mn&gt;1&lt;/i:mn&gt;&lt;i:mn&gt;0&lt;/i:mn&gt;&lt;/i:msubsup&gt;&lt;i:msubsup&gt;&lt;i:mover accent=\"true\"&gt;&lt;i:mi&gt;χ&lt;/i:mi&gt;&lt;i:mo stretchy=\"false\"&gt;˜&lt;/i:mo&gt;&lt;/i:mover&gt;&lt;i:mn&gt;1&lt;/i:mn&gt;&lt;i:mn&gt;0&lt;/i:mn&gt;&lt;/i:msubsup&gt;&lt;i:mi&gt;Z&lt;/i:mi&gt;&lt;/i:math&gt; vertex, which can significantly affect the estimation of the spin-dependent &lt;o:math xmlns:o=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"&gt;&lt;o:msubsup&gt;&lt;o:mover accent=\"true\"&gt;&lt;o:mi&gt;χ&lt;/o:mi&gt;&lt;o:mo stretchy=\"false\"&gt;˜&lt;/o:mo&gt;&lt;/o:mover&gt;&lt;o:mn&gt;1&lt;/o:mn&gt;&lt;o:mn&gt;0&lt;/o:mn&gt;&lt;/o:msubsup&gt;&lt;/o:math&gt;-nucleon scattering cross section in the regions where such DM candidates are viable. We have used the on-shell renormalization scheme to estimate the relevant counterterm contributions. In the parameter region where &lt;s:math xmlns:s=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"&gt;&lt;s:msubsup&gt;&lt;s:mover accent=\"true\"&gt;&lt;s:mi&gt;χ&lt;/s:mi&gt;&lt;s:mo stretchy=\"false\"&gt;˜&lt;/s:mo&gt;&lt;/s:mover&gt;&lt;s:mn&gt;1&lt;/s:mn&gt;&lt;s:mn&gt;0&lt;/s:mn&gt;&lt;/s:msubsup&gt;&lt;/s:math&gt; is dominantly Higgsino-like, the radiative corrections (including the contributions from the respective counterterms) are substantial and can enhance the &lt;w:math xmlns:w=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"&gt;&lt;w:msubsup&gt;&lt;w:mover accent=\"true\"&gt;&lt;w:mi&gt;χ&lt;/w:mi&gt;&lt;w:mo stretchy=\"false\"&gt;˜&lt;/w:mo&gt;&lt;/w:mover&gt;&lt;w:mn&gt;1&lt;/w:mn&gt;&lt;w:mn&gt;0&lt;/w:mn&gt;&lt;/w:msubsup&gt;&lt;w:msubsup&gt;&lt;w:mover accent=\"true\"&gt;&lt;w:mi&gt;χ&lt;/w:mi&gt;&lt;w:mo stretchy=\"false\"&gt;˜&lt;/w:mo&gt;&lt;/w:mover&gt;&lt;w:mn&gt;1&lt;/w:mn&gt;&lt;w:mn&gt;0&lt;/w:mn&gt;&lt;/w:msubsup&gt;&lt;w:mi&gt;Z&lt;/w:mi&gt;&lt;/w:math&gt; vertex by up to &lt;cb:math xmlns:cb=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"&gt;&lt;cb:mo&gt;∼&lt;/cb:mo&gt;&lt;cb:mn&gt;120&lt;/cb:mn&gt;&lt;cb:mo&gt;%&lt;/cb:mo&gt;&lt;/cb:math&gt; for the benchmark scenarios we have considered. Further, for an almost pure wino-like &lt;eb:math xmlns:eb=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"&gt;&lt;eb:msubsup&gt;&lt;eb:mover accent=\"true\"&gt;&lt;eb:mi&gt;χ&lt;/eb:mi&gt;&lt;eb:mo stretchy=\"false\"&gt;˜&lt;/eb:mo&gt;&lt;/eb:mover&gt;&lt;eb:mn&gt;1&lt;/eb:mn&gt;&lt;eb:mn&gt;0&lt;/eb:mn&gt;&lt;/eb:msubsup&gt;&lt;/eb:math&gt;, the increment in the &lt;ib:math xmlns:ib=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"&gt;&lt;ib:msubsup&gt;&lt;ib:mover accent=\"true\"&gt;&lt;ib:mi&gt;χ&lt;/ib:mi&gt;&lt;ib:mo stretchy=\"false\"&gt;˜&lt;/ib:mo&gt;&lt;/ib:mover&gt;&lt;ib:mn&gt;1&lt;/ib:mn&gt;&lt;ib:mn&gt;0&lt;/ib:mn&gt;&lt;/ib:msubsup&gt;&lt;ib:msubsup&gt;&lt;ib:mover accent=\"true\"&gt;&lt;ib:mi&gt;χ&lt;/ib:mi&gt;&lt;ib:mo stretchy=\"false\"&gt;˜&lt;/ib:mo&gt;&lt;/ib:mover&gt;&lt;ib:mn&gt;1&lt;/ib:mn&gt;&lt;ib:mn&gt;0&lt;/ib:mn&gt;&lt;/ib:msubsu","PeriodicalId":20167,"journal":{"name":"Physical Review D","volume":"74 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143757982","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Online monitoring of surface forming quality in laser-arc hybrid butt welding with uneven joint gaps based on arc signal diagnosis","authors":"Kaiqin Xu,&nbsp;Leshi Shu,&nbsp;Ping Jiang,&nbsp;Yuan Wang,&nbsp;Nian Zhou","doi":"10.1016/j.optlastec.2025.112850","DOIUrl":"10.1016/j.optlastec.2025.112850","url":null,"abstract":"<div><div>High-power laser-arc hybrid welding is commonly employed in the welding of medium-thickness steel. In full-penetration butt welding, butt joint gaps are particularly prevalent, especially as plate thickness increases, which in turn tend to exacerbate underfill and surface collapse defects. Consequently, it is essential to monitor the surface collapse defects during the welding process for medium-thickness steel. In this paper, a novel method is proposed to monitor surface collapse defects for laser-arc hybrid welding of medium-thickness steel with uneven joint gaps based