Single long linear flat-top, double and triple optical beams formation by an azimuthally polarized laser light using a seven-zone BPPF system

IF 2.5 3区工程技术 Q1 MICROSCOPY

Micron Pub Date : 2025-02-03 DOI:10.1016/j.micron.2025.103788

K. Lalithambigai , P.M. Anbarasan , Mohd. Shkir

{"title":"Single long linear flat-top, double and triple optical beams formation by an azimuthally polarized laser light using a seven-zone BPPF system","authors":"K. Lalithambigai , P.M. Anbarasan , Mohd. Shkir","doi":"10.1016/j.micron.2025.103788","DOIUrl":null,"url":null,"abstract":"<div><div>This study explores the focusing of an azimuthally polarized laser beam with a double-ring shape as it propagates through a seven-zone Binary Phase Pupil Filtration (BPPF) system with a conventional lens, using the concept of vector diffraction. The key features of the focal region in a five-zone BPPF and a seven-zone BPPF system are analyzed and compared using mathematical findings. The commonly utilized long linear flat-top beam may be created by applying suitable angles to the seven-zone BPPF system for a conventional lens with a numerical aperture of 0.9. The intensity of the focus zones was significantly affected when the truncation parameter of the incoming polarized beams was adjusted from a lower to a higher value, generating double and triple focal ring segments. Consequently, it is a simple and novel method to adjust the spacing between focal holes, enabling the trapping of two focal segments simultaneously from the centre. This technique used in cell manipulation, molecular biology used to study the mechanical properties of DNA and proteins, and to investigate molecular motors and other biomolecules, optical engineering, optical microscopy, optical tweezers, lithography, optical micromanipulation, data storage, and beam shaping, etc.,</div></div>","PeriodicalId":18501,"journal":{"name":"Micron","volume":"191 ","pages":"Article 103788"},"PeriodicalIF":2.5000,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Micron","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S096843282500006X","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MICROSCOPY","Score":null,"Total":0}

引用次数: 0

Abstract

This study explores the focusing of an azimuthally polarized laser beam with a double-ring shape as it propagates through a seven-zone Binary Phase Pupil Filtration (BPPF) system with a conventional lens, using the concept of vector diffraction. The key features of the focal region in a five-zone BPPF and a seven-zone BPPF system are analyzed and compared using mathematical findings. The commonly utilized long linear flat-top beam may be created by applying suitable angles to the seven-zone BPPF system for a conventional lens with a numerical aperture of 0.9. The intensity of the focus zones was significantly affected when the truncation parameter of the incoming polarized beams was adjusted from a lower to a higher value, generating double and triple focal ring segments. Consequently, it is a simple and novel method to adjust the spacing between focal holes, enabling the trapping of two focal segments simultaneously from the centre. This technique used in cell manipulation, molecular biology used to study the mechanical properties of DNA and proteins, and to investigate molecular motors and other biomolecules, optical engineering, optical microscopy, optical tweezers, lithography, optical micromanipulation, data storage, and beam shaping, etc.,

查看原文本刊更多论文

求助全文

约1分钟内获得全文求助全文

来源期刊

Micron 工程技术-显微镜技术

CiteScore

4.30

自引率

4.20%

发文量

100

审稿时长

31 days

期刊介绍： Micron is an interdisciplinary forum for all work that involves new applications of microscopy or where advanced microscopy plays a central role. The journal will publish on the design, methods, application, practice or theory of microscopy and microanalysis, including reports on optical, electron-beam, X-ray microtomography, and scanning-probe systems. It also aims at the regular publication of review papers, short communications, as well as thematic issues on contemporary developments in microscopy and microanalysis. The journal embraces original research in which microscopy has contributed significantly to knowledge in biology, life science, nanoscience and nanotechnology, materials science and engineering.