Optics and Laser Technology最新文献

{"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":"LInear Optimization of Neurons (LION) for computational photography augmentation","authors":"Daoyu Li ,&nbsp;Yibo Feng ,&nbsp;Lu Li ,&nbsp;Yiming Li ,&nbsp;Chao Deng ,&nbsp;Liheng Bian","doi":"10.1016/j.optlastec.2025.112834","DOIUrl":"10.1016/j.optlastec.2025.112834","url":null,"abstract":"<div><div>Imaging in complex lighting conditions such as low light and underwater scenarios remains challenging. Computational photography algorithms can enhance image quality in complex environments. However, conventional methods may suffer from imprecise models or priors, while deep learning ones face limitations in data-unaccessible scenarios. To address these challenges, we present a generalized augmenting technique for computational photography, termed Linear Optimization of Neurons (LION), designed to perform case-specific optimization while maintaining the network’s structure and weights. We deeply investigated the robust semantic constraints on the deep feature domain and found that linear transformations of pre-trained convolutional neural network (CNN) features can enhance the quality of output images without necessitating modifying network architecture. Building upon this finding, we developed a generalized workflow to augment both conventional and deep learning methods. We first fit the encoder–decoder CNN to output the pre-reconstruction from an off-the-shelf method. Then, fixing the network weights, we optimize the linear combinations of features using a generalized color and texture regularization to further enhance the output image quality. A series of experiments on various public datasets confirmed the effectiveness of this technique, particularly in underwater and low-light imaging scenarios.</div></div>","PeriodicalId":19511,"journal":{"name":"Optics and Laser Technology","volume":"188 ","pages":"Article 112834"},"PeriodicalIF":4.6,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143747096","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":"Coherent supercontinuum generation by the high-order soliton molecules amplification","authors":"Almikdad Ismaeel ,&nbsp;Ilya O. Orekhov ,&nbsp;Stanislav G. Sazonkin ,&nbsp;Artem O. Prudnikov ,&nbsp;Aleksander Y. Fedorenko ,&nbsp;Dmitriy A. Dvoretskiy ,&nbsp;Alexander A. Krylov ,&nbsp;Feifei Yan ,&nbsp;Lev K. Denisov ,&nbsp;Valeriy E. Karasik","doi":"10.1016/j.optlastec.2025.112913","DOIUrl":"10.1016/j.optlastec.2025.112913","url":null,"abstract":"<div><div>We present an experimental investigation of the amplification of soliton molecules (SM) in an erbium-doped all-fiber amplifier. The amplification of a 10-pulse regime (with 509 fs pulse duration, 2.64 ps pulses separation, and low repetition rate Allan deviation of <span><math><mrow><mn>1.98</mn><mo>·</mo><msup><mrow><mn>10</mn></mrow><mrow><mo>-</mo><mn>9</mn></mrow></msup></mrow></math></span> at a 1 s averaging interval of 10-hour free-running measurement), generated by an erbium-doped fiber ring laser mode-locked through nonlinear polarization evolution (NPE), achieved an average power of 152 mW for stable amplified soliton molecules (SM). This process resulted in high coupling states with the same number of pulses and spectrum broadening leading to coherent supercontinuum generation. A wide spectrum with a comb-teeth structure in the range [1400 nm – 1700 nm] was obtained without pulse fission (10 pulses remains coherently in time domain with increased pulse duration up to 1.129 ps and without changing in the time separation between pulses), achieved through precise amplification of the SM without the use of high-nonlinearity fibers (HNLFs), and with low relative intensity noise of 0.0108 % in the range of 10 kHz – 1 MHz. Additionally, we demonstrate the characteristics of amplified SM as a function of the number of pulses, which was varied by adjusting the pump power of the master oscillator. The number of solitons remained constant during extra-cavity amplification; however, the results for SM amplification with 3, 4, 5, 7, 9, and 10 pulses indicate tunability in both the average and peak power of the amplified pulses. These findings position soliton molecules as a novel tool for optical frequency comb spectroscopy and with spectrum broadening suitable for potential application in f-2f interferometry.