on voltage signal diagnosis and machine learning. Firstly, the interrelation mechanism between the butt joint gap, surface collapse, and the voltage signal is analyzed with high-speed images, which is adopted to guide the time/frequency feature extraction in the proposed method. Then, it is found that the changes in peak and base voltages, along with the instantaneous frequency of arc pulse captured through variational mode decomposition (VMD), reflect the surface collapse defect, significantly affected by the butt gap. On this basis, a back propagation neural network (BPNN) is constructed to identify the extracted features, realizing the monitoring of the surface collapse defects with a precision of 94.24%.</div></div>","PeriodicalId":19511,"journal":{"name":"Optics and Laser Technology","volume":"188 ","pages":"Article 112850"},"PeriodicalIF":4.6,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143747095","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"MERFusion: A multiscale edge-preserving filter combined with Retinex enhancement for infrared and visible image fusion","authors":"Chenxuan Yang ,&nbsp;Yunan He ,&nbsp;Ce Sun ,&nbsp;Qun Hao ,&nbsp;Jie Cao","doi":"10.1016/j.optlastec.2025.112823","DOIUrl":"10.1016/j.optlastec.2025.112823","url":null,"abstract":"<div><div>The limitations of a single sensor stem from its equipment’s optical capabilities, which prevent it from capturing diverse data on targets across multiple dimensions, thus enabling sophisticated vision tasks through image fusion. Currently, mainstream fusion methods suffer from significant loss of intricate details and the introduction of artifacts during low-light image fusion, resulting in unsatisfactory visual effects. To address these issues, this paper proposes a multiscale edge-preserving filter combined with Retinex enhancement for infrared and visible image fusion. The method incorporates low-light enhancement technology into the image fusion process, effectively tackling the challenges associated with low-light image fusion. Initially, we propose a weighted Retinex model for visible image enhancement, which is designed to efficiently incorporate details, texture, and brightness information in the darker regions of the source image. Furthermore, the proposed filter, benefiting from multiscale segmentation and edge preservation, decomposes the image into three distinct layers: base, infrared, and visible. Additionally, the designed gradient saliency fusion rule is adept at preserving the salient characteristics of infrared targets. Finally, by refining and integrating the detail layer with the base layer, we achieve the final fused image. Experimental findings indicate the superiority of this paper’s method over current state-of-the-art methods.</div></div>","PeriodicalId":19511,"journal":{"name":"Optics and Laser Technology","volume":"188 ","pages":"Article 112823"},"PeriodicalIF":4.6,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143747203","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Cumulants and Large Deviations for the Linear Statistics of the One-Dimensional Trapped Riesz Gas","authors":"Pierre Le Doussal,&nbsp;Grégory Schehr","doi":"10.1007/s10955-025-03429-6","DOIUrl":"10.1007/s10955-025-03429-6","url":null,"abstract":"<div><p>We consider the classical trapped Riesz gas, i.e., <i>N</i> particles at positions <span>(x_i)</span> in one dimension with a repulsive power law interacting potential <span>(propto 1/|x_i-x_j|^{k})</span>, with <span>(k&gt;-2)</span>, in an external confining potential of the form <span>(V(x) sim |x|^n)</span>. We focus on the equilibrium Gibbs state of the gas, for which the density has a finite support <span>([-ell _0/2,ell _0/2])</span>. We study the fluctuations of the linear statistics <span>({{mathcal {L}}}_N = sum _{i=1}^N f(x_i))</span> in the large <i>N</i> limit for smooth functions <i>f</i>(<i>x</i>). We obtain analytic formulae for the cumulants of <span>({{mathcal {L}}}_N)</span> for general <span>(k&gt;-2)</span>. For long range interactions, i.e. <span>(k&lt;1)</span>, which include the