Optics and Lasers in Engineering最新文献_第3页

Spectral angle differential decoupling method for determining respirable coal dust concentration by reducing spray droplet scattering interference 减少喷雾液滴散射干扰测定呼吸性煤尘浓度的光谱角微分解耦方法

IF 3.7 2区工程技术

Optics and Lasers in Engineering Pub Date : 2026-06-01 Epub Date: 2026-02-07 DOI: 10.1016/j.optlaseng.2026.109663

Wen Nie , Junchao Wan , Huitian Peng , Huaitong Li , Chenyang Zhou , Yuping Li

{"title":"Spectral angle differential decoupling method for determining respirable coal dust concentration by reducing spray droplet scattering interference","authors":"Wen Nie , Junchao Wan , Huitian Peng , Huaitong Li , Chenyang Zhou , Yuping Li","doi":"10.1016/j.optlaseng.2026.109663","DOIUrl":"10.1016/j.optlaseng.2026.109663","url":null,"abstract":"<div><div>Monitoring of respirable dust concentration in high-humidity coal mine environments is subject to severe distortion due to interference from spray droplets. We propose a spectral angle differential decoupling method to suppress spray droplet interference by exploiting the differences in scattering characteristics at dual wavelengths (650 and 940 nm) and dual angles (20° and 90°). Experiments revealed that the dual-wavelength scattering intensity ratios for spray droplets at fixed angles were close to each other (α<em><sub>w</sub></em><sub>,</sub><em><sub>20°</sub></em>≈0.844,α<em><sub>w,90°</sub></em>≈0.864), whereas a significant disparity arose for respirable dust due to its wavelength-dependent scattering properties. A differential cancellation model was established, using the wavelength dimension to eliminate spray scattering interference and employing the angular dimension to decouple the dust concentration. This led to the derivation of an explicit dust concentration inversion model. We designed a time-division multiplexed circuit control system (trigger period < 14 ms), employing alternating laser triggering to ensure spatiotemporal signal consistency. Experimental results demonstrated that under spray interference, conventional single-light-source monitoring methods exhibited a peak error of 50%, while the proposed model reduced this error to 14%. Furthermore, within a concentration range of 35–100 mg/m³, the average relative error remained stable between 10% and 15%.</div></div>","PeriodicalId":49719,"journal":{"name":"Optics and Lasers in Engineering","volume":"201 ","pages":"Article 109663"},"PeriodicalIF":3.7,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146189444","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}

引用次数: 0

Broadband snapshot complete polarization imaging based on dual modified Sagnac-grating interferometers 基于双改进sagnac光栅干涉仪的宽带快照完全偏振成像

IF 3.7 2区工程技术

Optics and Lasers in Engineering Pub Date : 2026-06-01 Epub Date: 2026-02-13 DOI: 10.1016/j.optlaseng.2026.109643

Haitao Wang , Fengqi Guo , Jingping Zhu , Kang Zong , Xiangzhe Zhang , Xizhen Luo , Huilin Jiang

