Vortex symmetric Airy beam

2019 ◽  
Author(s):  
Zhaoxiang Fang ◽  
rongde lu
Keyword(s):  
Airy Beam

Wideband mm-wave Non-diffracting Airy Beam Forming

2018 ◽  
Author(s):  
R. Kadlimatti ◽  
H. Gaddam ◽  
H. Larocque ◽  
E. Karimi ◽  
R.W. Boyd ◽  
...  
Keyword(s):  
Beam Forming ◽  
Airy Beam

scholarly journals Achromatic terahertz Airy beam generation with dielectric metasurfaces

Nanophotonics ◽  
2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Qingqing Cheng ◽  
Juncheng Wang ◽  
Ling Ma ◽  
Zhixiong Shen ◽  
Jing Zhang ◽  
...  
Keyword(s):  
Biomedical Imaging ◽  
Frequency Dispersion ◽  
Light Sheet ◽  
Photonic Devices ◽  
Self Healing ◽  
Beam Focusing ◽  
Light Sheet Microscopy ◽  
Airy Beam ◽  
Potential Applications ◽  
Airy Beams

AbstractAiry beams exhibit intriguing properties such as nonspreading, self-bending, and self-healing and have attracted considerable recent interest because of their many potential applications in photonics, such as to beam focusing, light-sheet microscopy, and biomedical imaging. However, previous approaches to generate Airy beams using photonic structures have suffered from severe chromatic problems arising from strong frequency dispersion of the scatterers. Here, we design and fabricate a metasurface composed of silicon posts for the frequency range 0.4–0.8 THz in transmission mode, and we experimentally demonstrate achromatic Airy beams exhibiting autofocusing properties. We further show numerically that a generated achromatic Airy-beam-based metalens exhibits self-healing properties that are immune to scattering by particles and that it also possesses a larger depth of focus than a traditional metalens. Our results pave the way to the realization of flat photonic devices for applications to noninvasive biomedical imaging and light-sheet microscopy, and we provide a numerical demonstration of a device protocol.

scholarly journals Application of Airy beam light sheet microscopy to examine early neurodevelopmental structures in 3D hiPSC-derived human cortical spheroids

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Dwaipayan Adhya ◽  
George Chennell ◽  
James A. Crowe ◽  
Eva P. Valencia-Alarcón ◽  
James Seyforth ◽  
...  
Keyword(s):  
High Resolution ◽  
Human Brain ◽  
Light Sheet ◽  
Autism Spectrum ◽  
Model Systems ◽  
Large Field ◽  
Autism Spectrum Conditions ◽  
Patient Specific ◽  
Airy Beam

Abstract Background The inability to observe relevant biological processes in vivo significantly restricts human neurodevelopmental research. Advances in appropriate in vitro model systems, including patient-specific human brain organoids and human cortical spheroids (hCSs), offer a pragmatic solution to this issue. In particular, hCSs are an accessible method for generating homogenous organoids of dorsal telencephalic fate, which recapitulate key aspects of human corticogenesis, including the formation of neural rosettes—in vitro correlates of the neural tube. These neurogenic niches give rise to neural progenitors that subsequently differentiate into neurons. Studies differentiating induced pluripotent stem cells (hiPSCs) in 2D have linked atypical formation of neural rosettes with neurodevelopmental disorders such as autism spectrum conditions. Thus far, however, conventional methods of tissue preparation in this field limit the ability to image these structures in three-dimensions within intact hCS or other 3D preparations. To overcome this limitation, we have sought to optimise a methodological approach to process hCSs to maximise the utility of a novel Airy-beam light sheet microscope (ALSM) to acquire high resolution volumetric images of internal structures within hCS representative of early developmental time points. Results Conventional approaches to imaging hCS by confocal microscopy were limited in their ability to image effectively into intact spheroids. Conversely, volumetric acquisition by ALSM offered superior imaging through intact, non-clarified, in vitro tissues, in both speed and resolution when compared to conventional confocal imaging systems. Furthermore, optimised immunohistochemistry and optical clearing of hCSs afforded improved imaging at depth. This permitted visualization of the morphology of the inner lumen of neural rosettes. Conclusion We present an optimized methodology that takes advantage of an ALSM system that can rapidly image intact 3D brain organoids at high resolution while retaining a large field of view. This imaging modality can be applied to both non-cleared and cleared in vitro human brain spheroids derived from hiPSCs for precise examination of their internal 3D structures. This process represents a rapid, highly efficient method to examine and quantify in 3D the formation of key structures required for the coordination of neurodevelopmental processes in both health and disease states. We posit that this approach would facilitate investigation of human neurodevelopmental processes in vitro.

scholarly journals Dynamic Control of Collapse in a Vortex Airy Beam

2013 ◽  
Vol 3 (1) ◽  
Author(s):  
Rui-Pin Chen ◽  
Khian-Hooi Chew ◽  
Sailing He
Keyword(s):  
Dynamic Control ◽  
Airy Beam

Evolution of an Airy beam in a saturated medium

Laser Physics ◽  
2014 ◽  
Vol 24 (11) ◽  
pp. 115402 ◽  
Author(s):  
Rui-Pin Chen ◽  
Khian-Hooi Chew ◽  
Ting-Yu Zhao ◽  
Pei-Gang Li ◽  
Chao-Rong Li
Keyword(s):  
Airy Beam ◽  
Saturated Medium

scholarly journals Electro-optical coupling of a circular Airy beam in a uniaxial crystal

2017 ◽  
Vol 25 (13) ◽  
pp. 14654 ◽  
Author(s):  
Guoliang Zheng ◽  
Shixiang Xu ◽  
Qingyang Wu ◽  
Qiong Wang ◽  
Zhengbiao Ouyang
Keyword(s):  
Uniaxial Crystal ◽  
Optical Coupling ◽  
Airy Beam

scholarly journals Anomalous Propagation Characteristics of Airy Beam in Nonlinear Kerr Media

Crystals ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 879
Author(s):  
Li Shao ◽  
Yun-Long Wu ◽  
Qing Ye
Keyword(s):  
Bound States ◽  
Quasi Equilibrium ◽  
Spatial Solitons ◽  
Propagation Characteristics ◽  
Transform Method ◽  
Nonlinear Media ◽  
Kerr Media ◽  
Airy Beam ◽  
Normal Breathing ◽  
Anomalous Propagation

The propagation characteristics of a single Airy beam in nonlinear Kerr media were numerically investigated by utilizing the split-step Fourier transform method. We show that in addition to normal breathing solitons, the anomalous bound states of Airy spatial solitons can also be formed, which are similar to the states formed in the interaction between two Airy beams in nonlinear media. This quasi-equilibrium state is formed by the interaction of the main soliton beam and side lobes of Airy beam due to their different propagation trajectories in the nonlinear media. Moreover, it has been shown the Airy spatial solitons in tree structure can be formed by adjusting the initial parameters in the interaction between the Airy beam and Kerr media.

Optical manipulation of chiral nanoparticles in vector Airy beam

2018 ◽  
Vol 20 (12) ◽  
pp. 125402
Author(s):  
Wanli Lu ◽  
Xu Sun ◽  
Huajin Chen ◽  
Shiyang Liu ◽  
Zhifang Lin
Keyword(s):  
Optical Manipulation ◽  
Airy Beam

Evolution of an Airy beam obstructed by a transparent particle

2013 ◽  
Vol 286 ◽  
pp. 135-139 ◽  
Author(s):  
Xiuxiang Chu ◽  
Xin Li ◽  
Liang Chen
Keyword(s):  
Airy Beam
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