Optics and Lasers in Engineering最新文献

{"title":"Enhanced focusing and imaging with super high-order Hilbert zone plates","authors":"Jeeban Bastola ,&nbsp;Shaohua Tao","doi":"10.1016/j.optlaseng.2025.109112","DOIUrl":"10.1016/j.optlaseng.2025.109112","url":null,"abstract":"<div><div>Zone plates have emerged as a viable alternative to conventional refractive lenses due to their lightweight, compact design and ease of fabrication. However, achieving high-intensity single focus with enhanced imaging resolution remains a challenge. In this study, we proposed the super high-order Hilbert zone plates (HZPs) based on the space-filling Hilbert curve to address these limitations. Our comprehensive simulations and experimental validations demonstrated that the super high-order HZPs concentrate most of the incident light into a single focus, with a tiny focus spot, thus offering enhanced imaging resolution. Through a detailed comparison with the binarized geometric lenses, we illustrated the superior imaging capabilities of the super high-order HZPs. By redefining the traditional roles of zone plates, the super high-order HZPs emerge with the potential to replace binarized geometric lenses. The proposed super high-order HZPs hold significant promise for applications in integrated optical systems, optical imaging, medical imaging, photolithography, and precise scientific measurement.</div></div>","PeriodicalId":49719,"journal":{"name":"Optics and Lasers in Engineering","volume":"193 ","pages":"Article 109112"},"PeriodicalIF":3.5,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144147908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fabrication and analysis of through-glass vias for glass-based electronic packaging using an ultrashort pulsed laser","authors":"Daniel Franz ,&nbsp;David Schuster ,&nbsp;Simon Schwarz ,&nbsp;Stefan Rung ,&nbsp;Cemal Esen ,&nbsp;Ralf Hellmann","doi":"10.1016/j.optlaseng.2025.109106","DOIUrl":"10.1016/j.optlaseng.2025.109106","url":null,"abstract":"<div><div>We report on a comprehensive study of through-glass via (TGV) drilling for glass-based core packaging using a multi-path scanning strategy with a rotating start point and an ultrashort pulsed laser emitting in the green spectral range. In order to optimize the laser drilling quality in a 200 μm thick Borofloat (BF) 33 glass substrate, processing parameters such as laser pulse duration, laser pulse energy, number of passes and TGV hole diameter are studied in detail. After laser drilling, through-holes are evaluated for the hole diameter, taper angle and crack formation using optical microscopy and scanning electron microscopy. Although small taper angles down to 6 ± 0.3° are obtained using a femtosecond pulse duration, microcracks and backside ablation of the glass substrate are observed. Using a laser pulse duration of 5 ps, a laser pulse energy of 25 μJ and 600 passes for TGV fabrication with a hole diameter of 125 μm, a minimum taper angle of down to 7.3 ± 0.1° is obtained without the formation of cracks. Minimum hole pitches of 180 μm are realized for a hole diameter of 125 μm. To meet industrial requirements for temperature resistance in electronics manufacturing, laser-drilled TGV arrays are tested for thermal sensitivity using a furnace for both thermal cycling and shock at temperatures up to 950°. After thermal tests, no crack formation is observed for a minimum hole pitch of 180 μm and maximal laser-induced stresses is reduced by 37.4% down to 8.2 MPa on average, demonstrating the great potential of the applied scanning strategy for glass-based core packaging.</div></div>","PeriodicalId":49719,"journal":{"name":"Optics and Lasers in Engineering","volume":"193 ","pages":"Article 109106"},"PeriodicalIF":3.5,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144147909","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Metal-organic frameworks/graphene oxide synergistic enhanced optical fiber SPR sensor for ultra-trace lead ions detection","authors":"Lixia Li ,&nbsp;Yurui Huang ,&nbsp;Siyuan Wu ,&nbsp;Mingdeng Jin ,&nbsp;Jiabin Zhao ,&nbsp;Feiyou Liu ,&nbsp;Yiyang Shen ,&nbsp;Ning Feng ,&nbsp;Yufang Liu","doi":"10.1016/j.optlaseng.2025.109115","DOIUrl":"10.1016/j.optlaseng.2025.109115","url":null,"abstract":"<div><div>The detection of lead ions (Pb²⁺) is critical due to its harmful effects to human health, even in trace amounts. In this paper, a novel optical fiber surface plasmon resonance (SPR) sensor for ultra-trace detection of Pb²⁺ is proposed. The sensing probe consists of a metal-organic frameworks (MOF)/graphene oxide (GO) composite sensitized layer modified on the gold (Au)-based optical fiber. In the presence of Pb²⁺, DNAzyme specifically recognizes