IF 3.1 3区物理与天体物理

Optik Pub Date : 2025-09-20 DOI: 10.1016/j.ijleo.2025.172542

Phamei Rumthao , Supratik Mukherjee , Alfonso Muñoz , David J. Singh , G. Vaitheeswaran

引用次数: 0

Generative Adversarial Network based Single Image Super Resolution using Deep Residual-in-Residual Dense Network 基于深度残差密集网络的生成对抗网络单幅图像超分辨率

IF 3.1 3区物理与天体物理

Optik Pub Date : 2025-09-19 DOI: 10.1016/j.ijleo.2025.172538

Khushboo Singla, Rajoo Pandey, Umesh Ghanekar

引用次数: 0

Automated optical inspection system for real-time dent defect detection in button cell batteries 用于钮扣电池凹陷缺陷实时检测的自动光学检测系统

IF 3.1 3区物理与天体物理

Optik Pub Date : 2025-09-18 DOI: 10.1016/j.ijleo.2025.172532

Li Sun , Jingyu Wang , Cong Xie , Wenli Zhang , Wei Ding

{"title":"Automated optical inspection system for real-time dent defect detection in button cell batteries","authors":"Li Sun , Jingyu Wang , Cong Xie , Wenli Zhang , Wei Ding","doi":"10.1016/j.ijleo.2025.172532","DOIUrl":"10.1016/j.ijleo.2025.172532","url":null,"abstract":"<div><div>Dent defects in button cell batteries frequently arise during production and transportation, which not only impair their aesthetic appeal but also pose safety risks. The detection of these defects is particularly challenging due to the highly reflective surfaces of the cells and the interference caused by stamped characters. To tackle these issues, an automatic optical imaging system featuring dark field lighting is developed to capture time-series images. By employing shape template matching, relative position calculation, and affine transformation, the character regions were accurately located. The threshold segmentation method is then applied to both the original and Gaussian-filtered images, excluding the character regions, to identify potential defect areas. Defect pixel areas are determined using a 200-pixel threshold. Through comparative analysis, the number of time-series images is optimized to 7, significantly enhancing defect recognition accuracy. Online testing of 150,911 batteries demonstrated a 97.87% accuracy rate for normal batteries and a 99.05% detection rate for defective ones. The proposed algorithm processes each sample in under 300 ms, satisfying the requirements for real-time industrial detection. This study presents an effective solution for the real-time monitoring of dent defects in button cell batteries, contributing to improved quality control and safety assurance in the battery manufacturing industry.</div></div>","PeriodicalId":19513,"journal":{"name":"Optik","volume":"339 ","pages":"Article 172532"},"PeriodicalIF":3.1,"publicationDate":"2025-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145109701","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

引用次数: 0

Performance investigation of quantum key distribution system through free-space optics 基于自由空间光学的量子密钥分配系统性能研究

IF 3.1 3区物理与天体物理

Optik Pub Date : 2025-09-18 DOI: 10.1016/j.ijleo.2025.172535

Aanchal Sharma, Sanmukh Kaur

引用次数: 0

Optical fiber cantilever magnetic field sensing probe based on magnetic polymer microellipsoid 基于磁性聚合物微椭球体的光纤悬臂式磁场传感探头

IF 3.1 3区物理与天体物理

Optik Pub Date : 2025-09-17 DOI: 10.1016/j.ijleo.2025.172539

Xiaowei Li, Shanshan Li, Aimin Cong, Lingyu Du, Min Li

{"title":"Optical fiber cantilever magnetic field sensing probe based on magnetic polymer microellipsoid","authors":"Xiaowei Li, Shanshan Li, Aimin Cong, Lingyu Du, Min Li","doi":"10.1016/j.ijleo.2025.172539","DOIUrl":"10.1016/j.ijleo.2025.172539","url":null,"abstract":"<div><div>In this paper, a highly sensitive fiber cantilever magnetic field sensing probe based on magnetic polymer microellipsoid is proposed. The preparation process of the fiber sensing probe is simple, and its cost is low. First, a fiber cantilever is fused at the end of the multimode fiber. Then, a magnetic polymer microellipsoid is coated at the end of the fiber cantilever, and a fiber optic Michelson interferometer is obtained. The incident light is reflected and transmitted at the interfaces between the multimode fiber and the air, as well as the interface between the multimode fiber and the fiber cantilever. One part of the incident light is reflected at the interface between multimode optical fiber core and air. Another part of incident light is transmitted and continues to travel forward along the optical fiber cantilever, and is reflected at the interface between fiber cantilever and air. The higher-order modes are excited. The reflected beams interfere with each other inside the multimode fiber to form a michelson interference spectrum. The fiber cantilever sensing probe with the length of 663 μm and the diameter of 37 μm is investigated in detailed. The changes of the center wavelength of the interference peak near 1440 nm with magnetic field intensity varying are recorded, and the magnetic sensitivity of the proposed sensor probe reaches −0.80991 nm/mT. It will has a important application prospect in many fields such as medical diagnosis, motor control system and industrial automation.</div></div>","PeriodicalId":19513,"journal":{"name":"Optik","volume":"339 ","pages":"Article 172539"},"PeriodicalIF":3.1,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145105672","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

