.png){kind=icon}
返回
Structured Back Focal Plane Interferometry (SBFPI)
.png){kind=icon}
OA
AI
DOI：10.1038/s41598-019-56199-z.png)
.png){kind=icon}
.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
Back focal plane interferometry (BFPI) is one of the most straightforward and powerful methods for achieving sub-nanometer particle tracking precision at high speed (MHz). BFPI faces technical challenges that prohibit tunable expansion of linear detection range with minimal loss to sensitivity, while maintaining robustness against optical aberrations. In this paper, we devise a tunable BFPI combining a structured beam (conical wavefront) and structured detection (annular quadrant photodiode). This technique, which we termed Structured Back Focal Plane Interferometry (SBFPI), possesses three key novelties namely: extended tracking range, low loss in sensitivity, and resilience to spatial aberrations. Most importantly, the conical wavefront beam preserves the axial Gouy phase shift and lateral beam waist that can then be harnessed in a conventional BFPI system. Through a series of experimental results, we were able to tune detection sensitivity and detection range over the SBFPI parameter space. We also identified a figure of merit based on the experimental optimum that allows us to identify optimal SBPFI configurations that balance both range and sensitivity. In addition, we also studied the resilience of SBFPI against asymmetric spatial aberrations (astigmatism of up to 0.8.) along the lateral directions. The simplicity and elegance of SBFPI will accelerate its dissemination to many associated fields in optical detection, interferometry and force spectroscopy.
Keyword:
POSITION DETECTION
PARTICLE TRACKING
OPTICAL TWEEZERS
BEAM
DISPLACEMENTS
MICROSCOPY
RESOLUTION
PHASE
MODEL
AI总结
对已上传原文的论文进行重点信息的提取，主要内容包括：简要概述、研究摘要、背景介绍、关键亮点、图文解析、展望与总结。
期刊
IF:
3.9
论文数:
28.0W
被引数:
83.5W
机构
引用论文
Nanonewton optical force trap employing anti-reflection coated, high-refractive-index titania microspheres.png)
NATURE PHOTONICS
NATURE PHOTONICSIF32.9
PREAI
分享收藏Precise Three-Dimensional Scan-Free Multiple-Particle Tracking over Large Axial Ranges with Tetrapod Point Spread FunctionsNANO LETTERSOAAI
NANO LETTERSIF9.1
OAAI分享收藏Optical trapping and integration of semiconductor nanowire assemblies in water水中半导体纳米线组件的光学捕获和集成NATURE MATERIALS
NATURE MATERIALSIF38.5
PREAI
分享收藏Three-dimensional tracking of small spheres in focused laser beams: influence of the detection angular apertureOPTICS LETTERS
OPTICS LETTERSIF3.3
PREAI
分享收藏分享收藏
查看更多内容