Observation of negative refraction and focusing in two-dimensional photonic crystals
Date
2006Source Title
Reviewed Japanese Journal of Applied Physics
Print ISSN
0021-4922
Publisher
Institute of Physics Publishing Ltd.
Volume
45
Issue
8 A
Pages
6064 - 6070
Language
English
Type
ArticleItem Usage Stats
259
views
views
209
downloads
downloads
Abstract
We experimentally and theoretically demonstrate the negative refraction and focusing of electromagnetic (EM) waves by twodimensional photonic crystal slabs at microwave frequencies. The negative refraction is observed both for transverse magnetic (TM) and transverse electric (TE) polarized incident EM waves. Gaussian beam shifting method is used to verify the negative refractive index. The Subwavelength imaging and flat lens behavior of photonic crystals are succesfully demonstrated. We have been able to overcome the diffraction limit and focus the EM waves to a spot size of 0.21λ. Metallodielectric photonic crystals are employed to increase the range of angle of incidence that results in negative refraction. Experimental results and theoretical calculations are in good agreement throughout the work. © 2006 The Japan Society of Applied Physics.
Keywords
Band diagramEqual frequency contours
Flat lens
Left-handed materials
Metamaterial
Negative refraction
Photonic band gap
Photonic crystals
Subwavelength imaging
Electromagnetic waves
Imaging techniques
Photons
Refraction
Refractive index
Band diagram
Equal frequency contours
Flat lens
Left handed materials
Metamaterials
Negative refraction
Photonic band gap
Photonic crystals
Subwavelength imaging
Crystal structure
Permalink
http://hdl.handle.net/11693/23742Published Version (Please cite this version)
http://dx.doi.org/10.1143/JJAP.45.6064Collections
Related items
Showing items related by title, author, creator and subject.
-
Negative refraction and subwavelength focusing using photonic crystals
Özbay, Ekmel; Aydın, Koray; Alıcı, Kamil Boratay; Güven, Kaan (SPIE, 2005-01)We review certain novel optical properties of two-dimensional dielectric photonic crystals (PCs) which exhibit negative refraction behavior. We investigate two mechanisms which utilize the band structure of the PC and lead ... -
All-chalcogenide variable infrared filter
Kondakcı, H. Esat; Köyle, Özlem; Yaman, Mecit; Dana, Aykutlu; Bayındır, Mehmet (SPIE, 2009)We present the design, fabrication, characterization of spatially variable infrared filter and a demonstration of the filter as a simple infrared spectrometer. A varying photonic band gap filter which consists of thermally ... -
Development of left-handed composite materials and negative refracting photonic crystals with subwavelength focusing
Özbay, Ekmel (SPIE, 2005)We review the studies conducted in our group concerning electromagnetic properties of metamaterials and photonic crystals with negative effective index of refraction. In particular, we demonstate the true left handed ...