log-gas (<span>(k rightarrow 0)</span>) and the Coulomb gas (<span>(k =-1)</span>) these are obtained for monomials <span>(f(x)= |x|^m)</span>. For short range interactions, i.e. <span>(k&gt;1)</span>, which include the Calogero–Moser model, i.e. <span>(k=2)</span>, we compute the third cumulant of <span>({{mathcal {L}}}_N)</span> for general <i>f</i>(<i>x</i>) and arbitrary cumulants for monomials <span>(f(x)= |x|^m)</span>. We also obtain the large deviation form of the probability distribution of <span>({{mathcal {L}}}_N)</span>, which exhibits an “evaporation transition” where the fluctuation of <span>({{mathcal {L}}}_N)</span> is dominated by the one of the largest <span>(x_i)</span>. In addition, in the short range case, we extend our results to a (non-smooth) indicator function <i>f</i>(<i>x</i>), obtaining thereby the higher order cumulants for the full counting statistics of the number of particles in an interval <span>([-L/2,L/2])</span>. We show in particular that they exhibit an interesting scaling form as <i>L</i>/2 approaches the edge of the gas <span>(L/ell _0 rightarrow 1)</span>, which we relate to the large deviations of the emptiness probability of the complementary interval on the real line.</p></div>","PeriodicalId":667,"journal":{"name":"Journal of Statistical Physics","volume":"192 4","pages":""},"PeriodicalIF":1.3,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143749229","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-party authenticated quantum key agreement protocol based on d-level single-particle states","authors":"Mengqing Yang,&nbsp;Hao Cao,&nbsp;Zepeng Zhuo,&nbsp;Binbin Gan,&nbsp;Chunxia Wang","doi":"10.1007/s11128-025-04723-8","DOIUrl":"10.1007/s11128-025-04723-8","url":null,"abstract":"<div><p>Identity authentication plays a crucial role in quantum key negotiation protocols, ensuring the authenticity and reliability of each other’s identities during the key negotiation process. Based on this requirement, using a quadratic hash function over a finite field, this paper proposes a multi-party quantum key negotiation protocol that can achieve identity authentication, allowing any number of participants to negotiate shared keys, and all participants have equal contributions to the final key. In the protocol, high-dimensional single-particle states are used as quantum resources, and participants encrypt their private keys with system keys based on location information. The encryption results are encoded in a sequence of quantum states and transmitted in a circular form, improving the efficiency of the protocol. Security analysis shows that this scheme has the ability to resist external and internal attacks.</p></div>","PeriodicalId":746,"journal":{"name":"Quantum Information Processing","volume":"24 4","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143749250","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":"Prediction of Room Temperature Electric Field Reversal of Magnetization in the Family of A4B3O9 Layered Oxides","authors":"Urmimala Dey, Emma E. McCabe, Jorge Íñiguez-González, Nicholas C. Bristowe","doi":"10.1103/physrevlett.134.136801","DOIUrl":"https://doi.org/10.1103/physrevlett.134.136801","url":null,"abstract":"The promise of a strong magnetoelectric coupling in a multiferroic material is not only of fundamental interest, but also forms the basis of next generation memory devices where the direction of magnetization can be reversed by an external electric field. Using group-theory led first-principles calculations, we have identified a hitherto unknown polar phase of the A</a:mi>4</a:mn></a:msub>B</a:mi>3</a:mn></a:msub>O</a:mi>9</a:mn></a:msub></a:math> layered oxides, where the polar mode couples to the magnetic modes through a rare <d:math xmlns:d=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><d:mi mathvariant=\"normal\">Γ</d:mi></d:math>-point magnetoelectric-multiferroic coupling scheme such that the net magnetization can be directly reversed by an electric field switching of the polar mode. Furthermore, in agreement with previous experimental observations, we