Analysis of confocal readout signal in multilayer optical storage with vector diffraction theory

2009 ◽  
Author(s):  
Xuemin Gao ◽  
Jianhuan Zhang ◽  
Wenying Yang ◽  
Yingchuan Hong ◽  
Guannan Jiang
Keyword(s):  
Diffraction Theory ◽  
Optical Storage ◽  
Vector Diffraction Theory ◽  
Readout Signal ◽  
Vector Diffraction

Fabrication of Subwavelength Metal Grating and Analysis with Vector Diffraction Theory

2013 ◽  
Vol 34 (7) ◽  
pp. 935-939
Author(s):  
郑改革 ZHENG Gai-ge ◽  
詹煜 ZHAN Yu ◽  
曹焜 CAO Kun ◽  
徐林华 XU Lin-hua
Keyword(s):  
Diffraction Theory ◽  
Vector Diffraction Theory ◽  
Metal Grating ◽  
Vector Diffraction

Simulation of Flat-Top Focus Shaping Using Effect of Polarization in High Numerical Apertures Optical Systems

2012 ◽  
Vol 571 ◽  
pp. 175-179
Author(s):  
Ke Feng ◽  
Jin Song Li ◽  
Ling Guo
Keyword(s):  
Focal Spot ◽  
Optical Element ◽  
Diffraction Theory ◽  
Optical Systems ◽  
Polarization Angle ◽  
Vector Diffraction Theory ◽  
Polarization Component ◽  
Focus Shaping ◽  
Focal Pattern ◽  
Vector Diffraction

Flat-top focus shaping using effect of polarization is investigated theoretically by vector diffraction theory. We demonstrate how to make a properly selected polarization component to achieve a flat-top focus in high numerical apertures optical systems, hence achieving a potential goal of beam shaping. The results show that the values of the polarization angle corresponding to different numerical apertures (NA)values for a flat-top focus and the polarization angle increases on increasing NA for achieving a flat-top focal spot, but the flat-top focal pattern will become -sensitive when NA is larger than 1. One will have to add a diffractive optical element to achieve a flat-top focal spot in NA larger than 1 system.

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