Negative refraction in the third photonic band of a two-dimensional elliptical rod photonic crystal in a centered rectangular lattice

2012 ◽  
Author(s):  
Jeff Lutkenhaus ◽  
Kris Ohlinger ◽  
Hualiang Zhang ◽  
Yuankun Lin
Keyword(s):  
Photonic Crystal ◽  
Negative Refraction ◽  
Rectangular Lattice ◽  
Two Dimensional ◽  
The Third ◽  
Photonic Band

scholarly journals Far-Field Focus and Dispersionless Anticrossing Bands in Two-Dimensional Photonic Crystals

2007 ◽  
Vol 2007 ◽  
pp. 1-8
Author(s):  
Xiaoshuang Chen ◽  
Renlong Zhou ◽  
Yong Zeng ◽  
Hongbo Chen ◽  
Wei Lu
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystals ◽  
Negative Refraction ◽  
Far Field ◽  
Two Dimensional ◽  
Surface Polaritons ◽  
Concave Lens ◽  
Bloch Mode ◽  
Two Dimensional Photonic Crystal ◽  
Photonic Band

We review the simulation work for the far-field focus and dispersionless anticrossing bands in two-dimensional (2D) photonic crystals. In a two-dimensional photonic-crystal-based concave lens, the far-field focus of a plane wave is given by the distance between the focusing point and the lens. Strong and good-quality far-field focusing of a transmitted wave, explicitly following the well-known wave-beam negative refraction law, can be achieved. The spatial frequency information of the Bloch mode in multiple Brillouin zones (BZs) is investigated in order to indicate the wave propagation in two different regions. When considering the photonic transmission in a 2D photonic crystal composed of a negative phase-velocity medium (NPVM), it is shown that the dispersionless anticrossing bands are generated by the couplings among the localized surface polaritons of the NPVM rods. The photonic band structures of the NPVM photonic crystals are characterized by a topographical continuous dispersion relationship accompanied by many anticrossing bands.

Kz component dependence of photonic band gap in two-dimensional photonic crystal

2011 ◽  
Author(s):  
Xuan Guo ◽  
Lihong Han ◽  
Guifang Yuan ◽  
Zhongyuan Yu ◽  
Yumin Liu ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Band Gap ◽  
Photonic Band Gap ◽  
Two Dimensional ◽  
Dimensional Photonic Crystal ◽  
Two Dimensional Photonic Crystal ◽  
Photonic Band

Negative refraction and subwavelength imaging in a hexagonal two-dimensional annular photonic crystal

2013 ◽  
Vol 113 (1) ◽  
pp. 013109 ◽  
Author(s):  
Feng Xia ◽  
Maojin Yun ◽  
Meiling Liu ◽  
Jian Liang ◽  
Weijin Kong ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Negative Refraction ◽  
Two Dimensional ◽  
Subwavelength Imaging

A Two-Dimensional Photonic Crystal Structure for Improving Efficiency of Pbs Quantum Dots Electroluminescence Devices

2012 ◽  
Vol 529 ◽  
pp. 14-18
Author(s):  
Pei Liu ◽  
Xiao Song Zhang ◽  
Chuan Zhen Xin ◽  
Meng Zhen Li ◽  
Lan Li
Keyword(s):  
Quantum Dots ◽  
Photonic Crystal ◽  
Light Propagation ◽  
Photonic Band Gap ◽  
Gap Effect ◽  
Diffraction Effect ◽  
Two Dimensional ◽  
Two Dimensional Photonic Crystal ◽  
Pbs Quantum Dots ◽  
Photonic Band

In this research, a triangular two-dimensional (2D) photonic crystal (PC) was hypothetically introduced into the active layer of a PbS quantum dots (QDs) electroluminescent (EL) device. The attributes of the photonic band gap effect and diffraction effect were considered and evaluated for device performance improvement. We designed and optimized the 2D-PC structure parameters to enhance the emission intensity at wavelength 1124 nm. The optimal structure parameter of PC is determined by normalized radius of r/a=0.49 and lattice constant of a=540 nm when the thickness of PC slab h is 74 nm. The 3D stimulation view of light propagation validates and supports the proposed strategy. The results provide a theoretical prediction for ideal PbS QDs-based EL device.

INFLUENCE OF A TWO-DIMENSIONAL PERIODIC DIELECTRIC BACKGROUND ON THE PHOTONIC BAND GAP IN COMPLEX HEXAGONAL LATTICE PHOTONIC CRYSTALS

2008 ◽  
Vol 22 (23) ◽  
pp. 4059-4067
Author(s):  
YAN ZHANG ◽  
JUN-JIE SHI
Keyword(s):  
Photonic Crystal ◽  
Band Gap ◽  
Significant Influence ◽  
Photonic Band Gap ◽  
Hexagonal Lattice ◽  
Dielectric Constants ◽  
Relative Width ◽  
Two Dimensional ◽  
Photonic Band ◽  
Complete Photonic Band Gap

A complex hexagonal lattice photonic crystal with a two-dimensional (2D) periodic dielectric background is proposed. The photonic band modulation effects due to the 2D periodic dielectric background are investigated. We find that the position and width of the complete photonic band gap (PBG) sensitively depend on the dielectric constants of the 2D periodic dielectric background. The radii of the two alternating air holes have significant influence on the relative width of the complete PBG.

Two-Dimensional Silicon Nitride Photonic Crystal Band Gap Characteristics

2013 ◽  
Vol 538 ◽  
pp. 201-204
Author(s):  
Shou Xiang Chen ◽  
Xiu Lun Yang ◽  
Xiang Feng Meng ◽  
Yu Rong Wang ◽  
Lin Hui Wang ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Silicon Nitride ◽  
Band Gap ◽  
Lattice Structure ◽  
Photonic Band Gap ◽  
Dielectric Materials ◽  
Filling Ratio ◽  
Square Lattice ◽  
Two Dimensional ◽  
Photonic Band

Plane-wave expansion method was employed to analyze the photonic band gap in two-dimensional silicon nitride photonic crystal. The effects of filling ratio and lattice structure type on the photonic band gap were studied. The results showed that two-dimensional dielectric cylinder type silicon nitride photonic crystal only has TE mode band gap, while, the air column type photonic crystal has complete band gap for TE and TM modes simultaneously. The distribution of band gap can be influenced by the filling ratio of dielectric materials and the lattice type. It is shown that the triangular lattice structure is much easier to form band gap than square lattice structure.

Sign in / Sign up

Export Citation Format

Share Document