Optics and Lasers in Engineering最新文献

Generation of metal particle contaminants excited from ablated aluminum alloys by stray light 杂散光激发烧蚀铝合金中金属颗粒污染物的产生

IF 3.5 2区工程技术

Optics and Lasers in Engineering Pub Date : 2025-07-15 DOI: 10.1016/j.optlaseng.2025.109216

Chuan Ma , Shuo Hu , Siyu Wu , Haozhe Liu , Chenzhuo Wang , Bo Dong , Shuai Zhang , Yangke Gao , Lihua Lu , Jiaxuan Chen

{"title":"Generation of metal particle contaminants excited from ablated aluminum alloys by stray light","authors":"Chuan Ma , Shuo Hu , Siyu Wu , Haozhe Liu , Chenzhuo Wang , Bo Dong , Shuai Zhang , Yangke Gao , Lihua Lu , Jiaxuan Chen","doi":"10.1016/j.optlaseng.2025.109216","DOIUrl":"10.1016/j.optlaseng.2025.109216","url":null,"abstract":"<div><div>The ablation of aluminum alloy structural components by stray light during operation of the inertial confinement fusion (ICF) device results in the excitation of high-temperature, supersonic metal particulate contamination. However, previous research does not examine the mechanism by which metal particulate contaminants are generated during the ablation process. A three-phase (solid-liquid-gas) ablation model is developed employing the level set method (LSM) based on phase transition theory with improved Hertz-Langmuir functions to clarify the generation mechanism of metal particles. Comparing to the identical physical quantities considering the ambient pressure term of above ablation model, the maximum of the evaporation rate and plume velocity at the ablation zone calculated by previous oversimplified models are underestimated by ∼1380 kg m⁻<sup>2</sup> s⁻<sup>1</sup> and ∼450 m s⁻<sup>1</sup>. The damage extent of the target is favorably characterized into four concentric banded areas extending to the ablated periphery by accounting for the thermal damage principle with proof-of-principle experiments. It is revealed that two typical metal particulate pollutants are generated during ablation process. The aggregated particles in the flow recast zone and the splash breakup zone are ejected due to the portion of the stagnation pressure of the melt exceeding the surface tension. The micro-/nanometer particulates distributed throughout the ablation zone are attributed to condensation of the vapor plumes and solidification of minute droplets. The research in this paper provides guidance for elucidating the influence of stray light laser on the capacity of the ICF device and effect of optical components precursor on laser-induced damage threshold (LIDT).</div></div>","PeriodicalId":49719,"journal":{"name":"Optics and Lasers in Engineering","volume":"194 ","pages":"Article 109216"},"PeriodicalIF":3.5,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144632645","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

Accurate channel-resolved spectral characterization of LED arrays based on phase-sensitive detection 基于相敏检测的LED阵列精确通道分辨光谱表征

IF 3.5 2区工程技术

Optics and Lasers in Engineering Pub Date : 2025-07-15 DOI: 10.1016/j.optlaseng.2025.109218

Renzhu Zhang , Lihong Zhu , Yaqi Cai , Yayong Chen , Nuoyi Fu , Yuan Shi , Changdong Tong , Guolong Chen , Weijie Guo , Tingzhu Wu , Zhong Chen , Yijun Lu

