Three-dimensional trapping with a focused Bessel beam

2015 ◽  
Author(s):  
Yareni A. Ayala ◽  
Alejandro V. Arzola ◽  
Karen V. Sepúlveda
Keyword(s):  
Bessel Beam ◽  
Three Dimensional

scholarly journals Printing special surface components for THz 2D and 3D imaging

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Bo Yan ◽  
Zhigang Wang ◽  
Xing Zhao ◽  
Lie Lin ◽  
Xiaolei Wang ◽  
...  
Keyword(s):  
Imaging System ◽  
Incident Light ◽  
Optical Design ◽  
Bessel Beam ◽  
Three Dimensional ◽  
Focal Depth ◽  
Traditional System ◽  
Special Surface ◽  
3D Printed ◽  
Aspherical Mirrors

AbstractThe paper reports an off-axis large focal depth THz imaging system which consists of three 3D printed special surface components (two aspherical mirrors and an axicon). Firstly, the optical design software is used to design and optimize the aspherical parabolic mirror. Secondly, the optimized mirror is prepared by a 3D printing and metal cladding method. Thirdly, a THz axicon is designed for generation of quasi-Bessel Beam and a new geometric theoretical model of oblique incident light for axicon is established. Finally, the imaging system based on the special surface components is constructed. Its maximum diffraction-free distance is about 60 mm, which is 6 times higher than the traditional system. To verify the effectiveness, THz two-dimensional imaging experiments and three-dimensional computed tomography experiment are carried out. The results are consistent with the design and calculations.

scholarly journals Rapid three-dimensional isotropic imaging of living cells using Bessel beam plane illumination

2011 ◽  
Vol 8 (5) ◽  
pp. 417-423 ◽  
Author(s):  
Thomas A Planchon ◽  
Liang Gao ◽  
Daniel E Milkie ◽  
Michael W Davidson ◽  
James A Galbraith ◽  
...  
Keyword(s):  
Bessel Beam ◽  
Three Dimensional ◽  
Living Cells

Creating a three-dimensional surface with antireflective properties by using femtosecond-laser Bessel-beam-assisted thermal oxidation

2020 ◽  
Vol 45 (11) ◽  
pp. 2989
Author(s):  
Xiaowei Li ◽  
Zhijie Xu ◽  
Lan Jiang ◽  
Yaoming Shi ◽  
Andong Wang ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Thermal Oxidation ◽  
Bessel Beam ◽  
Three Dimensional ◽  
Dimensional Surface ◽  
Antireflective Properties

Multiphoton Polymerization Using Femtosecond Bessel Beam for Layerless Three-Dimensional Printing

2017 ◽  
Vol 6 (1) ◽  
Author(s):  
Xiaoming Yu ◽  
Meng Zhang ◽  
Shuting Lei
Keyword(s):  
3D Printing ◽  
Bessel Beam ◽  
Three Dimensional ◽  
Average Diameter ◽  
Laser Exposure ◽  
Layer By Layer ◽  
Light Modulator ◽  
Aspect Ratios ◽  
Printing Method ◽  
Printing Speed

Photopolymerization enables the printing of three-dimensional (3D) objects through successively solidifying liquid photopolymer on two-dimensional (2D) planes. However, such layer-by-layer process significantly limits printing speed, because a large number of layers need to be processed in sequence. In this paper, we propose a novel 3D printing method based on multiphoton polymerization using femtosecond Bessel beam. This method eliminates the need for layer-by-layer processing, and therefore dramatically increases printing speed for structures with high aspect ratios, such as wires and tubes. By using unmodulated Bessel beam, a stationary laser exposure creates a wire with average diameter of 100 μm and length exceeding 10 mm, resulting in an aspect ratio > 100:1. Scanning this beam on the lateral plane fabricates a hollow tube within a few seconds, more than ten times faster than using the layer-by-layer method. Next, we modulate the Bessel beam with a spatial light modulator (SLM) and generate multiple beam segments along the laser propagation direction. Experimentally observed beam pattern agrees with optics diffraction calculation. This 3D printing method can be further explored for fabricating complex structures and has the potential to dramatically increase 3D printing speed while maintaining high resolution.

10 nm three-dimensional localization using Bessel beam microscopy

2020 ◽  
Vol 31 (4) ◽  
pp. 045701
Author(s):  
Chumki Chakraborty ◽  
Md Anisul Islam ◽  
Craig Snoeyink
Keyword(s):  
Bessel Beam ◽  
Three Dimensional

Sub-Diffraction Limit Three Dimensional Particle Tracking Velocimetry

2013 ◽  
Author(s):  
Craig A. Snoeyink ◽  
Gordon Christopher ◽  
Sourav Barman ◽  
Steve Wereley
Keyword(s):  
Imaging System ◽  
Optical Measurement ◽  
Single Point ◽  
Bessel Beam ◽  
Three Dimensional ◽  
Diffraction Limit ◽  
Point Of View ◽  
Three Dimensions ◽  
Three Dimension ◽  
Single View

Here we present an optical measurement technique and image analysis process capable of tracking particles in three dimensions with a single point of view. In addition to single view 3D-PTV, the optical system is capable of tracking individual particles even at particle-particle spacings that are closer then the diffraction limit of the base imaging system. The measurement system, termed Bessel Beam Microscopy (BBM), functions as an attachment for a microscope that fits between the microscope base and camera. The addition of the BBM attachment transforms the point spread function (PSF) of the microscope allowing two unique functions: single image superresolution imaging, and the extraction of three dimension location information of particles without calibration. The result is a fluid characterization tool with unique capabilities for velocimetry and characterization of the dynamics of dense fluid-particle suspensions.

scholarly journals Optogenetic Manipulation of Cell Migration with High Spatiotemporal Resolution Using Lattice Lightsheet Microscopy

2022 ◽  
Author(s):  
Wei-Chun Tang ◽  
Yen-Ting Liu ◽  
Cheng-Han Yeh ◽  
Yi-Ling Lin ◽  
Yu-Chun Lin ◽  
...  
Keyword(s):  
Cell Migration ◽  
Bessel Beam ◽  
Three Dimensional ◽  
Light Modulator ◽  
Spatiotemporal Resolution ◽  
Membrane Ruffling ◽  
Volume Imaging ◽  
A Cell ◽  
Optical Configuration ◽  
Subcellular Resolution

Lattice lightsheet microscopy (LLSM) is modified with the aim of manipulating cellular behavior with subcellular resolution through three-dimensional (3D) optogenetic activation. In this study, we report a straightforward implementation of the activation source in LLSM in which the stimulating light can be generated by changing the spatial light modulator (SLM) patterns and the annual masks. As a result, a Bessel beam as a stimulation source is integrated into the LLSM without changing the optical configuration, achieving high spatiotemporal activation. We show that the energy power required for optogenetic reactions is lower than 1 nW (24 mW/cm2) and membrane ruffling can be activated at different locations within a cell with subcellular resolution. We also demonstrate guided cell migration using optogenetic stimulation for up to 6 h with 463 volume imaging without noticeable damage to cells.

Reconfigurable three-dimensional optical route formed by fiber-optic pseudo-Bessel beam arrays

2011 ◽  
Author(s):  
Jongki Kim ◽  
Sungrae Lee ◽  
Yoonseob Jeong ◽  
Jeon-Soo Shin ◽  
Kyunghwan Oh
Keyword(s):  
Fiber Optic ◽  
Bessel Beam ◽  
Three Dimensional
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