引用次数: 0

Theoretical investigation of space division multiplexing capacity of unaltered and D-shaped multimode step-index POF 不变和d型多模阶跃折射率点of空分复用能力的理论研究

IF 3.1 3区物理与天体物理

Optik Pub Date : 2025-09-16 DOI: 10.1016/j.ijleo.2025.172541

Svetislav Savović , Konstantinos Aidinis

引用次数: 0

Effect of antisolvent dripping time on the photodetection performance of silicon/MAPbI3 heterojunction 抗溶剂滴注时间对硅/MAPbI3异质结光检测性能的影响

IF 3.1 3区物理与天体物理

Optik Pub Date : 2025-09-15 DOI: 10.1016/j.ijleo.2025.172537

Zeinab PourMohammadi, Fatemeh Dehghan Nayeri, Rouhollah Azimirad

{"title":"Effect of antisolvent dripping time on the photodetection performance of silicon/MAPbI3 heterojunction","authors":"Zeinab PourMohammadi, Fatemeh Dehghan Nayeri, Rouhollah Azimirad","doi":"10.1016/j.ijleo.2025.172537","DOIUrl":"10.1016/j.ijleo.2025.172537","url":null,"abstract":"<div><div>In this work, we developed a silicon/CH<sub>3</sub>NH<sub>3</sub>PbI<sub>3</sub> (MAPbI<sub>3</sub>) heterojunction-based photodetector under ambient conditions using the antisolvent treatment method. To achieve the best morphology and coverage in the perovskite thin film, we investigated the antisolvent dripping time by tracking the turbid point during the spin coating of the perovskite precursor solution on the substrate. By introducing the antisolvent in the processing window just before reaching the turbid point, we successfully obtained a dense MAPbI<sub>3</sub> film with improved surface coverage, exhibiting elevated absorption within the wavelength range of 300–550 nm. The performance of silicon/MAPbI<sub>3</sub> heterojunction-based photodetectors is also influenced by the antisolvent dripping times relative to the turbid point. The dark current of the champion device is suppressed by about ten orders of magnitude when the antisolvent treatment is applied a second before the turbid point. The optimal device demonstrates a responsivity of 30 mA/W and a specific detectivity exceeding 10 ¹ ⁰ Jones at -9V under 25 mW/cm² light illumination at 530 nm.</div></div>","PeriodicalId":19513,"journal":{"name":"Optik","volume":"339 ","pages":"Article 172537"},"PeriodicalIF":3.1,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145105671","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

引用次数: 0

Analysis on nanoparticles induced alignment stability of dye doped liquid crystal at varying temperatures 纳米颗粒诱导染料掺杂液晶在不同温度下的排列稳定性分析

IF 3.1 3区物理与天体物理

Optik Pub Date : 2025-09-15 DOI: 10.1016/j.ijleo.2025.172536

Chinky , Pankaj Kumar

{"title":"Analysis on nanoparticles induced alignment stability of dye doped liquid crystal at varying temperatures","authors":"Chinky , Pankaj Kumar","doi":"10.1016/j.ijleo.2025.172536","DOIUrl":"10.1016/j.ijleo.2025.172536","url":null,"abstract":"<div><div>In this paper, an analysis on the stability of zinc oxide (ZnO) nanoparticles (NPs) induced homeotropic alignment (HA) of dichroic dye doped nematic liquid crystal (NLC) at varying temperatures has been carried out. Three sample cells, namely conventional PI coated homeotropically aligned liquid crystal (HALC) (S1), NPs induced HALC (S2), and dye doped NPs induced HALC (S3) were prepared. Further, their morphological and electro-optical (E-O) characteristics were determined between temperature ranges from 20 °C to 60 °C. Findings illustrate that there are no observable textural changes in terms of background consistency, phase transitions, and uniformity in coloration across all the cells. Also, with increasing electric field, the liquid crystal (LC) molecules exhibit uniform switching behavior up to 60 °C, confirming that the performance of the HALC device remains unaffected under elevated thermal conditions. Comparatively, cell S1 shows larger threshold and operating voltages, whereas cell S3 exhibits the most thermally stable alignment with low threshold and operating voltages with highest contrast ratio (CR) at all temperatures. Thus, NPs induced dichroic dye doped HALC cells have potential to contribute to the development of thermally reliable LC based devices.</div></div>","PeriodicalId":19513,"journal":{"name":"Optik","volume":"339 ","pages":"Article 172536"},"PeriodicalIF":3.1,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145105674","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

