On-Axis Optical Trapping with Vortex Beams: The Role of the Multipolar Decomposition

物理 光学镊子 旋涡 俘获 梁(结构) 光束 涡流 电磁场 光学力 光学 粒子(生态学) 计算物理学 机械 量子力学 生态学 生物 海洋学 地质学
作者
Iker Gómez‐Viloria,Álvaro Nodar,Martín Molezuelas‐Ferreras,Jorge Olmos‐Trigo,Ángel Cifuentes,Miriam Martínez,Miguel Varga,Gabriel Molina‐Terriza
出处
期刊:ACS Photonics [American Chemical Society]
卷期号:11 (2): 626-633 被引量:4
标识
DOI:10.1021/acsphotonics.3c01499
摘要

Optical trapping is a well-established, decades old technology with applications in several fields of research. The most common scenario deals with particles that tend to be centered on the brightest part of the optical trap. Consequently, the optical forces keep the particle away from the dark zones of the beam. However, this is not the case when a focused doughnut-shaped beam generates on-axis trapping. In this system, the particle is centered on the intensity minima of the laser beam and the bright annular part lies on the periphery of the particle. Researchers have shown great interest in this phenomenon due to its advantage of reducing light interaction with trapped particles and the intriguing increase in the trapping strength. This work presents experimental and theoretical results that extend the analysis of on-axis trapping with light vortex beams. Specifically, in our experiments, we trap micron-sized spherical silica (SiO2) particles in water and we measure, through the power spectrum density method, the trap stiffness constant κ generated by vortex beams with different topological charge orders. The optical forces are calculated from the exact solutions of the electromagnetic fields provided by the generalized Lorentz–Mie theory. We show a remarkable agreement between the theoretical prediction and the experimental measurements of κ. Moreover, our numerical model gives us information about the electromagnetic fields inside the particle, offering valuable insights into the influence of the electromagnetic fields present in the vortex beam trapping scenario.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
靖哥哥发布了新的文献求助10
1秒前
李瑞卿完成签到 ,获得积分10
1秒前
dong应助宋宋采纳,获得10
1秒前
1秒前
babayaga发布了新的文献求助10
1秒前
3秒前
老迟到的盼海完成签到,获得积分20
5秒前
可爱的函函应助Myrna采纳,获得10
6秒前
6秒前
大模型应助Lily采纳,获得10
6秒前
左左发布了新的文献求助10
6秒前
el完成签到,获得积分10
6秒前
WWWUBING完成签到,获得积分10
7秒前
橙子发布了新的文献求助30
10秒前
慕青应助Amen采纳,获得10
10秒前
11秒前
可爱的函函应助甜甜沛蓝采纳,获得10
11秒前
英姑应助星期八采纳,获得10
11秒前
南兮完成签到,获得积分10
11秒前
12秒前
小二郎应助忧郁的灵竹采纳,获得10
12秒前
刘浩然完成签到,获得积分10
14秒前
16秒前
16秒前
16秒前
东耦完成签到,获得积分10
17秒前
18秒前
cyan完成签到,获得积分10
18秒前
zzzzzzzz完成签到,获得积分20
21秒前
FunHigh发布了新的文献求助10
21秒前
22秒前
22秒前
shunli完成签到,获得积分10
22秒前
WenjingziWang完成签到,获得积分10
22秒前
Amen发布了新的文献求助10
23秒前
Taemy完成签到,获得积分10
23秒前
24秒前
24秒前
佳琳有乐完成签到,获得积分10
25秒前
爆米花应助澡雪采纳,获得10
26秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
Picture Books with Same-sex Parented Families: Unintentional Censorship 700
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
Nucleophilic substitution in azasydnone-modified dinitroanisoles 500
不知道标题是什么 500
Indomethacinのヒトにおける経皮吸収 400
Effective Learning and Mental Wellbeing 400
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3975836
求助须知:如何正确求助?哪些是违规求助? 3520174
关于积分的说明 11201364
捐赠科研通 3256576
什么是DOI,文献DOI怎么找? 1798362
邀请新用户注册赠送积分活动 877539
科研通“疑难数据库(出版商)”最低求助积分说明 806426