Focusing properties of hyperbolic-cosine-Gaussian beams combining a helical axicon

Optik ◽  
2013 ◽  
Vol 124 (18) ◽  
pp. 3422-3426 ◽  
Author(s):  
Xiangmei Dong ◽  
Tao Geng ◽  
Songlin Zhuang
Keyword(s):  
Gaussian Beams ◽  
Hyperbolic Cosine ◽  
Focusing Properties

scholarly journals Simultaneous Trapping of Two Types of Particles with Focused Elegant Third-Order Hermite–Gaussian Beams

Micromachines ◽  
2021 ◽  
Vol 12 (7) ◽  
pp. 769
Author(s):  
Jingjing Su ◽  
Nan Li ◽  
Jiapeng Mou ◽  
Yishi Liu ◽  
Xingfan Chen ◽  
...  
Keyword(s):  
Focal Plane ◽  
Rayleigh Scattering ◽  
Surrounding Medium ◽  
Beam Waist ◽  
Spherical Particles ◽  
Gaussian Beams ◽  
Third Order ◽  
Radiation Forces ◽  
Dielectric Spheres ◽  
Focusing Properties

The focusing properties of elegant third-order Hermite–Gaussian beams (TH3GBs) and the radiation forces exerted on dielectric spherical particles produced by such beams in the Rayleigh scattering regime have been theoretically studied. Numerical results indicate that the elegant TH3GBs can be used to simultaneously trap and manipulate nanosized dielectric spheres with refractive indexes lower than the surrounding medium at the focus and those with refractive indexes larger than the surrounding medium in the focal vicinity. Furthermore, by changing the radius of the beam waist, the transverse trapping range and stiffness at the focal plane can be changed.

Tight Focusing Properties of Radially Polarized Gaussian Beams with Pair of Vortices

2016 ◽  
Vol 33 (12) ◽  
pp. 124206
Author(s):  
C. A. P. Janet ◽  
K. B. Rajesh ◽  
M. Udhayakumar ◽  
Z. Jaroszewicz ◽  
T. V. S. Pillai
Keyword(s):  
Gaussian Beams ◽  
Tight Focusing ◽  
Radially Polarized ◽  
Focusing Properties

scholarly journals Simultaneous and independent capture of multiple Rayleigh dielectric nanospheres with sine-modulated Gaussian beams

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Jingjing Su ◽  
Nan Li ◽  
Xianfan Wang ◽  
Xingfan Chen ◽  
Huizhu Hu
Keyword(s):  
Gaussian Beams ◽  
Distribution Centers ◽  
Output Plane ◽  
Potential Wells ◽  
Single Beam ◽  
Dielectric Particles ◽  
Dielectric Spheres ◽  
Focus Plane ◽  
Propagation Properties ◽  
Focusing Properties

AbstractThis study investigates the propagation properties and radiation forces on Rayleigh dielectric particles produced by novel sine-modulated Gaussian beams (SMGBs) because of the unique focusing properties of four independent light intensity distribution centers and possessing many deep potential wells in the output plane of the target laser. The described beams can concurrently capture and manipulate multiple Rayleigh dielectric spheres with high refractive indices without disturbing each other at the focus plane. Spheres with a low refractive index can be guided or confined in the focus but cannot be stably trapped in this single beam trap. Simulation results demonstrate that the focused SMGBs can be used to trap particle in different planes by increasing the sine-modulate coefficient g. The conditions for effective and stable capture of high-index particles and the threshold of detectable radius are determined at the end of this study.

Propagation of Hyperbolic-Cosine Gaussian Beams in Strongly Nonlocal Media

2014 ◽  
Vol 34 (8) ◽  
pp. 0819002
Author(s):  
戴志平 Dai Zhiping ◽  
杨振军 Yang Zhenjun ◽  
张书敏 Zhang Shumin ◽  
庞兆广 Pang Zhaoguang ◽  
游开明 You Kaiming
Keyword(s):  
Gaussian Beams ◽  
Hyperbolic Cosine ◽  
Nonlocal Media
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