Pb²⁺ and cleaves the substrate strand, resulting in the detachment of gold nanoparticles (AuNPs) conjugated to the substrate from the sensing region, which reduces the surface refractive index (RI) and thus causes a spectral blue shift. The optical fiber SPR sensor exhibits exceptional sensing performance, featuring a RI sensitivity of 4248.64 nm/RIU, achieving detection of Pb²⁺ with a limit of detection of 3.419 pM. The synergistic effect of MOF and GO enlarges the specific surface area of the bound biochemical molecules and improves the electron transport rate, offering the possibility of high-performance sensing. Furthermore, the sensor we proposed exhibits excellent specificity and stability, possessing significant research potential, as well as providing a foundation for experimental exploration into high performance optical fiber sensing devices.</div></div>","PeriodicalId":49719,"journal":{"name":"Optics and Lasers in Engineering","volume":"193 ","pages":"Article 109115"},"PeriodicalIF":3.5,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144139211","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High sensitivity DC current sensor based on microfiber Mach-Zehnder interferometer combined with copper wire","authors":"Ling Gao,&nbsp;Chao Jiang,&nbsp;Zihao Guo,&nbsp;Bowen Han,&nbsp;Simei Sun,&nbsp;Tingshui Cao,&nbsp;Huiling Huang","doi":"10.1016/j.optlaseng.2025.109111","DOIUrl":"10.1016/j.optlaseng.2025.109111","url":null,"abstract":"<div><div>A highly sensitive fiber optic direct current (DC) current sensor based on Mach-Zehnder interferometer (MZI) combined with copper wire was proposed. Firstly, the coatings stripped single-mode fiber (SMF) is directly tapered to form an MZI, named MZI₁. Due to the tapering treatment of SMF, MZI₁ is particularly sensitive to temperature. In addition, due to the excellent heat transfer performance of copper wire, we fixed MZI₁ on a copper wire with a diameter of 1 mm and a length of 3 cm. The DC current generates Joule heat through the copper wire and conducts it to MZI₁. The heat transferred by the copper wire can significantly shift the dip wavelength of MZI₁, and the demodulation wavelength drift can indirectly achieve the measurement of DC current. The current square sensitivity of MZI₁ bonded with copper wire obtained from the experiment reached 209.5 pm/A², with a linearity of 0.9980. To further improve the sensitivity of MZI₁, we manufactured MZI₂ using the same manufacturing method as MZI₁, making the free spectral range of MZI₂ close to that of MZI₁. Then, we connected MZI₁ and MZI₂ in series to form a vernier effect sensor S₁ for DC current measurement. The experimental results show that the current square sensitivity of S₁ is as high as 3.28 nm/A², which amplifies the sensitivity of MZI₁ by 15.6 times. Meanwhile, S₁ also has excellent repeatability and stability, and the wavelength resolution and detection limit of S₁ are 0.65 nm and 0.45 A respectively. Due to the fact that the sensor manufacturing only involves optical fiber cleaving, optical fiber tapering, and materials bonding, this sensor has the advantages of simple structure, easy to manufacture, low cost, sturdy structure, and good structural repeatability, providing a new alternative solution for measuring DC current in practical applications.</div></div>","PeriodicalId":49719,"journal":{"name":"Optics and Lasers in Engineering","volume":"193 ","pages":"Article 109111"},"PeriodicalIF":3.5,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144139212","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Elimination of interpolation error in digital volume correlation: introducing Shift-DVC","authors":"Samuel Wantz ,&nbsp;Romain Brault ,&nbsp;Yannick Pannier ,&nbsp;Valéry Valle","doi":"10.1016/j.optlaseng.2025.109107","DOIUrl":"10.1016/j.optlaseng.2025.109107","url":null,"abstract":"<div><div>This study addresses one of the major factors affecting the metrological performance of Digital Volume Correlation (DVC), namely the systematic error caused by intensity interpolation, which is characterized by an S-shaped bias error. While random error can be reduced by improving image quality, systematic error cannot be avoided. To overcome this issue, a strategy called Shift-DVC is proposed to eliminate this systematic error in DVC.</div><div>In classical DVC techniques, points of interest (POIs) are located at integer positions. In contrast, the proposed Shift-DVC strategy introduces specific offsets to the conventional positions, causing the POIs to be located at non-integer positions where the S-shaped bias error is reduced. This method, which is simple to implement in classical DVC code, reduces the intensity interpolation error by a factor of up to four and significantly decreases the computation time required for convergence.