predict room temperature magnetism in <g:math xmlns:g=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><g:msub><g:mi>A</g:mi><g:mn>4</g:mn></g:msub><g:msub><g:mi>B</g:mi><g:mn>3</g:mn></g:msub><g:msub><g:mi mathvariant=\"normal\">O</g:mi><g:mn>9</g:mn></g:msub></g:math> oxides that indicates the promising practical applications of these compounds in the next generation memory devices. <jats:supplementary-material> <jats:copyright-statement>Published by the American Physical Society</jats:copyright-statement> <jats:copyright-year>2025</jats:copyright-year> </jats:permissions> </jats:supplementary-material>","PeriodicalId":20069,"journal":{"name":"Physical review letters","volume":"12 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143757784","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":"All‐Glass Nanohole Metalens by Non‐Diffracting Laser Lithography","authors":"Kang Xu, Mandong Zheng, Lingyu Huang, Li Yao, Jiantao Chen, Shaolin Xu","doi":"10.1002/lpor.202402006","DOIUrl":"https://doi.org/10.1002/lpor.202402006","url":null,"abstract":"Traditional nanopillar metalenses are usually confronted with problems of limited phase delay due to restricted aspect ratio and duty cycle of structural units. A new design and ultrafast laser fabrication method of an all‐glass nanohole metasurface is proposed. High‐aspect‐ratio nanoholes with subwavelength periods, tunable depths, and fixed duty cycle function as phase shift units, realizing idealized linear 2π phase delay to support great light modulation performance. A non‐diffracting laser lithography approach is developed to fabricate nanohole arrays, using a unique Bessel beam modulated by a reversed‐axicon phase diagram to guarantee hole diameter consistency along the depth. Combining with thermal annealing and chemical etching, surface and subsurface damage‐free nanohole arrays are produced with periods down to 800 and precisely controlled depths over 10 µm. The capability helps realize the rapid fabrication of a high‐performance all‐glass nanohole metalens with ≈97% modulation efficiency at 1.55 µm. A large 2 cm‐diameter metalens and diverse optical devices like axicon, vortex wave plate, and blazed grating are also demonstrated. The study provides a new avenue of all‐glass metalens, and makes custom metalens more economical and easily accessible.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"38 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143757798","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":"Flexible Composite Fluorescent Optical Fiber Sensor Embedded with Li2HfO3:Er3+/Yb3+ for Physiological Temperature Monitoring","authors":"Qian Zhu, Yongsheng Sun, Yuzhen Wang, Zhiguo Xia","doi":"10.1002/lpor.202402225","DOIUrl":"https://doi.org/10.1002/lpor.202402225","url":null,"abstract":"Flexible temperature sensors are crucial for monitoring physiological parameters in smart human wearable devices, however, there is a challenge to realize reproducible, sensitive, real-time, and in-situ temperature sensing simultaneously. Herein, Er³⁺/Yb³⁺ co-doped Li₂HfO₃ phosphor thermometries have been designed and prepared, which demonstrate bright upconversion luminescence and precise temperature sensing capabilities. The temperature sensing characteristics of thermally coupled energy states in Li₂HfO₃:Er³⁺, Yb³⁺ are explored based on the fluorescence intensity ratio technique, with a maximum relative sensitivity of 0.875% K⁻¹ and a temperature uncertainty of 0.017 K at 300 K. In addition, flexible composite fluorescent optical fiber temperature sensors have been fabricated, and the fiber with a double-cladding structure is employed to monitor human body temperature and airflow heat with satisfying performances. This work not only provides a promising rare earth phosphor thermometry but also opens a new avenue for the development of flexible optical fiber temperature sensors for health management.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"289 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143758113","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}