{"title":"Broadband snapshot complete polarization imaging based on dual modified Sagnac-grating interferometers","authors":"Haitao Wang , Fengqi Guo , Jingping Zhu , Kang Zong , Xiangzhe Zhang , Xizhen Luo , Huilin Jiang","doi":"10.1016/j.optlaseng.2026.109643","DOIUrl":"10.1016/j.optlaseng.2026.109643","url":null,"abstract":"<div><div>Full polarization imaging provides an additional dimension of information acquisition beyond hyperspectral and intensity imaging. This paper presents a novel broadband snapshot complete polarized Sagnac interferometer (BSCPSI). The BSCPSI is based on two modified dispersion-compensated polarization Sagnac interferometers (MDCPSI). Combining the two MDCPSI units divides incident light into four sheared beams at distinct positions. These beams converge on the detector focal plane array, forming interference fringes containing all Stokes parameters, thereby enabling broadband full-Stokes imaging. A novel demodulation algorithm incorporating reference beams is introduced. This algorithm effectively mitigates detrimental system noise effects while maintaining reasonable accuracy. Optical efficiency analysis indicates that BSCPSI performance can be improved by simultaneously: (1) enhancing <em>P</em>-light transmittance within the polarizing beam splitter, (2) increasing <em>S</em>-light reflectivity in the polarizing beam splitter, and (3) raising the diffraction efficiency of blazed gratings. For MDCPSI, a glass substrate matching the material and thickness of the flat beam splitter is integrated. It positioned opposite the Wollaston grating beam splitter (WGBS) to eliminate optical path difference. Significant error analysis concludes that assembly error between the two plane mirrors must remain below 2.8 mm. Simulations and experiments demonstrate that while MDCPSI achieves linear polarization imaging of artificial targets, BSCPSI successfully identifies their circular polarization information. This work provides a robust approach for snapshot broadband polarization imaging.</div></div>","PeriodicalId":49719,"journal":{"name":"Optics and Lasers in Engineering","volume":"201 ","pages":"Article 109643"},"PeriodicalIF":3.7,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146189441","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}

引用次数: 0

CerDef-Detector: automated detection of surface defects in buzzer ceramic discs based on deep learning and machine vision CerDef-Detector：基于深度学习和机器视觉的蜂鸣器陶瓷片表面缺陷自动检测

IF 3.7 2区工程技术

Optics and Lasers in Engineering Pub Date : 2026-06-01 Epub Date: 2026-01-27 DOI: 10.1016/j.optlaseng.2026.109641

Fan Zhang , Xiangfeng Zhang , Hong Jiang , Zhiyi Fan , Kaige Sun , Hongxia Shi , Yefeng Li

{"title":"CerDef-Detector: automated detection of surface defects in buzzer ceramic discs based on deep learning and machine vision","authors":"Fan Zhang , Xiangfeng Zhang , Hong Jiang , Zhiyi Fan , Kaige Sun , Hongxia Shi , Yefeng Li","doi":"10.1016/j.optlaseng.2026.109641","DOIUrl":"10.1016/j.optlaseng.2026.109641","url":null,"abstract":"<div><div>Accurate optical inspection of ceramic components is essential for ensuring the reliability of piezoelectric devices and other precision optoelectronic systems. Surface defect detection of buzzer ceramic discs, when combined with deep learning and machine vision, provides a powerful non-contact approach for high-precision quality evaluation under challenging optical conditions. To address the difficulties of extracting subtle defect features in low-contrast and complex illumination environments, an improved detection model, CerDef-Detector, was developed based on the YOLOv11n framework. In this model, a novel Dual-Directional Attention (D2A) module and a Bi-Directional Feature Interaction (BDFI) module were incorporated to effectively enhance the perception of dents and scratches. In addition, a Shape-Intersection over Union (Shape-IoU) loss function was employed to optimize bounding box regression accuracy. A comprehensive ceramic disc defect image dataset encompassing multiple defect types was constructed to support model training. Experimental results showed that CerDef-Detector achieved a precision (P) of 97.21%, a recall (R) of 96.45%, and a mean Average Precision at a 0.5 IoU threshold ([email protected]) of 97.92%, significantly outperforming mainstream detection models. Practical analyses on lighting conditions, defect categories, inference speed, and model size indicated that the proposed method can efficiently accomplish optical defect detection on buzzer ceramic surfaces. This approach offers a reliable and scalable solution for intelligent machine-vision inspection and laser-assisted quality control in advanced manufacturing and other optics-driven industrial applications.</div></div>","PeriodicalId":49719,"journal":{"name":"Optics and Lasers in Engineering","volume":"201 ","pages":"Article 109641"},"PeriodicalIF":3.7,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146079583","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}

引用次数: 0

Noise imaging based on 90–140 GHz photonic noise source 基于90-140 GHz光子噪声源的噪声成像

IF 3.7 2区工程技术

Optics and Lasers in Engineering Pub Date : 2026-06-01 Epub Date: 2026-01-31 DOI: 10.1016/j.optlaseng.2026.109668

