David Lowell

TL;DR: In this paper, a hybrid laser projection system with a spatial light modulator and a single reflective optical element was proposed for the holographic fabrication of graded photonic super-crystals.

TL;DR: A good agreement has been observed between fabricated holographic structures and simulated interference patterns, and these optical elements have been used to fabricate 3D photonic crystals with 4, 5 or 6-fold symmetry.

TL;DR: This paper demonstrates the digital, holographic fabrication of graded, super-basis photonic lattices with dual periodicity, dual basis, and dual symmetry in a programmable spatial light modulator for direct imaging of graded photonic super-lattices.

TL;DR: This paper presents the holographic fabrication of graded photonic super-quasi-crystals through pixel-by-pixel phase pattern engineering using a spatial light modulator and observed the golden ratio in the diameters of the diffraction rings of the fabricated quasi-crystal, indicating five-fold symmetry.

TL;DR: In this paper, a continuous electrical tuning of diffraction efficiency from transparent conducting aluminum-doped zinc oxide (AZO) gratings in the visible range (specifically 532 nm) when the AZO is under bias voltages between −1