{"title":"Accurate channel-resolved spectral characterization of LED arrays based on phase-sensitive detection","authors":"Renzhu Zhang , Lihong Zhu , Yaqi Cai , Yayong Chen , Nuoyi Fu , Yuan Shi , Changdong Tong , Guolong Chen , Weijie Guo , Tingzhu Wu , Zhong Chen , Yijun Lu","doi":"10.1016/j.optlaseng.2025.109218","DOIUrl":"10.1016/j.optlaseng.2025.109218","url":null,"abstract":"<div><div>With the increasing integration of multi-wavelength chips and intelligent control technologies, light-emitting diode (LED) arrays have become widely adopted in advanced lighting and display systems. However, accurately characterizing the spectral contribution of individual LEDs under actual operating conditions remains a significant challenge due to photothermal coupling, and the limitations of conventional measurement approaches that rely on single-channel activation or physical masking. In this study, we present a spectral measurement method for LED arrays based on phase-sensitive detection, in which unique modulation signals are assigned to each LED and lock-in amplification is used to extract channel-resolved spectra while all LEDs are operating simultaneously. This enables spectral decomposition under real operating conditions and supports the construction of a nonlinear spectral synthesis model that accounts for photothermal interactions. The model achieves a spectral optical power prediction error below 1.2 %. Furthermore, by incorporating Grassmann’s color matching law and constraining the Standard Deviation of Color Matching (SDCM), optimal duty cycles can be determined to ensure chromatic stability. As a representative application, we demonstrate several lighting scenes—relaxation, working, and low-blue-light—using an RGBW LED module, achieving a wide correlated color temperature range (2500–6500 K), adjustable luminous flux (20–140 lm), high color rendering index (CRI), and low blue light hazard energy (BLHE). This work offers a robust system for spectral measurement, modeling, and precise control of LED arrays, with broad applicability in intelligent lighting and spectral calibration systems.</div></div>","PeriodicalId":49719,"journal":{"name":"Optics and Lasers in Engineering","volume":"194 ","pages":"Article 109218"},"PeriodicalIF":3.5,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144632747","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

An efficient 3D measurement method for high dynamic range objects based on polarization misaligned code fusion phase-shift encoding 一种基于偏振失调码融合相移编码的高动态范围目标三维测量方法

IF 3.5 2区工程技术

Optics and Lasers in Engineering Pub Date : 2025-07-14 DOI: 10.1016/j.optlaseng.2025.109188

Zhenmin Zhu , Qiang Liu , Ming Yang , Qiang Hu , Kang Ren , Jiahui Liu

{"title":"An efficient 3D measurement method for high dynamic range objects based on polarization misaligned code fusion phase-shift encoding","authors":"Zhenmin Zhu , Qiang Liu , Ming Yang , Qiang Hu , Kang Ren , Jiahui Liu","doi":"10.1016/j.optlaseng.2025.109188","DOIUrl":"10.1016/j.optlaseng.2025.109188","url":null,"abstract":"<div><div>Structured light 3D measurement technology is widely applied in various fields. However, in the measurement of high dynamic range (HDR) surface objects, traditional approaches often encounter measurement errors due to reflective interference in highlight regions, and require multiple projection patterns to complete 3D reconstruction, reducing efficiency. To address these issues, this paper presents a polarization misaligned code fusion phase-shift (PFPS) approach, aimed at improving the measurement accuracy and reconstruction efficiency for HDR surface objects. This approach uses the polarization state of light for encoding information to achieve more stable phase unwrapping and leverages polarization characteristics to cleverly fuse phase-shift fringe patterns with gray-code fringe patterns. The results of the experiment demonstrate that the PFPS approach performs better in environments with ambient light interference and can effectively reconstruct objects with complex geometries. Compared with traditional approaches, PFPS not only offers improved precision but also boosts efficiency by approximately 56 %, requiring only four projected patterns for complete 3D reconstruction. This approach provides a highly effective and dependable solution for measuring HDR objects.</div></div>","PeriodicalId":49719,"journal":{"name":"Optics and Lasers in Engineering","volume":"194 ","pages":"Article 109188"},"PeriodicalIF":3.5,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144623630","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

Research on freeform surface detection by high precision normal measurement method based on laser confocal fixed-focus 基于激光共聚焦定焦的高精度法向测量法检测自由曲面研究

IF 3.5 2区工程技术

Optics and Lasers in Engineering Pub Date : 2025-07-14 DOI: 10.1016/j.optlaseng.2025.109210