</div></div>","PeriodicalId":19511,"journal":{"name":"Optics and Laser Technology","volume":"188 ","pages":"Article 112913"},"PeriodicalIF":4.6,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143747207","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":"Dynamic scene 360° three-dimensional reconstruction with large field-of-view based on metasurface-enabled structured light","authors":"Anjun Qu ,&nbsp;Mengran Yang ,&nbsp;Bingxue Zhang ,&nbsp;Hua Cheng ,&nbsp;Shuqi Chen ,&nbsp;Zhengren Zhang","doi":"10.1016/j.optlastec.2025.112901","DOIUrl":"10.1016/j.optlastec.2025.112901","url":null,"abstract":"<div><div>Three-dimensional (3D) reconstruction is a key technology for reshaping stereoscopic models of the physical world, with important applications in medical diagnosis, engineering exploration, and industrial manufacturing. Large field-of-view (FOV), dynamic reconstruction, and ultra-compact volume are important development directions for 3D reconstruction systems. However, existing reconstruction techniques struggle to meet these criteria simultaneously, which greatly restricts their further advancement.<!--> <!-->This paper proposes a structured light (SL) 3D reconstruction system based on metasurface, achieving 360° dynamic scene reconstruction with a large imaging FOV of 140°, a maximum error of only 6.32 % in 1.5 m, and SL dimensions of only 0.3 mm × 0.3 mm.<!--> <!-->Specifically, the designed metasurface projects 10,000 random dots into the 180° transmission space. By capturing and processing reflection images of dynamic scenes within the space using visual technology, single-frame 3D point clouds obtained at different times are stitched together to construct a complete 3D model of the scene.<!--> <!-->Compared to traditional 3D reconstruction technologies, our method offers significant advantages in terms of viewing angle range, dynamic 3D reconstruction, and integration. It paving a new way for the development of 3D devices, and having profound implications for future technological innovations.</div></div>","PeriodicalId":19511,"journal":{"name":"Optics and Laser Technology","volume":"188 ","pages":"Article 112901"},"PeriodicalIF":4.6,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143747209","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":"Research on the forming ability and mechanism of laser impact micro isothermal forging","authors":"Hongchen Liu,&nbsp;Zhang Yan,&nbsp;Xiao Wang,&nbsp;Maomao Cui,&nbsp;Qimeng Yao,&nbsp;Huixia Liu","doi":"10.1016/j.optlastec.2025.112909","DOIUrl":"10.1016/j.optlastec.2025.112909","url":null,"abstract":"<div><div>High-performance monolithic forming of thin-walled complex structures from difficult-to-deform lightweight materials is an urgent need for the development of microdevices, the microforging forming of which has been an unsolved challenge. We propose a laser shock micro isothermal forging method that combines pulsed laser shock microforming and isothermal forging. The forming performance and mechanism of 2024 aluminum alloy miniature spacer frames are investigated through simulations and experiments. We examine the effects of different laser energies and forging temperatures on the forming ability of workpieces. The results show that at constant laser energy, thermal activation and dynamic recovery mechanisms cause the forming height to increase with temperature. At constant temperature, the forming height increases with increasing laser energy, but at room temperature, increasing the laser energy alone is insufficient for the desired forming. At the same laser energy, 350 °C offers better forming than 20 °C, with higher forming limits and potential for further improvement by a larger laser energy. Analysis of elastic–plastic wave transfer and stress–strain indicates that before the positive plastic wave acts on the forming, reflected elastic waves induce strain in initial contact area with the die. Material flow analysis reveals forming and reverse plastic deformation mechanisms unique to dynamic loading. Key factors include cross-region material replenishment, work hardening, and plastic wave reflection, leading to material inflow into fluted cavities and reverse plastic deformation in web regions. The degree of reverse plastic deformation increases with increasing laser energy but enhances overall formation until a threshold is reached.