Focusing of linearly-, and circularly polarized Gaussian background vortex beams by a high numerical aperture system afflicted with third-order astigmatism

2008 ◽  
Vol 281 (24) ◽  
pp. 5939-5948 ◽  
Author(s):  
Rakesh Kumar Singh ◽  
P. Senthilkumaran ◽  
Kehar Singh
Keyword(s):  
Numerical Aperture ◽  
Third Order ◽  
Circularly Polarized ◽  
High Numerical Aperture ◽  
Vortex Beams

scholarly journals Strongly Focused Circularly Polarized Optical Vortices Regulated by a Fractal Conical Lens

2019 ◽  
Vol 10 (1) ◽  
pp. 28
Author(s):  
Zhirong Liu ◽  
Kelin Huang ◽  
Anlian Yang ◽  
Xun Wang ◽  
Philip H. Jones
Keyword(s):  
Angular Momentum ◽  
Optical Tweezers ◽  
Numerical Aperture ◽  
Optical Element ◽  
Optical Vortex ◽  
Optical Vortices ◽  
Circularly Polarized ◽  
Strong Focusing ◽  
New Type ◽  
Vortex Beams

In this paper, a recently-proposed pure-phase optical element, the fractal conical lens (FCL), is introduced for the regulation of strongly-focused circularly-polarized optical vortices in a high numerical aperture (NA) optical system. Strong focusing characteristics of circularly polarized optical vortices through a high NA system in cases with and without a FCL are investigated comparatively. Moreover, the conversion between spin angular momentum (SAM) and orbital angular momentum (OAM) of the focused optical vortex in the focal vicinity is also analyzed. Results revealed that a FCL of different stage S could significantly regulate the distributions of tight focusing intensity and angular momentum of the circularly polarized optical vortex. The interesting results obtained here may be advantageous when using a FCL to shape vortex beams or utilizing circularly polarized vortex beams to exploit new-type optical tweezers.

Focus shaping of cylindrically polarized vortex beams by a high numerical-aperture lens

2009 ◽  
Vol 41 (3) ◽  
pp. 241-246 ◽  
Author(s):  
Lianzhou Rao ◽  
Jixiong Pu ◽  
Zhiyang Chen ◽  
Pu Yei
Keyword(s):  
Numerical Aperture ◽  
High Numerical Aperture ◽  
Focus Shaping ◽  
Vortex Beams

Focusing of Partially Coherent and Circularly Polarized Bessel-Gaussian Beams Through a High Numerical-Aperture Objective

2009 ◽  
Vol 29 (6) ◽  
pp. 1664-1670 ◽  
Author(s):  
陈宝算 Chen Baosuan ◽  
蒲继雄 Pu Jixiong ◽  
张志明 Zhang Zhiming ◽  
王喜庆 Wang Xiqing
Keyword(s):  
Numerical Aperture ◽  
Gaussian Beams ◽  
Circularly Polarized ◽  
High Numerical Aperture ◽  
Partially Coherent

Focusing properties of cylindrical vector vortex beams with high numerical aperture objective

Optik ◽  
2013 ◽  
Vol 124 (21) ◽  
pp. 4762-4765 ◽  
Author(s):  
Tingting Wang ◽  
Cuifang Kuang ◽  
Xiang Hao ◽  
Xu Liu
Keyword(s):  
Numerical Aperture ◽  
High Numerical Aperture ◽  
Vortex Beams ◽  
Focusing Properties

scholarly journals Focal Surface Detection of High Numerical Aperture Objective Lens Based on Differential Astigmatic Method

2021 ◽  
Vol 13 (4) ◽  
pp. 1-8
Author(s):  
Jia-Lin Du ◽  
Wei Yan ◽  
Li-Wei Liu ◽  
Fan-Xing Li ◽  
Fu-Ping Peng ◽  
...  
Keyword(s):  
Numerical Aperture ◽  
Objective Lens ◽  
High Numerical Aperture ◽  
Surface Detection ◽  
Focal Surface

High-numerical-aperture silica core fibers

2004 ◽  
Author(s):  
Bolesh J. Skutnik ◽  
Brian Foley ◽  
Kelly B. Moran
Keyword(s):  
Numerical Aperture ◽  
High Numerical Aperture ◽  
Silica Core
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