Experimental demonstration of self-collimation inside a three-dimensional photonic crystal.
We present our experimental demonstration of self-collimation inside a three-dimensional (3D) simple cubic photonic crystal at microwave frequencies. The photonic crystal was designed with unique dispersion property and fabricated by a high precision computer-controlled machine. The self-collimation modes were excited by a grounded waveguide feeding and detected by a scanning monopole. Self-collimation of electromagnetic waves in the 3D photonic crystal was demonstrated by measuring the 3D field distribution, which was shown as a narrow collimated beam inside the 3D photonic crystal but a diverged beam in the absence of the photonic crystal.
Lu
Zhaolin
Z
Department of Electrical and Computer Engineering, University of Delaware, Newark, 19716, USA.
Shi
Shouyuan
S
Murakowski
Janusz A
JA
Schneider
Garrett J
GJ
Schuetz
Christopher A
CA
Prather
Dennis W
DW