</div></div>","PeriodicalId":19511,"journal":{"name":"Optics and Laser Technology","volume":"188 ","pages":"Article 112909"},"PeriodicalIF":4.6,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143747208","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":"Abruptly autofocusing and trapping capability properties of circular Butterfly Pearcey beams","authors":"Zijing Zhang,&nbsp;Yujie Wu,&nbsp;Man Tao,&nbsp;Weiting Wang,&nbsp;Zhenhang Xu,&nbsp;Zhuoyue Sun,&nbsp;Chuhong Zhuang,&nbsp;Zihan Liu,&nbsp;Dongmei Deng","doi":"10.1016/j.optlastec.2025.112886","DOIUrl":"10.1016/j.optlastec.2025.112886","url":null,"abstract":"<div><div>In this paper, the circular Butterfly Pearcey beams (CBPBs) with autofocusing properties are constructed for the first time, and its autofocusing and trapping capabilities are investigated theoretically and experimentally. We accomplish precise control over the number of focal points, the focal length, the focus intensity, and the main power ring position of CBPBs through the adjustment of the transverse scale factor, the spatial offset, and the second-order chirp factor. At the same time, we present a modulation method that significantly enhances beam focusing capability while maintaining the focal length. Additionally, we explore the magnitudes of the scattering force, gradient force, and trapping force exerted by both the CBPBs and the circular Pearcey beams (CPBs) on Rayleigh particles. The results indicate that the autofocusing ability and trapping force of CBPBs are twice as effective as those of CPBs. Finally, experiments verify the transmission properties of CBPBs and its trapping characteristics for one or two particles. The simulation results are in close accordance with the experimental findings. Therefore, the CBPBs offer an important option for a variety of applications in fields such as light trapping and particle manipulation.</div></div>","PeriodicalId":19511,"journal":{"name":"Optics and Laser Technology","volume":"188 ","pages":"Article 112886"},"PeriodicalIF":4.6,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143747204","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":"Design and analysis of a multispectral compatible stealth metamaterial for enhanced stealth across the laser, Infrared, and radar spectral bands","authors":"Binzhen Zhang,&nbsp;Yulong Gao,&nbsp;Jiayun Wang,&nbsp;Linyue Chen,&nbsp;Ling Zhao,&nbsp;Junping Duan","doi":"10.1016/j.optlastec.2025.112902","DOIUrl":"10.1016/j.optlastec.2025.112902","url":null,"abstract":"<div><div>With the increasing prevalence of multi-band detection technologies, military equipment and weapons face heightened risks of exposure to enemy detectors, posing significant challenges to stealth capabilities. This paper proposes a multispectral stealth metamaterial (MSM) designed for cross-band stealth applications in laser, infrared, and radar domains. The device integrates a one-dimensional photonic crystal (1D-PC) and a radar-absorbing metamaterial (RAM), achieving a low specular reflectivity (average value of 0.25) across the 8–14 μm range, over 98 % absorption at 10.6 μm, and more than 90 % absorption efficiency within the 7.5–18 GHz radar band, while simultaneously suppressing high emissivity in the infrared band. A 10 × 10 cm2 sample was fabricated and tested, demonstrating the device’s multispectral modulation performance. This work provides a novel approach to multispectral modulation and thermal radiation management, offering potential advancements in stealth technology.</div></div>","PeriodicalId":19511,"journal":{"name":"Optics and Laser Technology","volume":"187 ","pages":"Article 112902"},"PeriodicalIF":4.6,"publicationDate":"2025-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143735134","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":"SPR sensor based on sapphire prism coupling with dual-Au-layer sandwiched GaN structure for enhanced sensitivity and FOM","authors":"Zhuo-Yu Jin ,&nbsp;Chu Cao ,&nbsp;Nuerguli Kari ,&nbsp;Dian-Yun Zhang ,&nbsp;Qi Wang","doi":"10.1016/j.optlastec.2025.112861","DOIUrl":"10.1016/j.optlastec.2025.112861","url":null,"abstract":"<div><div>Surface plasmon resonance (SPR) sensors are currently applied in various fields, driving the development of precise detection technologies. However, few designs effectively balance ease of fabrication, high detection performance, and structural stability. To address this challenge, we developed an SPR sensor with a sapphire prism-Au/Gallium Nitride (GaN)/Au composite film structure. The GaN thin film enhances sensitivity, while the coupling between the dual Au layers and sapphire reduces the full width at half maximum (FWHM) and improves sensor stability. Simulation results indicate a significant increase in the electric field intensity at the sensor surface. Experimental results demonstrate that the structure exhibits excellent long-term stability. Compared with conventional Au film sapphire prism SPR sensors, this design achieves a 3.14-fold increase in sensitivity and a 5.43-fold improvement in the figure of merit (FOM). This study presents a novel approach to further enhancing SPR sensor performance and highlights the potential applications of this structure in detection technologies.