Focusing effect of a graded index photonic crystal lens

2011 ◽  
Vol 284 (12) ◽  
pp. 3140-3143 ◽  
Author(s):  
C. Tan ◽  
Tapio Niemi ◽  
Changsi Peng ◽  
Markus Pessa
Keyword(s):  
Photonic Crystal ◽  
Focusing Effect ◽  
Graded Index ◽  
Photonic Crystal Lens

Adaptive Graded Index Photonic Crystal Lens Design via Nematic Liquid Crystals

2016 ◽  
Vol 52 (10) ◽  
pp. 1-7 ◽  
Author(s):  
Ibrahim Halil Giden ◽  
Neslihan Eti ◽  
Behrooz Rezaei ◽  
Hamza Kurt
Keyword(s):  
Liquid Crystals ◽  
Photonic Crystal ◽  
Nematic Liquid Crystals ◽  
Lens Design ◽  
Graded Index ◽  
Photonic Crystal Lens

scholarly journals Super-resolution imaging of negative-refractive graded-index photonic crystal flat lens

2021 ◽  
Author(s):  
Binming Liang ◽  
Xiao Huang ◽  
Jihong Zheng
Keyword(s):  
Photonic Crystal ◽  
Imaging System ◽  
Super Resolution ◽  
Point Sources ◽  
Image Resolution ◽  
Multiple Point ◽  
Single Image ◽  
Graded Index ◽  
Resolution Imaging ◽  
Flat Lens

Abstract Photonic crystal (PC) not only breaks through the diffraction limit of traditional lenses but also can realize super-resolution imaging. Improving the resolution is the key task of PC imaging. The main work of this paper is to use a graded-index Photonic crystal (GPC) flat lens to improve the image resolution. An air-hole type two-dimensional (2D) GPC structure based on silicon medium is proposed in this paper. Numerical simulations through RSoft reveal that when the medium in the imaging area is air, the full width at half maximum (FWHM) value of a single image reaches 0.362λ. According to the Rayleigh criterion, the images of two point sources 0.57λ apart can also be distinguished. In the imaging system composed of cedar oil and GPC flat lens, the FWHM value of a single image reaches 0.34λ. In addition, the images of multiple point sources 0.49λ apart can still be distinguished.

scholarly journals Focus modulation of cylindrical vector beams by using 1D photonic crystal lens with negative refraction effect

2015 ◽  
Vol 23 (21) ◽  
pp. 26978 ◽  
Author(s):  
Ji Xu ◽  
Yi Zhong ◽  
Shengming Wang ◽  
Yunqing Lu ◽  
Hongdan Wan ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Negative Refraction ◽  
Refraction Effect ◽  
Vector Beams ◽  
1D Photonic Crystal ◽  
Photonic Crystal Lens
Sign in / Sign up

Export Citation Format

Share Document