</div></div>","PeriodicalId":49719,"journal":{"name":"Optics and Lasers in Engineering","volume":"193 ","pages":"Article 109107"},"PeriodicalIF":3.5,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144147906","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dual Friedrich-Wintgen bound states in the continuum in asymmetric all-silicon photonic crystal slabs","authors":"Yuying Wang,&nbsp;Jianjun Liu,&nbsp;Fangzhou Shu,&nbsp;Yong Du,&nbsp;Zhi Hong","doi":"10.1016/j.optlaseng.2025.109105","DOIUrl":"10.1016/j.optlaseng.2025.109105","url":null,"abstract":"<div><div>We propose and demonstrate the realization of dual Friedrich-Wintgen (F–W) bound states in the continuum (BICs) in a terahertz all-silicon photonic crystal (PhC) slab. A symmetric PhC slab with cylindrical hole array supports an electric quadrupole-SP BIC, which transitions into a quasi-SP BIC upon the breaking of its <em>C</em>_2v symmetry. By adjusting the asymmetry parameter, the quasi-SP BIC can be transformed into two F–W BICs due to its destructive interference with two guided mode resonances (GMRs), respectively. Notably, the frequency of one F–W BIC exhibits robustness to the thickness of the PhC slab over an extremely wide range, which is very useful for its practical applications.</div></div>","PeriodicalId":49719,"journal":{"name":"Optics and Lasers in Engineering","volume":"193 ","pages":"Article 109105"},"PeriodicalIF":3.5,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144139213","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Impact of multiplicative noise removal on digital volume correlation-based optical coherence elastography","authors":"Hao Wu ,&nbsp;Jiaqiu Wang ,&nbsp;Zhengduo Zhu ,&nbsp;Han Yu ,&nbsp;Hujin Xie ,&nbsp;Runxin Fang ,&nbsp;Zhiyong Li","doi":"10.1016/j.optlaseng.2025.109097","DOIUrl":"10.1016/j.optlaseng.2025.109097","url":null,"abstract":"<div><div>Digital volume correlation-based optical coherence elastography (DVC-based OCE) may easily suffer from multiplicative speckle noise of optical coherence tomography (OCT) imaging, which can introduce non-negligible calculation errors. In this study, Hamilton-Jacobi partial differential equations were adopted for multiplicative noise removal of OCT images and the impact of multiplicative noise removal on DVC-based OCE was investigated. Several deformation conditions, including static, sub-pixel translation, uniform compression and non-uniform deformation, were tested. Results showed that multiplicative noise removal can suppress the maximum noise-induced error to less than 0.15 pixels in static tests. A more precise sub-pixel translation with an accuracy of 0.6 pixels was obtained. For uniform compression, multiplicative noise removal can extend the strain upper limit to 0.116 with an error less than 15% and a correlation value higher than 0.8. It also worked better in non-uniform deformation with more reliable calculation points. These findings provide a way to improve the measurement accuracy of the DVC-based OCE method by removing multiplicative noise on OCT images.</div></div>","PeriodicalId":49719,"journal":{"name":"Optics and Lasers in Engineering","volume":"193 ","pages":"Article 109097"},"PeriodicalIF":3.5,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144134635","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Generative adversarial network based frequency domain enhancement and color compensation underwater image enhancement","authors":"Jiaxin Li,&nbsp;Zheping Yan","doi":"10.1016/j.optlaseng.2025.109102","DOIUrl":"10.1016/j.optlaseng.2025.109102","url":null,"abstract":"<div><div>In complex underwater environments, due to the large number of suspended particles as well as the varying scattering and absorption characteristics of light in different waters, underwater images are subject to diverse forms of mixed attenuation. Such as color bias, poor contrast, and degradation of details. This greatly limits the operational efficiency of underwater systems. To this purpose, we propose a new generative adversarial network based frequency domain enhancement and color compensation underwater image enhancement method, which performs image enhancement simultaneously in both the frequency and spatial domains. Specifically, we designed a dual-encoder architecture with a structural encoder and a color compensation encoder in the generator. We embed a Multi-scale Dense Feature Aggregation (MDFA) module in the dual encoder, to make different encoders extract rich semantic and contextual information according to different task requirements. In the decoder, we designed a based Frequency-domain