Focal Pattern of Hyperbolic-Cosine-Gaussian Beam with Optical Vortex

2009 ◽  
Author(s):  
Xiumin Gao ◽  
Qiufang Zhan ◽  
Jinsong Li ◽  
Jian Wang ◽  
Songlin Zhuang
Keyword(s):  
Gaussian Beam ◽  
Optical Vortex ◽  
Hyperbolic Cosine ◽  
Focal Pattern

Focal patterns of higher order hyperbolic-cosine-Gaussian beam with one optical vortex

2011 ◽  
Vol 42 (6-7) ◽  
pp. 367-380 ◽  
Author(s):  
Xiumin Gao ◽  
Qi Wang ◽  
Qiufang Zhan ◽  
Maojin Yun ◽  
Hanming Guo ◽  
...  
Keyword(s):  
Gaussian Beam ◽  
Optical Vortex ◽  
Higher Order ◽  
Hyperbolic Cosine

Focused Gaussian beam with induced optical vortex movement

2011 ◽  
Author(s):  
Ireneusz Augustyniak ◽  
Agnieszka Popiolek-Masajada ◽  
Jan Masajada
Keyword(s):  
Gaussian Beam ◽  
Optical Vortex ◽  
Vortex Movement ◽  
Focused Gaussian Beam

Optical vortex scanning inside the Gaussian beam

2011 ◽  
Vol 13 (3) ◽  
pp. 035714 ◽  
Author(s):  
J Masajada ◽  
M Leniec ◽  
I Augustyniak
Keyword(s):  
Gaussian Beam ◽  
Optical Vortex

scholarly journals Effect of hydrodynamic inter-particle interaction on the orbital motion of dielectric nanoparticles driven by an optical vortex

Nanoscale ◽  
2020 ◽  
Vol 12 (12) ◽  
pp. 6673-6690 ◽  
Author(s):  
Tetsuro Tsuji ◽  
Ryoji Nakatsuka ◽  
Kichitaro Nakajima ◽  
Kentaro Doi ◽  
Satoyuki Kawano
Keyword(s):  
Gaussian Beam ◽  
Orbital Motion ◽  
Particle Interaction ◽  
Optical Vortex

We experimentally and theoretically characterize dielectric nano- and microparticle orbital motion induced by an optical vortex of the Laguerre–Gaussian beam and investigate the role of hydrodynamic inter-particle interaction.

Tunable gradient force of hyperbolic-cosine–Gaussian beam with vortices

2010 ◽  
Vol 48 (7-8) ◽  
pp. 766-773 ◽  
Author(s):  
Xiumin Gao ◽  
Zhuo Li ◽  
Jian Wang ◽  
Lingling Sun ◽  
Songlin Zhuang
Keyword(s):  
Gaussian Beam ◽  
Gradient Force ◽  
Hyperbolic Cosine

scholarly journals Measurement of the orbital angular momentum of an astigmatic Hermite–Gaussian beam

2019 ◽  
Vol 43 (3) ◽  
pp. 356-367
Author(s):  
V.V. Kotlyar ◽  
A.A. Kovalev ◽  
A.P. Porfirev
Keyword(s):  
Angular Momentum ◽  
Gaussian Beam ◽  
Orbital Angular Momentum ◽  
Topological Charge ◽  
Optical Axis ◽  
Optical Vortex ◽  
Cylindrical Lens ◽  
Optical Vortices ◽  
Special Choice ◽  
Different Types

Here we study three different types of astigmatic Gaussian beams, whose complex amplitude in the Fresnel diffraction zone is described by the complex argument Hermite polynomial of the order (n, 0). The first type is a circularly symmetric Gaussian optical vortex with and a topological charge n after passing through a cylindrical lens. On propagation, the optical vortex "splits" into n first-order optical vortices. Its orbital angular momentum per photon is equal to n. The second type is an elliptical Gaussian optical vortex with a topological charge n after passing through a cylindrical lens. With a special choice of the ellipticity degree (1: 3), such a beam retains its structure upon propagation and the degenerate intensity null on the optical axis does not “split” into n optical vortices. Such a beam has fractional orbital angular momentum not equal to n. The third type is the astigmatic Hermite-Gaussian beam (HG) of order (n, 0), which is generated when a HG beam passes through a cylindrical lens. The cylindrical lens brings the orbital angular momentum into the original HG beam. The orbital angular momentum of such a beam is the sum of the vortex and astigmatic components, and can reach large values (tens and hundreds of thousands per photon). Under certain conditions, the zero intensity lines of the HG beam "merge" into an n-fold degenerate intensity null on the optical axis, and the orbital angular momentum of such a beam is equal to n. Using intensity distributions of the astigmatic HG beam in foci of two cylindrical lenses, we calculate the normalized orbital angular momentum which differs only by 7 % from its theoretical orbital angular momentum value (experimental orbital angular momentum is –13,62, theoretical OAM is –14.76).

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