Wide-band self-collimation in a low-refractive-index hexagonal lattice | Zendy

Chun Xia | Zendy; Stephen M. Kuebler | Zendy; Noel P. Martinez | Zendy; Manuel Martínez | Zendy; Raymond C. Rumpf | Zendy; Jimmy Touma | Zendy

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Wide-band self-collimation in a low-refractive-index hexagonal lattice

Author(s) -

Chun Xia,

Stephen M. Kuebler,

Noel P. Martinez,

Manuel Martínez,

Raymond C. Rumpf,

Jimmy Touma

Publication year - 2021

Publication title -

optics letters

Language(s) - Uncategorized

Resource type - Journals

SCImago Journal Rank - 1.524

H-Index - 272

eISSN - 1071-2763

pISSN - 0146-9592

DOI - 10.1364/ol.421860

Subject(s) - optics , materials science , refractive index , hexagonal lattice , photonic crystal , collimated light , lithography , hexagonal crystal system , wavelength , diffraction , dielectric , optoelectronics , physics , laser , chemistry , antiferromagnetism , crystallography , condensed matter physics

Wide-angle, broadband self-collimation (SC) is demonstrated in a hexagonal photonic crystal (PhC) fabricated in a low-refractive-index photopolymer by multiphoton lithography. The PhC can be described as a hexagonal array of cylindrical air holes in a block of dielectric material having a low-refractive index. Optical characterization shows that the device strongly self-collimates light at near-infrared wavelengths that span 1360 to 1610 nm. SC forces light to flow along the extrusion direction of the lattice without diffractive spreading, even when light couples into the device at high oblique angles. Numerical simulations corroborate the experimental findings.

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