Tight focusing of J0-correlated Gaussian Schell-model beam through high numerical aperture

2012 ◽  
Vol 285 (16) ◽  
pp. 3403-3411 ◽  
Author(s):  
Jia Li ◽  
Xiumin Gao ◽  
Yanru Chen
Keyword(s):  
Numerical Aperture ◽  
High Numerical Aperture ◽  
Tight Focusing

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

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

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

Aberration-free optical refocusing in high numerical aperture microscopy

2007 ◽  
Vol 32 (14) ◽  
pp. 2007 ◽  
Author(s):  
Edward J. Botcherby ◽  
Rimas Juskaitis ◽  
Martin J. Booth ◽  
Tony Wilson
Keyword(s):  
Numerical Aperture ◽  
High Numerical Aperture
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