</div></div>","PeriodicalId":19511,"journal":{"name":"Optics and Laser Technology","volume":"187 ","pages":"Article 112861"},"PeriodicalIF":4.6,"publicationDate":"2025-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143724427","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":"Nanosecond laser-induced plasma for nondestructive cleaning and substrate strengthening of 7075 aluminum alloy surface coating","authors":"Yubo Liu,&nbsp;Jixing Cai,&nbsp;Hongtao Mao,&nbsp;Yue Zhou,&nbsp;Chunting Wu","doi":"10.1016/j.optlastec.2025.112862","DOIUrl":"10.1016/j.optlastec.2025.112862","url":null,"abstract":"<div><div>This study develops a novel model for plasma-based non-destructive cleaning and substrate reinforcement, employing techniques such as acoustic frequency, LIBS, EDS, SEM, and mechanical property analysis. Theoretical optimization of plasma and shock wave processes for substrate reinforcement is performed. Numerical simulations and experimental results validate the plasma-induced spatial stress distribution process, showing that energy release from multi-pulse combustion waves occurs gradually. Acoustic emission signals during cleaning are monitored to identify the characteristic frequencies of stress elimination and ablation. The combined use of LIBS, EDS, and SEM to analyze surface microstructure and composition changes during cleaning shows that plasma impact and shear wave reflection reduce surface defects, significantly enhancing substrate hardness and durability. Shock-induced martensitic phase transformation increased the local microhardness from 153.5 HV to 206.9 HV. The direct interrelationship of multiple input parameters in the cleaning process was established, and through multidimensional analysis, the physical and chemical reactions in the cleaning process as well as the physical mechanisms of substrate reinforcement after cleaning were revealed.</div></div>","PeriodicalId":19511,"journal":{"name":"Optics and Laser Technology","volume":"187 ","pages":"Article 112862"},"PeriodicalIF":4.6,"publicationDate":"2025-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143724428","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":"Research on spatiotemporal dynamic speckle suppression mechanism in microstructured waveguide illumination DIC imaging","authors":"Donghui Zhang ,&nbsp;Tianxi Zhai ,&nbsp;Yingjie Yu ,&nbsp;Cheng Zhang ,&nbsp;Yilan Chen ,&nbsp;Jian Cui ,&nbsp;Xiaobo Zhuang ,&nbsp;Xiulin Qiu ,&nbsp;Yuxin Wei ,&nbsp;Xiangyang Pang ,&nbsp;Zhigang Liu ,&nbsp;Zhiyu Zhu ,&nbsp;Ziruo Cui","doi":"10.1016/j.optlastec.2025.112856","DOIUrl":"10.1016/j.optlastec.2025.112856","url":null,"abstract":"<div><div>Laser-illuminated imaging, capable of over-the-horizon detection, is extensively utilized in remote sensing and mapping of space, polar regions, and oceans. Under partly coherent laser illumination, random bright and dark patches caused by phase change of light waves due to minute optical path difference in differential interferometric contrast imaging, hence diminishing image quality. This paper investigated the phase-modulated speckle suppression mechanism under partially coherent light and proposed a spatio-temporal dynamic speckle autocorrelation suppression method using microstructured waveguides. By enhancing the conventional reflective differential interference contrast imaging systems with a partially coherent laser as the illumination source and incorporating a point-array microstructure device, spatio-temporal dynamic experiments were conducted through the integration of beam angle and displacement transformations. The results demonstrated that Ir-coated, curved surface-like dot-array homogenizing devices which assisted in imaging effectively achieve spot homogenization and uniform energy distribution, leveraging the scattering suppression capabilities inherent in their material and structural design. In both air and underwater environments, when the light source was uniformly translating or rotating and reached the autocorrelation threshold, the scattering optical range difference was most uniformly distributed; at the same time, when the angle of incidence reached the autocorrelation threshold, the coherence width of the light field was largest, the phase difference was smallest, and the imaging quality was best. Especially in the underwater imaging experiments, the proposed microstructure design combined with the dynamic modulation of the light source demonstrated superior scattering suppression capability, providing an effective way to improve underwater imaging quality.</div></div>","PeriodicalId":19511,"journal":{"name":"Optics and Laser Technology","volume":"187 ","pages":"Article 112856"},"PeriodicalIF":4.6,"publicationDate":"2025-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143735217","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}