Chun Xia,1 Stephen M. Kuebler,1 Noel P. Martinez,1 Manuel Martinez,2 Raymond C. Rumpf,2 Jimmy Touma3
1CREOL, The College of Optics and Photonics, Univ. of Central Florida (United States) 2Univ. of Texas at El Paso (United States) 3Air Force Research Lab. (United States)
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We report a computational study of how light propagates within a self-collimating, hexagonal photonic crystal. The photonic crystal can be described as a two-dimensional hexagonal lattice of air holes extruded into the third dimension. While traveling inside the device, light is forced by self-collimation to propagate along the extrusion direction. Finite-difference time-domain calculations show that the lattice must have at least four rings of unit cells surrounding the innermost unit cells where light is centered for it to propagate under strong self-collimation, with low scattering loss.
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Chun Xia, Stephen M. Kuebler, Noel P. Martinez, Manuel Martinez, Raymond C. Rumpf, Jimmy Touma, "Wide-band self-collimation in low refractive index hexagonal lattice," Proc. SPIE 12010, Photonic and Phononic Properties of Engineered Nanostructures XII, 1201004 (5 March 2022); https://doi.org/10.1117/12.2608627