{"title":"Speckle pattern analysis using differential dynamic matrix.","authors":"Mahsa Asghari, Elaheh Nazari, Mehdi Shafiei Aporvari, Vahideh Farzam Rad, Ali-Reza Moradi","doi":"10.1364/OL.564582","DOIUrl":null,"url":null,"abstract":"<p><p>Dynamic laser speckle analysis (LSA) is a sensitive, noninvasive, and remote technique that has been applied to study different phases of matter in various phenomena in life science and industry. On the other hand, differential dynamic microscopy (DDM) is an efficient method for the collective and quantitative analysis of microscopic particle suspensions. DDM uses successive recorded microscopy images to extract information about the diffusion and scattering functions. However, in several applications, the microscopy images include additional noises caused by turbulent dynamics of the sample, contaminations, or aberrations in the imaging system. Here, we extend DDM to LSA, which is like considering the extreme case of noisy images for DDM analysis. We show that DDM can provide additional analysis parameters for LSA, and, more importantly, the speckle patterns can be directly analyzed using DDM. To validate the proposed DDM-LSA technique, we apply it to the analysis of drying paint.</p>","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 19","pages":"5961-5964"},"PeriodicalIF":3.3000,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Optics letters","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1364/OL.564582","RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"OPTICS","Score":null,"Total":0}
引用次数: 0
Abstract
Dynamic laser speckle analysis (LSA) is a sensitive, noninvasive, and remote technique that has been applied to study different phases of matter in various phenomena in life science and industry. On the other hand, differential dynamic microscopy (DDM) is an efficient method for the collective and quantitative analysis of microscopic particle suspensions. DDM uses successive recorded microscopy images to extract information about the diffusion and scattering functions. However, in several applications, the microscopy images include additional noises caused by turbulent dynamics of the sample, contaminations, or aberrations in the imaging system. Here, we extend DDM to LSA, which is like considering the extreme case of noisy images for DDM analysis. We show that DDM can provide additional analysis parameters for LSA, and, more importantly, the speckle patterns can be directly analyzed using DDM. To validate the proposed DDM-LSA technique, we apply it to the analysis of drying paint.
期刊介绍：
The Optical Society (OSA) publishes high-quality, peer-reviewed articles in its portfolio of journals, which serve the full breadth of the optics and photonics community.
Optics Letters offers rapid dissemination of new results in all areas of optics with short, original, peer-reviewed communications. Optics Letters covers the latest research in optical science, including optical measurements, optical components and devices, atmospheric optics, biomedical optics, Fourier optics, integrated optics, optical processing, optoelectronics, lasers, nonlinear optics, optical storage and holography, optical coherence, polarization, quantum electronics, ultrafast optical phenomena, photonic crystals, and fiber optics. Criteria used in determining acceptability of contributions include newsworthiness to a substantial part of the optics community and the effect of rapid publication on the research of others. This journal, published twice each month, is where readers look for the latest discoveries in optics.
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