Yingqi Tang , Ronghui Ying , Yuhan Liu , Han Cui , Lirong Qiu , Weiqian Zhao

{"title":"Research on freeform surface detection by high precision normal measurement method based on laser confocal fixed-focus","authors":"Yingqi Tang , Ronghui Ying , Yuhan Liu , Han Cui , Lirong Qiu , Weiqian Zhao","doi":"10.1016/j.optlaseng.2025.109210","DOIUrl":"10.1016/j.optlaseng.2025.109210","url":null,"abstract":"<div><div>To address the issue of freeform surface profile scanning measurement relying on high-precision linear motion datum, this paper proposes a high-precision normal vector measurement method based on laser confocal fixed-focus (NVM-LCFF) for freeform surface detection. This method utilizes the precise correspondence between the peak position of laser confocal axial response and objective lens focus. Through axial scanning, it simultaneously acquires both the laser confocal axial response and the spot centroid position detected by the position-sensitive detector (PSD). Capitalizing on the spot centroid measurement accuracy at the focus is the highest, this method acquires spot centroid at the focus by computationally the focus position of the laser confocal axial response, and effectively eliminates defocus-induced errors in centroid positioning. By leveraging the rotation-translation invariance of distances between sampling points and angles between normal vectors of sampling points. This method performs pre-registration by pre-scanning the coordinates and normal vectors of at least 4 sampling points. Through nonlinear least-squares optimization, an initial estimation of the position of freeform surface is obtained, thereby substantially reducing the precision requirements of position adjustment. Initial experimental verification demonstrates that this approach achieves freeform surface measurement with accuracy better than ±50 nm, effectively reducing the influence of straightness errors on measurement accuracy, and eliminating the dependence on the ultra-precise height measurement references in traditional freeform surface metrology.</div></div>","PeriodicalId":49719,"journal":{"name":"Optics and Lasers in Engineering","volume":"194 ","pages":"Article 109210"},"PeriodicalIF":3.5,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144623628","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

Improved acquisition performance of inter-satellite laser communication system through non-mechanical adaptive beam control 采用非机械自适应波束控制提高星间激光通信系统的捕获性能

IF 3.5 2区工程技术

Optics and Lasers in Engineering Pub Date : 2025-07-14 DOI: 10.1016/j.optlaseng.2025.109217

Zhidong Wen , Yu Hou , Yang Chen , Siyuan Yu , Zhenzhao Xu , Feng Li , Haining Yang , Kunpeng Zhang , Zhe Zhang , Li Zhang , Qi Song , Xurui Peng , Song Yue , Zichen Zhang

{"title":"Improved acquisition performance of inter-satellite laser communication system through non-mechanical adaptive beam control","authors":"Zhidong Wen , Yu Hou , Yang Chen , Siyuan Yu , Zhenzhao Xu , Feng Li , Haining Yang , Kunpeng Zhang , Zhe Zhang , Li Zhang , Qi Song , Xurui Peng , Song Yue , Zichen Zhang","doi":"10.1016/j.optlaseng.2025.109217","DOIUrl":"10.1016/j.optlaseng.2025.109217","url":null,"abstract":"<div><div>Laser link exhibits significant potential to be applied to establish the inter-satellite optical communication network due to its high capacity and bandwidth. However, small divergence of the laser beam brings challenges to acquire the receiver with platform vibration, which may result in an acquisition failure or long acquisition time. Previous investigations have not systematically explored the adaptive beam control technology, which is an effective solution to improve acquisition performance of inter-satellite laser communication. The related analytical model and experiments are presented in this paper. The analytical model for variable divergence scanning along different trajectories is proposed to predict more precisely the acquisition failure probability and the acquisition time. To achieve the adaptive beam control nonmechanically, the lens based on liquid crystal on silicon (LCoS) is employed innovatively in the laser communication system. The tunable divergence and improved acquisition performance are validated experimentally. The large tunable range (0.423 - 58 mrad), high stability (±4 µrad) and easy-integration of LCoS lens make it satisfy requirements of satellite. This research contributes to improve the acquisition performance of inter-satellite laser communication with adaptive beam, offering solutions for the future satellite optical network.</div></div>","PeriodicalId":49719,"journal":{"name":"Optics and Lasers in Engineering","volume":"194 ","pages":"Article 109217"},"PeriodicalIF":3.5,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144623629","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

