We propose that 2D rectangular lattice photonic crystals composed of dielectric rods can be utilized for wide-range and tunable diffraction management. The control of diffraction for a normally incident beam is achieved by either properly choosing the operating frequency or changing the refractive index of the dielectric rods. The convergent, collimated, and divergent beam behaviors corresponding to a wide range of diffraction are clearly illustrated using FDTD simulations. The tunability of diffraction around the frequency of super-collimation is also analyzed and demonstrated.
© 2014 Optical Society of America
Original Manuscript: December 10, 2013
Revised Manuscript: February 27, 2014
Manuscript Accepted: March 14, 2014
Published: April 22, 2014
Xulin Lin, Xiaogang Zhang, Kan Yao, and Xunya Jiang, "Wide-range and tunable diffraction management using 2D rectangular lattice photonic crystals," J. Opt. Soc. Am. B 31, 1145-1149 (2014)