Optics and Lasers in Engineering最新文献

{"title":"Advanced integral imaging 3D display system: crosstalk elimination and depth enhancement using hole arrays and colloids","authors":"Ge Feng,&nbsp;Sun Mingxin,&nbsp;Ai Lingyu","doi":"10.1016/j.optlaseng.2025.109089","DOIUrl":"10.1016/j.optlaseng.2025.109089","url":null,"abstract":"<div><div>Integral imaging is a 3D display technology that provides realistic stereoscopic visual effects. However, traditional integral imaging display systems suffer from low resolution, severe crosstalk, and high granularity. To address these issues, we propose an integral imaging 3D display that pairs a hole array with a colloidal scattering layer to suppress crosstalk and extend depth of field. This system ensures the resolution of the 3D image while maintaining depth of field. A suitable hole array is analyzed and designed from the light field perspective to solve the crosstalk problem caused by light entering adjacent elemental lenses and lens gaps, affecting surrounding viewpoints. Simulations using LightTools verify the results. Theoretical analysis and experiments demonstrate that colloids smooth the system’s parallax, maintain the depth of the 3D image, and increase floatability. Experimental results show that the proposed method effectively improves the performance of the integral imaging display system.</div></div>","PeriodicalId":49719,"journal":{"name":"Optics and Lasers in Engineering","volume":"193 ","pages":"Article 109089"},"PeriodicalIF":3.5,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144167479","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":"Blind super-resolution reconstruction of infrared images based on dual-domain feature extraction","authors":"Huizhou Liu,&nbsp;Kui Yuan,&nbsp;Bowen Shen,&nbsp;Wei Xing,&nbsp;Mengxing Huang","doi":"10.1016/j.optlaseng.2025.109109","DOIUrl":"10.1016/j.optlaseng.2025.109109","url":null,"abstract":"<div><div>Existing infrared image super-resolution (SR) reconstruction methods typically employ a single degradation model to characterize image degradation, which often fails to reconstruct high-quality clear images in real-world scenarios effectively. Compared to visible light images, infrared or infrared thermal imaging images have lower resolution, fewer textures and details, and are more susceptible to noise interference. To address the challenges associated with the reconstruction of infrared images under complex degradation conditions, this paper proposes a novel wavelet transform-based blind super-resolution network (WTB-Net). WTB-Net can effectively realize multi-type degenerate kernel estimation, alternating optimization, and subsequent super-resolution image reconstruction under a unified framework. Firstly, to better extract the feature and detailed features of infrared images, we designed a bi-domain feature extraction module (BDFE), which is composed of multi-scale frequency domain feature extraction blocks (FDB) and spatial domain feature extraction blocks (SDB). In addition, we propose an edge attention mechanism to improve the reconstruction of edges and details. The above features will be input into the restorer and estimator for multiple super-resolution reconstructions, and the reconstruction results will be applied to the estimation and updating of a multi-class degraded fuzzy kernel. Finally, with the input of the low-resolution (LR) image, the high-resolution (HR) image can be generated based on the degraded fuzzy kernel and reconstruction network to complete the blind super-resolution reconstruction process. The proposed method is systematically compared with both classical and common super-resolution reconstruction methods using the Airai Electro-Optics Database and the LLVIP Database. The qualitative and quantitative results consistently validate the effectiveness of WTB-Net.</div></div>","PeriodicalId":49719,"journal":{"name":"Optics and Lasers in Engineering","volume":"193 ","pages":"Article 109109"},"PeriodicalIF":3.5,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144167485","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":"Bayesian calibration of digital fringe projection systems considering both aleatoric and epistemic uncertainties","authors":"Sreelakshmi Sreeharan ,&nbsp;Hui Wang ,&nbsp;Keigo Hirakawa ,&nbsp;Beiwen Li","doi":"10.1016/j.optlaseng.2025.109098","DOIUrl":"10.1016/j.optlaseng.2025.109098","url":null,"abstract":"<div><div>This study proposes a Bayesian probabilistic method for calibrating digital fringe projection systems, addressing both aleatoric and epistemic uncertainties that can impact measurement accuracy and precision. The approach centers on Bayesian inference, which is particularly important for achieving quantified uncertainty in high-dimensional parameter space. In the context of 3D reconstruction, accuracy and precision are critically important because uncertainties can propagate and accumulate, possibly leading to significant random and systematic errors in final results. These errors can compromise the overall usability of the reconstruction results. Through comparative analysis with traditional maximum-likelihood-based calibration approach, for the first time to the best of the authors’ knowledge, our study demonstrates that the Bayesian approach not only enhances the confidence on uncertainty quantification but also significantly improves the estimated precision of 3D coordinate measurements. These improvements are particularly important in applications such as quality control, vision-based welding systems, and other precision-dependent tasks, where reliable and accurate 3D measurement are essential. The findings underscore the superiority of Bayesian inference in 3D measurement applications, making it a more dependable choice for producing high-accuracy and high-precision reconstructions.</div></div>","PeriodicalId":49719,"journal":{"name":"Optics and Lasers in Engineering","volume":"193 ","pages":"Article 109098"},"PeriodicalIF":3.5,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144167483","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":"Helicity inversion of the scattered twisted light field using pilot-assisted laser light and Stokes correlation","authors":"Tushar Sarkar ,&nbsp;Sourav Chandra ,&nbsp;Jiapeng Cai ,&nbsp;Xiang Peng ,&nbsp;Wenqi He","doi":"10.1016/j.optlaseng.2025.109094","DOIUrl":"10.1016/j.optlaseng.2025.109094","url":null,"abstract":"<div><div>We propose and experimentally demonstrate a new method to directly invert the helicity of the twisted beam propagating through a scattering media. This is implemented by leveraging a pilot-assisted laser light and a special finding regarding the higher-order Stokes correlation. Here, the pilot-assisted strategy refers to coaxial light propagation through a scattering media in which one of the orthogonal polarization bases is encoded with the twisted beam while another polarization basis is free from it. Such a strategy eliminates the path-induced randomness in the higher-order Stokes correlation owing to the identical randomness presented in both orthogonal polarization bases, preserving the incident twisted beam. The recovery and inversion of the helicity are accomplished by measuring the higher-order Stokes correlation of the scattered light. A detailed theoretical framework is developed and supported by numerical simulation followed by experimental tests.</div></div>","PeriodicalId":49719,"journal":{"name":"Optics and Lasers in Engineering","volume":"193 ","pages":"Article 109094"},"PeriodicalIF":3.5,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144147907","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":"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}