Characterizing lateral distribution of complex refractive index based on quantitative amplitude-phase imaging (QAPI) 基于定量幅相成像（QAPI）的复折射率横向分布表征

IF 3.5 2区工程技术

Optics and Lasers in Engineering Pub Date : 2025-07-12 DOI: 10.1016/j.optlaseng.2025.109199

Zhe Yu , Wenyu Chen , Jiamin Liu , Jinsong Zhang , Yuhong Guo , Honggang Gu , Zhengqiong Dong , Lei Nie , Hao Jiang , Hui Deng , Shiyuan Liu , Jinlong Zhu

{"title":"Characterizing lateral distribution of complex refractive index based on quantitative amplitude-phase imaging (QAPI)","authors":"Zhe Yu , Wenyu Chen , Jiamin Liu , Jinsong Zhang , Yuhong Guo , Honggang Gu , Zhengqiong Dong , Lei Nie , Hao Jiang , Hui Deng , Shiyuan Liu , Jinlong Zhu","doi":"10.1016/j.optlaseng.2025.109199","DOIUrl":"10.1016/j.optlaseng.2025.109199","url":null,"abstract":"<div><div>Accurate characterization of the complex refractive index is crucial for designing and optimizing optical devices. Existing methods for characterizing the complex refractive index, such as spectral-based characterization techniques, primarily focus on determining the refractive index of uniform materials, but face challenges in measuring the spatial distribution and achieving high efficiency. To tackle the problem, we propose a novel method based on quantitative amplitude-phase imaging (QAPI) for complex refractive index measurement. By incorporating a physical model, this method enables efficient reconstruction of the lateral distribution of the complex refractive index in a multipixel imaging setup, offering fast acquisition, high resolution, and a large field of view. The feasibility of the proposed method has been validated through both numerical simulations and experiments. Finally, the method is applied to experimentally characterize the complex refractive index distribution of Sb<sub>2</sub>S<sub>3</sub> films after laser-induced phase transition, demonstrating its potential for practical material characterization and process monitoring in advanced manufacturing.</div></div>","PeriodicalId":49719,"journal":{"name":"Optics and Lasers in Engineering","volume":"194 ","pages":"Article 109199"},"PeriodicalIF":3.5,"publicationDate":"2025-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144604937","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

Dynamic expansion of viewing zones in light field displays using an angular-aligned lens array and adaptive eye-tracking module for beam steering 使用角度对准透镜阵列和自适应眼动跟踪模块进行光束控制的光场显示器中观看区域的动态扩展

IF 3.5 2区工程技术

Optics and Lasers in Engineering Pub Date : 2025-07-12 DOI: 10.1016/j.optlaseng.2025.109219

Munkh-Uchral Erdenebat , Erkhembaatar Dashdavaa , Tuvshinjargal Amgalan , Nam Kim , Jin-Hyeok Seo , Min-Seok Kim , Jun Do , Anar Khuderchuluun , Kanghee Won , Hak-Rin Kim