Fourier Enhancement Module (FFEM) and a Complementary-color Prior Color-compensation Module (CPCM). The FFEM conducts color correction and detail enhancement of the features captured by structural encoder within the frequency domain. In the spatial domain, the CPCM utilizes the color compensation information extracted by the color compensation encoder to adjust the enhancement results of the FFEM. Abundant experiments indicate that the suggested method significantly improves the degraded image quality, exhibits superior generalization performance, and outperforms the state-of-the-art methods in both quantitative and qualitative evaluations. Our code is available at <span><span>https://github.com/LiJiaxin011/FCC-GAN</span><svg><path></path></svg></span>.</div></div>","PeriodicalId":49719,"journal":{"name":"Optics and Lasers in Engineering","volume":"193 ","pages":"Article 109102"},"PeriodicalIF":3.5,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144134634","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Low cross-talk multiple-image hiding via lateral-shifting multiplexing","authors":"Yupeng Zhu ,&nbsp;Xinyu Zhang ,&nbsp;Xiaoshuang Shen ,&nbsp;Yanqi Chen ,&nbsp;Zhaoke Mi ,&nbsp;Yusi Zhu ,&nbsp;Haoyu Wu ,&nbsp;Qi Zhou ,&nbsp;Peixiang Xiong ,&nbsp;Pingle Huang ,&nbsp;Changjun Ke ,&nbsp;Yishi Shi","doi":"10.1016/j.optlaseng.2025.109095","DOIUrl":"10.1016/j.optlaseng.2025.109095","url":null,"abstract":"<div><div>We propose a lateral-shifting multiplexing method for multi-image hiding with low cross-talk. Unlike schemes that use a single degree of freedom (such as wavelength <span><math><mi>λ</mi></math></span>, distance <em>z</em>, or angle <span><math><mi>θ</mi></math></span>), our approach translates phase keys across two degrees of freedom (<span><math><mrow><mstyle><mi>Δ</mi></mstyle><mi>x</mi></mrow></math></span> and <span><math><mrow><mstyle><mi>Δ</mi></mstyle><mi>y</mi></mrow></math></span>), enabling the successful extraction of high-quality images with a 1 mm multi-plane spacing. Meanwhile, the integration of a physics-driven neural network enhances the system's ability to reveal hidden images. Compared to diffraction distance multiplexing scheme with a single degree of freedom (<em>z</em>), our approach reduces cross-talk between extracted images, as demonstrated through experimental validation using a cascaded phase system.</div></div>","PeriodicalId":49719,"journal":{"name":"Optics and Lasers in Engineering","volume":"193 ","pages":"Article 109095"},"PeriodicalIF":3.5,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144134515","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Real-time optical in-vivo thermo-viscoelastometry of albumen and blood vessels in chicken embryo models under laser heating and ablation","authors":"Lyazzat Mukhangaliyeva ,&nbsp;Shakhrizat Alisherov ,&nbsp;Vladimir Bessonov ,&nbsp;Zhannat Ashikbayeva ,&nbsp;Carlo Molardi ,&nbsp;Daniele Tosi ,&nbsp;Zhandos Utegulov","doi":"10.1016/j.optlaseng.2025.109116","DOIUrl":"10.1016/j.optlaseng.2025.109116","url":null,"abstract":"<div><div>The laser ablation technique is commonly used in biomedicine to treat tumor cancerous tissues with minimal invasiveness to surrounding normal tissues. However, an accurate non-contact, real-time, in-situ, label-free thermomechanical measurement of affected tissues undergoing laser heating and ablation is virtually non-existent in clinical settings. In this work, we demonstrate real-time monitoring of local temperature and viscoelastic response of the albumen and blood vessels in chick chorioallantoic membrane (CAM) models during infrared laser heating and ablation by non-contact, label-free Brillouin light scattering (BLS) spectroscopy and fiber Bragg grating (FBG)-based thermal mapping. The albumen and CAM models were selected as ethical and cost-effective models with an easily accessible vasculature network to investigate changes in thermal and viscoelastic properties during laser-induced heating and ablation. Both studied biomaterials became stiffer and less viscous during laser-induced heating due to the thermal denaturation of proteins, forming cross-links with subsequent gelation (coagulation) and water evaporation (dehydration). Demonstrated hybrid BLS-FBG modality has a strong potential to equip conventional laser ablation therapy with accurate, real-time thermomechanical property-informed diagnostics to substantially improve patient outcomes.</div></div>","PeriodicalId":49719,"journal":{"name":"Optics and Lasers in Engineering","volume":"193 ","pages":"Article 109116"},"PeriodicalIF":3.5,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144139210","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}