Redistributing energy flow and polarization of a focused azimuthally polarized beam with rotationally symmetric sector-shaped obstacles

2012 ◽  
Vol 37 (6) ◽  
pp. 1041 ◽  
Author(s):  
Xiangyang Jiao ◽  
Sheng Liu ◽  
Qian Wang ◽  
Xuetao Gan ◽  
Peng Li ◽  
...  
Keyword(s):  
Energy Flow ◽  
Rotationally Symmetric ◽  
Polarized Beam ◽  
Azimuthally Polarized Beam

Manipulation of the transverse energy flow of azimuthally polarized beam in tight focusing system

2019 ◽  
Vol 431 ◽  
pp. 174-180 ◽  
Author(s):  
Zhongsheng Man ◽  
Xiaoyu Li ◽  
Shuoshuo Zhang ◽  
Zhidong Bai ◽  
Yudong Lyu ◽  
...  
Keyword(s):  
Energy Flow ◽  
Transverse Energy ◽  
Tight Focusing ◽  
Polarized Beam ◽  
Azimuthally Polarized Beam ◽  
Transverse Energy Flow

scholarly journals Generation of Multiple Focal Hole Segments Using Double-Ring Shaped Azimuthally Polarized Beam

2013 ◽  
Vol 2013 ◽  
pp. 1-4 ◽  
Author(s):  
K. Lalithambigai ◽  
R. C. Saraswathi ◽  
P. M. Anbarasan ◽  
K. B. Rajesh ◽  
Z. Jaroszewicz
Keyword(s):  
Optical Axis ◽  
Optical Manipulation ◽  
Processing Technologies ◽  
Binary Phase ◽  
Double Ring ◽  
Phase Filter ◽  
Polarized Beam ◽  
Azimuthally Polarized Beam ◽  
High Na Lens ◽  
Focusing Properties

We investigated the focusing properties of a double-ring-shaped azimuthally polarized beam tightly focused with a high NA lens and a binary phase filter. We observe that by using 3 belts and 5 belts binary phase filters novel focal patterns including splitting of focal rings and multiring focus are obtained. We also found that a suitably designed phase structure can shift the focal rings along optical axis. The author expects such investigation is worthwhile for optical manipulation and material processing technologies.

Phase control of an azimuthally polarized beam synthesized by an array of fiber lasers

2021 ◽  
Author(s):  
Egor Adamov ◽  
Valerii Aksenov ◽  
Vadim Dudorov ◽  
Valerii Kolosov ◽  
Mikhail Levitskii
Keyword(s):  
Fiber Lasers ◽  
Phase Control ◽  
Polarized Beam ◽  
Azimuthally Polarized Beam

Phase encoding for sharper focus of the azimuthally polarized beam

2010 ◽  
Vol 35 (23) ◽  
pp. 3928 ◽  
Author(s):  
Xiang Hao ◽  
Cuifang Kuang ◽  
Tingting Wang ◽  
Xu Liu
Keyword(s):  
Phase Encoding ◽  
Polarized Beam ◽  
Azimuthally Polarized Beam

scholarly journals Sharper fluorescent super-resolution spot generated by azimuthally polarized beam in STED microscopy

2012 ◽  
Vol 20 (16) ◽  
pp. 17653 ◽  
Author(s):  
Yi Xue ◽  
Cuifang Kuang ◽  
Shuai Li ◽  
Zhaotai Gu ◽  
Xu Liu
Keyword(s):  
Super Resolution ◽  
Sted Microscopy ◽  
Polarized Beam ◽  
Azimuthally Polarized Beam

scholarly journals In pursuit of photo-induced magnetic and chiral microscopy

2018 ◽  
Vol 5 ◽  
pp. 7 ◽  
Author(s):  
Jinwei Zeng ◽  
Mohammad Kamandi ◽  
Mahsa Darvishzadeh-Varcheie ◽  
Mohammad Albooyeh ◽  
Mehdi Veysi ◽  
...  
Keyword(s):  
Magnetic Force ◽  
Incident Beam ◽  
Optical Frequency ◽  
Chiral Molecules ◽  
Force Microscopy ◽  
Weakly Coupled ◽  
Polarized Beam ◽  
Azimuthally Polarized Beam ◽  
Future Work ◽  
Illuminating Beam

Light-matter interactions enable the perception of specimen properties such as its shape and dimensions by measuring the subtle differences carried by an illuminating beam after interacting with the sample. However, major obstacles arise when the relevant properties of the specimen are weakly coupled to the incident beam, for example when measuring optical magnetism and chirality. To address this challenge we propose the idea of detecting such weakly-coupled properties of matter through the photo-induced force, aiming at developing photo-induced magnetic or chiral force microscopy. Here we review our pursuit consisting of the following steps: (1) Development of a theoretical blueprint of a magnetic nanoprobe to detect a magnetic dipole oscillating at an optical frequency when illuminated by an azimuthally polarized beam via the photo-induced magnetic force; (2) Conducting an experimental study using an azimuthally polarized beam to probe the near fields and axial magnetism of a Si disk magnetic nanoprobe, based on photo-induced force microscopy; (3) Extending the concept of force microscopy to probe chirality at the nanoscale, enabling enantiomeric detection of chiral molecules. Finally, we discuss difficulties and how they could be overcome, as well as our plans for future work.

scholarly journals Inversion of the longitudinal component of spin angular momentum in the focus of a left-handed circularly polarized beam

2020 ◽  
Vol 44 (5) ◽  
pp. 699-706
Author(s):  
A.G. Nalimov ◽  
E.S. Kozlova
Keyword(s):  
Angular Momentum ◽  
Energy Flow ◽  
Longitudinal Component ◽  
Angular Momentum Vector ◽  
Spin Angular Momentum ◽  
Momentum Vector ◽  
Circularly Polarized ◽  
Left Hand ◽  
Left Handed ◽  
Polarized Beam

It has been shown theoretically and numerically that in the sharp focus of a circularly polarized optical vortex, the longitudinal component of the spin angular momentum vector is inverted. Moreover, if the input light to the optical system is left-hand circularly polarized, it has been shown to be right-hand polarized in the focus near the optical axis. Since this effect occurs near the focus where a backward energy flow takes place, such an inversion of the spin angular momentum can be used to detect the backward energy flow.

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