{"title":"Dynamic expansion of viewing zones in light field displays using an angular-aligned lens array and adaptive eye-tracking module for beam steering","authors":"Munkh-Uchral Erdenebat , Erkhembaatar Dashdavaa , Tuvshinjargal Amgalan , Nam Kim , Jin-Hyeok Seo , Min-Seok Kim , Jun Do , Anar Khuderchuluun , Kanghee Won , Hak-Rin Kim","doi":"10.1016/j.optlaseng.2025.109219","DOIUrl":"10.1016/j.optlaseng.2025.109219","url":null,"abstract":"<div><div>We propose an advanced light field display system that dynamically expands the effective viewing zone by integrating an angular-aligned lens array (AALA), a compact electro-dynamic micro beam deflector (μBD), and a deep learning-based adaptive eye-tracking (AET) module. By steering light toward selectively activated segments of the AALA based on the observer’s position, the system significantly broadens the horizontal field-of-view (FoV) while maintaining high three-dimensional (3D) image fidelity. To achieve this functionality, a miniaturized μBD is custom-designed for real-time beam steering, and the AET module is optimized for fast and accurate lateral eye-tracking. As the observer moves laterally, the system adaptively directs the appropriate pre-generated elemental image array (EIA) to the corresponding AALA segment, enabling continuous and seamless 3D visualization across the extended FoV. The viewing zones of the proposed system are carefully designed to prevent overlapping between reconstructed images in adjacent zones. In particular, in the dynamically switched viewpoint state, the proposed system is designed such that non-diffracted ray noise, originating from the beam steering efficiency limits of the μBD, is sufficiently suppressed from the observer’s switched pupil position in the side viewing zones. Experimental results demonstrate that this architecture provides a scalable and effective solution for overcoming the inherent FoV limitations of conventional light field displays.</div></div>","PeriodicalId":49719,"journal":{"name":"Optics and Lasers in Engineering","volume":"194 ","pages":"Article 109219"},"PeriodicalIF":3.5,"publicationDate":"2025-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144614235","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

Recent advances in Performance Enhancement Technologies for Structured Illumination Microscopy: A Comprehensive Review 结构照明显微镜性能增强技术的最新进展：综述

IF 3.5 2区工程技术

Optics and Lasers in Engineering Pub Date : 2025-07-12 DOI: 10.1016/j.optlaseng.2025.109203

Ying Long, Xiaomin Zheng, Yuye Wang, Peng Du, Xinran Li, Jiajie Chen, Yonghong Shao

{"title":"Recent advances in Performance Enhancement Technologies for Structured Illumination Microscopy: A Comprehensive Review","authors":"Ying Long, Xiaomin Zheng, Yuye Wang, Peng Du, Xinran Li, Jiajie Chen, Yonghong Shao","doi":"10.1016/j.optlaseng.2025.109203","DOIUrl":"10.1016/j.optlaseng.2025.109203","url":null,"abstract":"<div><div>Structured Illumination Microscopy (SIM) surpasses the diffraction limit by utilizing structured illumination to shift high-frequency information of the sample into the passband of the optical system, enabling super-resolution imaging. With its advantages of low excitation intensity, compatibility with a wide range of fluorescent dyes, and rapid wide-field imaging capabilities, SIM has become a widely adopted technique for super-resolution imaging of living cells. In this review, the working principles, reconstruction methods, and typical experimental setup of conventional SIM are introduced. Recognizing the breadth of the SIM field and its rapid evolution across optics, hardware, and algorithms, the review emphasizes recent advances in optical technologies and hardware innovations, while algorithmic developments, though crucial, receive less detailed coverage. Then, the advancements of wide-field SIM in resolution enhancement, multicolor imaging, and axial resolution improvement are explored. Next, we present the latest development of point-scanning SIM. Finally, the characteristics of different types of SIM are summarized, along with an outlook on future challenges and trends of development in leveraging SIM for various imaging applications.</div></div>","PeriodicalId":49719,"journal":{"name":"Optics and Lasers in Engineering","volume":"194 ","pages":"Article 109203"},"PeriodicalIF":3.5,"publicationDate":"2025-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144614240","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

Holistic design of optical phased arrays with wide beam scanning range and high side mode suppression ratio using an improved nutcracker optimization algorithm 采用改进的胡桃夹子优化算法进行宽波束扫描范围和高侧模抑制比的光学相控阵整体设计

IF 3.5 2区工程技术

Optics and Lasers in Engineering Pub Date : 2025-07-12 DOI: 10.1016/j.optlaseng.2025.109220

