Observation of negative refraction and focusing in two-dimensional photonic crystals

Date
2006
Advisor
Supervisor
Co-Advisor
Co-Supervisor
Instructor
Source Title
Reviewed Japanese Journal of Applied Physics
Print ISSN
0021-4922
Electronic ISSN
Publisher
Institute of Physics Publishing Ltd.
Volume
45
Issue
8 A
Pages
6064 - 6070
Language
English
Type
Article
Journal Title
Journal ISSN
Volume Title
Series
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.

Course
Other identifiers
Book Title
Keywords
Band diagram, Equal 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
Citation
Published Version (Please cite this version)