Jiayu Chen , Yuehui Sun , Shede Chen , Pu Li , Liyun Zhong , Jianglei Di , Yuncai Wang

引用次数: 0

Toward accurate super-resolution reconstruction: Fractional - frequency domain position mapping model for digital holographic microscopy 迈向精确的超分辨重建：数位全息显微镜的分数阶频域位置映射模型

IF 3.7 2区工程技术

Optics and Lasers in Engineering Pub Date : 2026-06-01 Epub Date: 2026-02-05 DOI: 10.1016/j.optlaseng.2026.109672

Mengyao Li , Bingcai Liu , Jiaxin Meng , Kaixiang Xie , Hongjun Wang , Xueliang Zhu , Jintao Xu , Ailing Tian

{"title":"Toward accurate super-resolution reconstruction: Fractional - frequency domain position mapping model for digital holographic microscopy","authors":"Mengyao Li , Bingcai Liu , Jiaxin Meng , Kaixiang Xie , Hongjun Wang , Xueliang Zhu , Jintao Xu , Ailing Tian","doi":"10.1016/j.optlaseng.2026.109672","DOIUrl":"10.1016/j.optlaseng.2026.109672","url":null,"abstract":"<div><div>In Frequency-Shifting Digital Holographic Microscopy (FSDHM), tilted illumination causes positional distortions in spectral sub-apertures, significantly reducing the accuracy of super-resolution phase reconstruction without precise correction. We propose a novel method for high-precision super-resolution phase reconstruction. By analyzing the complex amplitude distribution of the original image across spatial, fractional fourier, and fourier domains, a fractional - frequency domain position mapping model was established. We convert the spectral synthetic aperture problem into the fractional domain, thereby avoiding the limitations of indistinct spectral structural features. Exploiting spatial features of the original image in the fractional domain for feature extraction and matching, this method maps fractional domain offsets back to the frequency domain, enabling precise correction and synthesis of spectral sub-apertures. Simulations and experiments demonstrate sub-aperture positional distortion correction with errors below 1/4 pixel, improving accuracy by 72.9% over conventional FSDHM and achieving super-resolution phase reconstruction by a factor of 1.71. We confirm the method’s applicability to biological pathology samples. It significantly reduces reliance on mechanical control precision and supports flexible frequency-shifting operations with arbitrary offsets. We anticipate that our work offers a viable new tool for applications requiring the non-destructive evaluation of cells or pathological samples, as well as high-precision industrial inspection tasks.</div></div>","PeriodicalId":49719,"journal":{"name":"Optics and Lasers in Engineering","volume":"201 ","pages":"Article 109672"},"PeriodicalIF":3.7,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146189443","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}

引用次数: 0

A highly error-tolerant phase unwrapping method based on Gray-coded light for misalignment error scenarios 一种基于灰度编码光的高度容错相位展开方法

IF 3.7 2区工程技术

Optics and Lasers in Engineering Pub Date : 2026-06-01 Epub Date: 2026-02-01 DOI: 10.1016/j.optlaseng.2026.109671