Zhuangzhuang Zang , Junjie Wu , Qingzhong Huang , Xinliang Zhang

{"title":"Holistic design of optical phased arrays with wide beam scanning range and high side mode suppression ratio using an improved nutcracker optimization algorithm","authors":"Zhuangzhuang Zang , Junjie Wu , Qingzhong Huang , Xinliang Zhang","doi":"10.1016/j.optlaseng.2025.109220","DOIUrl":"10.1016/j.optlaseng.2025.109220","url":null,"abstract":"<div><div>We propose a hybrid-strategy improved nutcracker optimization algorithm (INOA) with a multi-fitness function to design a non-uniform optical phased array (OPA) with optimized antenna spacing distribution for a wide steering angle and high side mode suppression ratio (SMSR). The global search capability is enhanced by incorporating the good point set initialization and t-distribution perturbation. INOA achieves higher convergence accuracy and faster convergence speed than genetic algorithm (GA) and particle swarm optimization (PSO) algorithm. The results show that INOA requires >60 times and 8 times fewer iterations than GA and PSO, respectively, to reach the same fitness value. In addition, INOA is used to optimize the antenna phase distribution of the non-uniform OPA at different beam steering angles. Using this approach, we design a high-performance 128-element OPA, as an example, achieving a beam scanning range of ±85° and a SMSR of 14.67 dB. Compared to traditional design methods, the proposed approach improves the SMSR by 3.48 dB at 80° and 3.42 dB at 85°, while achieving an improvement of over 6 % in power in the main lobe at large steering angles. Furthermore, we investigated the influence of non-uniform excitation amplitude on the SMSR. It is found that our design has a high tolerance to fabrication error.</div></div>","PeriodicalId":49719,"journal":{"name":"Optics and Lasers in Engineering","volume":"194 ","pages":"Article 109220"},"PeriodicalIF":3.5,"publicationDate":"2025-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144614233","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

Label-free chromosome identification in bovine sperm cells using quantitative phase microscopy 用定量相显微镜鉴定牛精子细胞的无标记染色体

IF 3.5 2区工程技术

Optics and Lasers in Engineering Pub Date : 2025-07-12 DOI: 10.1016/j.optlaseng.2025.109221

Harpreet Kaur , Sunil Bhatt , Dinesh Saini , Aman Kumar , Sandeep Kumar Jha , Satish Kumar Dubey , Dalip Singh Mehta

{"title":"Label-free chromosome identification in bovine sperm cells using quantitative phase microscopy","authors":"Harpreet Kaur , Sunil Bhatt , Dinesh Saini , Aman Kumar , Sandeep Kumar Jha , Satish Kumar Dubey , Dalip Singh Mehta","doi":"10.1016/j.optlaseng.2025.109221","DOIUrl":"10.1016/j.optlaseng.2025.109221","url":null,"abstract":"<div><div>Sperm sex sorting technology allows dairy farmers to control the sex of their calves, improving herd management, reducing inefficiencies, and enhancing economic viability in large-scale animal reproduction. The most widely used method, flow cytometry, relies on fluorescence-based sorting, but this approach can compromise sperm viability and raise concerns about long-term genetic effects. Additionally, validation of sorted sperm typically involves bright-field microscopy and computer-assisted analysis, which provide only qualitative assessments of motility and morphology. This study introduces a novel, label-free approach using partially spatially coherent light-based quantitative phase microscopy (QPM) to differentiate X- and Y-chromosome-bearing spermatozoa. The technique reconstructs phase maps to quantify differences in optical properties and biological characteristics between X- and Y-sperm, eliminating the need for invasive labeling. We use statistical analysis on X-sorted and unsorted spermatozoa to form a basis for sorting X and Y chromosomes with high purity. Beyond chromosome differentiation, this technique enables precise morphological analysis of bovine sperm, including head length, width, area, ellipticity, elongation, perimeter, roughness, thickness, and volume.</div></div>","PeriodicalId":49719,"journal":{"name":"Optics and Lasers in Engineering","volume":"194 ","pages":"Article 109221"},"PeriodicalIF":3.5,"publicationDate":"2025-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144614234","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