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Article
Optics
Rafael A. B. Suarez et al.
Summary: In this work, micro-particles are trapped using holographic optical tweezers with higher-order frozen waves. Frozen waves are diffraction-resistant optical beams obtained by superposing co-propagating Bessel beams, which enables efficient modeling of their shape. A holographic optical tweezers system for generating frozen waves was developed, allowing for stable trapping and guiding of micro-particles in the transverse plane. Experimental results demonstrate excellent stability in optical trapping using higher-order frozen waves, indicating their promising potential in various applications such as biological research, atomic physics, and optical manipulations using structured light with orbital angular momentum.
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
(2023)
Article
Optics
Allarakha Shikder et al.
Summary: Lately, the generation of various optical vortex lattices has become a topic of interest due to its wide-ranging applications. Different methods have been used, including interferometric, diffractive, and pinhole phase plate methods, with the use of coherent light sources. However, the use of incoherent or partially coherent light beams is gaining popularity due to cost effectiveness and ease of implementation. In this study, the researchers demonstrate the generation of optical vortex lattices using a phase concatenation approach and a light-emitting diode as the light source, providing a non-interferometric and flexible technique for selecting the parameters of the optical vortices and their arrays.
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION
(2023)
Article
Physics, Multidisciplinary
Jingyi Shi et al.
Summary: This paper proposes a partially coherent azimuthally polarized circular vortex Swallowtail Gaussian beam (PCAPCVSGB), which can design a light field with a specific intensity distribution using its rich regulatory parameters. This beam exhibits abnormal self-focusing ability and forms an easily adjustable optical potential well at the focal plane, providing an effective tool for optical manipulation.
NEW JOURNAL OF PHYSICS
(2023)
Article
Optics
Shuaiyang Wei et al.
Summary: This study investigates the propagation and evolution of self-focusing circular Pearcey-Airy Gaussian vortex beams (CPAGVB) through high numerical aperture objective lenses. It examines the unique light field distribution of CPAGVB compared to other vortex beams and explores the variety of light field structures that can be generated by adjusting optical parameters. The study also examines the particle trapping performance, lateral power flow density, spin density vector, and total angular momentum distribution of CPAGVB, as well as the polarization distribution at the focal plane and its impact on phase singularities. This research advances our understanding of the distinctive properties of CPAGVB and its potential applications in micro-optical systems and particle manipulation.
Article
Optics
Mansi Baliyan et al.
Summary: This paper introduces an efficient method for generating scalar and vector modes of Bessel-Gaussian (BG) beams using a spatial light modulator (SLM) encoded with a computer-generated phase-only mask. The combination of a phase-only hologram corresponding to the transmission function of an axicon with a spatial phase plate (SPP) is used to convert a Gaussian field into a phase singular beam with an azimuthally varying spiral wavefront structure, achieving non-diffracting BG beams. A compact experimental setup is proposed for generating BG fields with homogeneous and spatially varying polarization distributions across the transverse plane. Scalar BG beams are generated by modulating the combined phase patterns of the axicon and SPP using the SLM. Vector BG beams are generated through dual-passes from the SLM in two special cases: azimuthally and radially polarized inhomogeneous distributions. A non-interferometric technique using a single SLM divided into two halves is utilized to encode scalar BG beams with orthogonal phase structures into orthogonal components of incoming light for vector BG beam generation.
Article
Optics
Zhenwu Mo et al.
Summary: In this study, we introduce a new type of multiple and off-axis optical bottles based on the chirped circular Pearcey Gaussian vortex beam. These optical bottles can generate a perfect bottle shape through coherent superposition, and the number and position of the optical bottles can be precisely controlled. Experimental results agree well with numerical simulations, and stable trapping of microbead particles is observed.
Article
Optics
Xiang Zang et al.
Summary: In this paper, a novel kind of abrupt autofocusing beams, namely the generalized circular Airy derivative beams (CADBs) are introduced as an extension of circular Airy beam (CAB). The CADBs exhibit stronger autofocusing ability compared to the CAB and have smaller focal spot size.
Article
Optics
Junjie Jiang et al.
Summary: This paper extends a circular Pearcey beam (CPB) to an elliptical Pearcey beam (EPB) both theoretically and experimentally, providing a more diverse and tunable option with double focusing property. By controlling the elliptical parameter, the EPB enables flexible adjustment of its normalized focusing intensity, beam shape, and focusing position. The experimental results match well with the theoretical ones, and the optical bottle effect is verified by embedding a vortex into the EPB, showcasing potential applications in multi microparticle manipulation with optical tweezers.
OPTICS COMMUNICATIONS
(2022)
Article
Optics
Xiang Zang et al.
Summary: This study investigates the effect of introducing first- and second-order chirped factors on the abrupt autofocusing ability of circular Airyprime beam (CAPB). The results show that optimizing the chirped factors can enhance the abrupt autofocusing ability of CAPB.
Article
Materials Science, Multidisciplinary
Jianwen Wu et al.
Summary: The study found that multiple consecutive optical bottles can be generated by controlling elliptical structure parameters and chirp factors. The focusing intensity, focal length, and transverse intensity distribution of CEPGV beams during propagation can be controlled.
RESULTS IN PHYSICS
(2022)
Article
Optics
[Anonymous]
Summary: This paper investigates the free-space propagation dynamics of circular Airyprime vortex beam (CAPVB) embedded with an optical vortex (OV), and examines the effects of topological charge and singularity position on its autofocusing ability and focus position. Experimental results demonstrate the theoretical findings and show that CAPVB has the ability to produce various special focus intensity patterns and carry orbital angular momentum.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Optics
Xin Ji et al.
Summary: This study experimentally and numerically demonstrates the propagation characteristics of elliptical Airy vortex beams (EAVB), and analyzes the relationship between elliptical parameter and detection probability of orbital angular momentum (OAM). The results show that elliptical parameter significantly affects the OAM spectral distribution and the propagation characteristics of EAVB.
OPTICS COMMUNICATIONS
(2022)
Review
Optics
Yuanjie Yang et al.
Summary: Optical trapping is a technique that manipulates micro-objects using the interaction between light and matter, with optical tweezers being a powerful tool widely used in various fields. Recent advances in using structured light beams in optical trapping have opened up new possibilities for manipulation research in different environments.
ADVANCED PHOTONICS
(2021)
Article
Optics
Bingsong Cao et al.
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION
(2020)
Article
Physics, Multidisciplinary
You Wu et al.
NEW JOURNAL OF PHYSICS
(2020)
Article
Optics
Indira S. Yepes et al.
OPTICS COMMUNICATIONS
(2019)
Article
Optics
Liping Zhang et al.
Article
Optics
Wenke Xie et al.
OPTICS COMMUNICATIONS
(2018)
Article
Optics
Yong Zha et al.
Article
Optics
Tuanjie Du et al.
OPTICS COMMUNICATIONS
(2014)
Article
Optics
A. P. Porfirev et al.
Article
Optics
Ioannis Chremmos et al.
Article
Optics
Olga Jovanovic
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2009)
Article
Optics
BPS Ahluwalia et al.
OPTICS COMMUNICATIONS
(2004)
Article
Optics
AY Bekshaev et al.
OPTICS COMMUNICATIONS
(2004)
Article
Optics
J Arlt et al.