Yexi Yang , Hubing Du , Yanjie Li , Tete Xu , Hui Wang , Gaopeng Zhang

{"title":"A highly error-tolerant phase unwrapping method based on Gray-coded light for misalignment error scenarios","authors":"Yexi Yang , Hubing Du , Yanjie Li , Tete Xu , Hui Wang , Gaopeng Zhang","doi":"10.1016/j.optlaseng.2026.109671","DOIUrl":"10.1016/j.optlaseng.2026.109671","url":null,"abstract":"<div><div>To address the issue of phase jump errors caused by the misalignment between wrapped phase truncation positions and fringe order transition positions in Gray-code-assisted phase unwrapping technique, a large number of methods for avoiding such jump errors have been developed in recent years. This paper proposes a highly error-tolerant phase unwrapping method based on Gray-coded light for misalignment error scenarios. This method first calculates original fringe orders using traditional Gray-coded method, then performs a modulo operation on these orders, and leverages the characteristic that adjacent-value orders should be equal to derive two complementary sets of fringe orders. Subsequently, using obtained original fringe orders and the critical points where the wrapped phase transitions between positive and negative values, the wrapped phase is partitioned into a series of confidence regions. Finally, phase unwrapping is conducted for each confidence sub-region, yielding a continuous absolute phase free of jump errors. Through experiments on facial height reconstruction, phase retrieval under harsh scenario, phase retrieval covering different misalignment error scenarios, and phase retrieval of complex objects, it is verified that the proposed method can extend the maximum allowable misalignment error from the existing one-third of a wrapped phase cycle to half of a wrapped phase cycle, without increasing additional Gray-coded patterns. The proposed method enhances the tolerance of the phase unwrapping method to the misalignment error, improves phase retrieval accuracy, and does not increase computational time while ensuring high precision and robustness. Therefore, it is well-suited for high-precision optical online detection scenarios.</div></div>","PeriodicalId":49719,"journal":{"name":"Optics and Lasers in Engineering","volume":"201 ","pages":"Article 109671"},"PeriodicalIF":3.7,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146189767","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}

引用次数: 0

Realization of arbitrary linear polarization conversion and wavefront modulation using chiral meta-atoms 利用手性元原子实现任意线偏振转换和波前调制

IF 3.7 2区工程技术

Optics and Lasers in Engineering Pub Date : 2026-06-01 Epub Date: 2026-02-06 DOI: 10.1016/j.optlaseng.2026.109673

Yijun Fu, Zhengyong Song

{"title":"Realization of arbitrary linear polarization conversion and wavefront modulation using chiral meta-atoms","authors":"Yijun Fu, Zhengyong Song","doi":"10.1016/j.optlaseng.2026.109673","DOIUrl":"10.1016/j.optlaseng.2026.109673","url":null,"abstract":"<div><div>Metasurfaces have broken through limitations of intrinsic properties of natural materials, which provides a revolutionary solution to challenges such as bulky volume and limited functional integration faced by traditional optical devices. Chiral metasurfaces have demonstrated unique advantages in circular polarization conversion, but achieving arbitrary linear polarization conversion and wavefront modulation still remains a challenge. This work proposes two reflective chiral meta-atoms. Meta-atom A reflects left-handed circularly polarized (LCP) wave while absorbing right-handed circularly polarized (RCP) wave, whereas meta-atom B exhibits the opposite behavior. Simulations show that designed meta-atoms exhibit extremely strong circular dichroism at 1.14 THz. When two meta-atoms are diagonally arranged into a meta-pixel, arbitrary linear polarization conversion and wavefront modulation can be synchronously achieved. As a proof of concept, we design three metasurfaces. The first and second metasurfaces can convert 0° linearly polarized (LP) wave into 45° and 90° LP wave and focus them at 1300 μm. The third metasurface realizes 0°-to-90° LP conversion and generates orbital angular momentum (OAM) beam to further demonstrate the accuracy of wavefront modulation. Our scheme provides new design concept for polarization regulation and wavefront shaping.</div></div>","PeriodicalId":49719,"journal":{"name":"Optics and Lasers in Engineering","volume":"201 ","pages":"Article 109673"},"PeriodicalIF":3.7,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146189814","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}

引用次数: 0

Towards low-noise tunable terahertz waves generation via photomixing 通过光混合技术产生低噪声可调谐太赫兹波

IF 3.7 2区工程技术

Optics and Lasers in Engineering Pub Date : 2026-06-01 Epub Date: 2026-02-02 DOI: 10.1016/j.optlaseng.2026.109625

Win Indra , Irianto , Jamil Abedalrahim Jamil Alsayaydeh , Adam Wong Yoon Khang , Nurulhalim Bin Hassim , Safarudin Gazali Herawan

引用次数: 0

Fabrication techniques of deformation carriers in extreme conditions 极端条件下变形载体的制造技术