引用次数: 0

Listening to ultrashort laser pulses to determine their characteristics 聆听超短激光脉冲以确定其特性

IF 3.1 3区物理与天体物理

Optik Pub Date : 2025-09-13 DOI: 10.1016/j.ijleo.2025.172528

How-Luen Hsin , Wei-Hong Haung , Xin-Yun Chang , Yen-Chen Ko , Hao-Keng Wei , Zai-Wen Chen , Chih-Wei Luo

{"title":"Listening to ultrashort laser pulses to determine their characteristics","authors":"How-Luen Hsin , Wei-Hong Haung , Xin-Yun Chang , Yen-Chen Ko , Hao-Keng Wei , Zai-Wen Chen , Chih-Wei Luo","doi":"10.1016/j.ijleo.2025.172528","DOIUrl":"10.1016/j.ijleo.2025.172528","url":null,"abstract":"<div><div>Since the physical principle behind Camera Obscura was first described by Mozi during the 5th century BC, stating in Mo Jing (墨經, is an ancient Chinese philosophical and scientific text attributed to the Mohist school): “Light rays travel straight, like arrows; when passing through a small hole, the lower part of an object projects an image upward, and the upper part projects an image downward.” (景光之人煦若射，下者之入也高，高者之入也下。), people believed that light could only be detected by “seeing.” However, this study breaks this philosophy for hundreds of years and demonstrates that light pulse profile can also be detected by “LISTENING.” Here, we use femtosecond laser pulses to generate air plasma and sound waves via the photoacoustic effect. A nonlinear crystal-free sound autocorrelation is developed to detect these acoustic signals. The autocorrelated sound (AS) signals are measured to determine the characteristics of ultrashort laser pulses and air plasma. Potential applications for this laser-induced sound autocorrelation include a method for ultrafast characterization of laser pulses and as a diagnostic technology to determine the dynamic interaction between plasma and electromagnetic (EM) waves.</div></div>","PeriodicalId":19513,"journal":{"name":"Optik","volume":"339 ","pages":"Article 172528"},"PeriodicalIF":3.1,"publicationDate":"2025-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145105673","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

引用次数: 0

Quick and simultaneous measurement of Phase retardation and azimuth of arbitrary wave plate based on phase compensation and dual-frequency laser heterodyne interferometry 基于相位补偿和双频激光外差干涉的任意波片相位滞后和方位角的快速同步测量

IF 3.1 3区物理与天体物理

Optik Pub Date : 2025-09-13 DOI: 10.1016/j.ijleo.2025.172529

Qianghua Chen , Jie Mu , Yu Guan , Duo Shao , Fuming Liu , Hongbo Lv , Lina Si , Feng Wang

{"title":"Quick and simultaneous measurement of Phase retardation and azimuth of arbitrary wave plate based on phase compensation and dual-frequency laser heterodyne interferometry","authors":"Qianghua Chen , Jie Mu , Yu Guan , Duo Shao , Fuming Liu , Hongbo Lv , Lina Si , Feng Wang","doi":"10.1016/j.ijleo.2025.172529","DOIUrl":"10.1016/j.ijleo.2025.172529","url":null,"abstract":"<div><div>In this paper, a simple, quick and ingenious wave plate (WP) measurement method based on phase compensation and dual-frequency laser heterodyne interferometry is proposed. A key rotatable half wave plate (HWP) is used for modulating the phase of the measurement signal and compensate it to the maximum and minimum values in sequence. By only measuring the extreme values of phase difference change between the measurement and the reference signal as well as fast axis azimuth of the HWP, the phase retardation and fast axis azimuth of arbitrary WP can be derived simultaneously and quickly. The phase retardation’s measurement avoids the influence of the azimuth positioning accuracy of optical components that typically exists in many methods. The signal processing adopts phase detection means, which means higher accuracy than that by intensity detection means. The reference and measurement paths both contain <em>p</em> and <em>s</em> polarization components, so the system has the common optical path property, which means good stability. Error analysis shows the measurement uncertainty of the phase retardation is about 3.2′, and that of the fast axis azimuth is about 5'' (arcsecond) under existing experimental conditions. The experimental comparison results show good agreement with those by other two methods.</div></div>","PeriodicalId":19513,"journal":{"name":"Optik","volume":"339 ","pages":"Article 172529"},"PeriodicalIF":3.1,"publicationDate":"2025-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145105668","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

引用次数: 0

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