Generation of sub-wavelength longitudinal magnetic probe using high numerical aperture lens axicon and binary phase plate

2012 ◽  
Vol 14 (5) ◽  
pp. 055704 ◽  
Author(s):  
V Ravi ◽  
P Suresh ◽  
K B Rajesh ◽  
Z Jaroszewicz ◽  
P M Anbarasan ◽  
...  
Keyword(s):  
Numerical Aperture ◽  
Magnetic Probe ◽  
Phase Plate ◽  
High Numerical Aperture ◽  
Binary Phase ◽  
Sub Wavelength

scholarly journals Diffraction theory of high numerical aperture subwavelength circular binary phase Fresnel zone plate

2014 ◽  
Vol 22 (22) ◽  
pp. 27425 ◽  
Author(s):  
Yaoju Zhang ◽  
Hongchang An ◽  
Dong Zhang ◽  
Guihua Cui ◽  
Xiukai Ruan
Keyword(s):  
Fresnel Zone ◽  
Numerical Aperture ◽  
Diffraction Theory ◽  
Zone Plate ◽  
Fresnel Zone Plate ◽  
High Numerical Aperture ◽  
Binary Phase

scholarly journals Sub-wavelength tight-focusing of terahertz waves by polarization-independent high-numerical-aperture dielectric metalens

2018 ◽  
Vol 26 (23) ◽  
pp. 29817 ◽  
Author(s):  
Hao Chen ◽  
Zhixiang Wu ◽  
Zeyu Li ◽  
Zhenfei Luo ◽  
Xue Jiang ◽  
...  
Keyword(s):  
Numerical Aperture ◽  
Terahertz Waves ◽  
High Numerical Aperture ◽  
Tight Focusing ◽  
Polarization Independent ◽  
Sub Wavelength

Generation of a strong uniform transversely polarized nondiffracting beam using a high-numerical-aperture lens axicon with a binary phase mask

2013 ◽  
Vol 52 (4) ◽  
pp. 849 ◽  
Author(s):  
P. Suresh ◽  
C. Mariyal ◽  
K. B. Rajesh ◽  
T. V. S. Pillai ◽  
Z. Jaroszewicz
Keyword(s):  
Numerical Aperture ◽  
Phase Mask ◽  
High Numerical Aperture ◽  
Binary Phase ◽  
Nondiffracting Beam

Axial multifocal binary-phase zone plate for high numerical aperture focusing

2016 ◽  
Vol 55 (12) ◽  
pp. 1 ◽  
Author(s):  
Zhenxian Huang ◽  
Zhiqiang Hao ◽  
Linwei Zhu
Keyword(s):  
Numerical Aperture ◽  
Zone Plate ◽  
Phase Zone ◽  
High Numerical Aperture ◽  
Binary Phase

Study on High-Numerical-Aperture-Focused Characteristics of Vector Beam Produced by π Phase Plate

2014 ◽  
Vol 34 (12) ◽  
pp. 1226001
Author(s):  
陈国钧 Chen Guojun ◽  
周巧巧 Zhou Qiaoqiao ◽  
纪宪明 Ji Xianming ◽  
印建平 Yin Jianping
Keyword(s):  
Numerical Aperture ◽  
Phase Plate ◽  
High Numerical Aperture ◽  
Vector Beam

scholarly journals Generation of optical needle and dark channel by tight focusing of radially polarized circular partially coherent beams

2020 ◽  
Vol 50 (2) ◽  
Author(s):  
Huichuan Lin ◽  
Yan Li ◽  
Xiaoming Zhou ◽  
Juanjuan Wang ◽  
Ziyang Chen ◽  
...  
Keyword(s):  
Numerical Aperture ◽  
Full Width ◽  
Half Maximum ◽  
High Numerical Aperture ◽  
Partially Coherent ◽  
Dark Channel ◽  
Tight Focusing ◽  
Coherent Beams ◽  
Radially Polarized ◽  
Sub Wavelength

We theoretically investigate the tight focusing of radially polarized circular partially coherent (RPCPC) beams through a high numerical aperture objective. The sub-wavelength super-long optical needle and dark channel can be obtained near the focus, by engineering the source coherent length of the incident RPCPC beams. The length of the optical needle and the dark channel can be adjusted, and the obtained maximal lengths of the optical needle and the dark channel are both 22λ. The full width at half maximum of the optical needle and the dark channel are 0.6λ and 0.48λ, respectively.

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
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