IF 3.7 2区工程技术

Optics and Lasers in Engineering Pub Date : 2026-06-01 Epub Date: 2026-01-27 DOI: 10.1016/j.optlaseng.2026.109639

Wei He , Mingming Xie , Hanhan Jia , Sirui Mo , Jinluo Zou , Bo Liu , Qihong Fang , Huimin Xie , Jiaqiang Li , Xing Sun

{"title":"Fabrication techniques of deformation carriers in extreme conditions","authors":"Wei He , Mingming Xie , Hanhan Jia , Sirui Mo , Jinluo Zou , Bo Liu , Qihong Fang , Huimin Xie , Jiaqiang Li , Xing Sun","doi":"10.1016/j.optlaseng.2026.109639","DOIUrl":"10.1016/j.optlaseng.2026.109639","url":null,"abstract":"<div><div>In photomechanics, speckles and gratings serve as essential carriers or sensors for deformation measurement in methods including digital image correlation (DIC) and Moiré. Their fabrication quality directly influences the measurement accuracy, especially in extreme conditions, such as high-temperature and micro/nano-scale. At high temperatures, deformation carriers are prone to oxidation, degradation and ablation; concurrently, fabricating high quality and parametrically defined deformation carriers at miniature scales presents a significant challenge. This review describes recent progress and limitations in the fabrication of deformation carriers for extreme conditions, emphasizing high-temperature and micro/nano-scale. A classification and discussion of classical and state-of-the-art techniques is presented, evaluating them based on parametric fabrication capability, and their destructive or non-destructive characteristics. In addition, fabrication techniques for other extreme conditions including impact, underwater, and cryogenic temperature, are synthesized and analyzed. This review aims to provide a theoretical foundation and methodological reference for fabricating and optimizing deformation carriers, enabling reliable deformation measurements in extreme conditions.</div></div>","PeriodicalId":49719,"journal":{"name":"Optics and Lasers in Engineering","volume":"201 ","pages":"Article 109639"},"PeriodicalIF":3.7,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146079501","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}

引用次数: 0

LCVR-based broadband time-division polarimetric imaging technology in visible spectral range 基于lcvr的可见光波段宽带时分偏振成像技术

IF 3.7 2区工程技术

Optics and Lasers in Engineering Pub Date : 2026-06-01 Epub Date: 2026-01-30 DOI: 10.1016/j.optlaseng.2025.109581

Wenxu Jiang , Liyong Ren , Jian Liang

{"title":"LCVR-based broadband time-division polarimetric imaging technology in visible spectral range","authors":"Wenxu Jiang , Liyong Ren , Jian Liang","doi":"10.1016/j.optlaseng.2025.109581","DOIUrl":"10.1016/j.optlaseng.2025.109581","url":null,"abstract":"<div><div>Compared to simultaneous polarimetric imaging systems, time-division systems have unique advantages, including higher detection accuracy, superior spatial resolution, and simpler structural design, making them suitable for a wide range of applications. However, conventional time-division polarimetric imaging systems that rely on rotating optical elements often suffer from reduced reliability, while those based on liquid crystal variable retarders (LCVRs) are typically constrained to single-wavelength operation. To address these limitations, we propose a broadband time-division polarimetric imaging system that eliminates the need for rotating components. A dual-path correction framework is established to compensate for phase retardation errors caused by the wavelength dependent dispersion of the LCVR in the 450-650 nm spectral range, which enables accurate broadband polarimetric imaging across the visible spectrum. Experimental results show that the proposed system achieves an angle of polarization (AoP) measurement error ε<sub>AoP</sub> within 2.28% and a degree of polarization (DoP) measurement error ε<sub>DoP</sub> within 2.5%. This work may provide a reliable technical pathway toward time-division polarimetric imaging with enhanced stability, high precision, low noise, and free from mechanical error sources.</div></div>","PeriodicalId":49719,"journal":{"name":"Optics and Lasers in Engineering","volume":"201 ","pages":"Article 109581"},"PeriodicalIF":3.7,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146079500","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}

引用次数: 0