Open AccessSimultaneous direct holographic fabrication of photonic cavity and graded photonic lattice with dual periodicity, dual basis, and dual symmetry
Author(s) -
David Lowell,
Jeff Lutkenhaus,
David George,
Usha Philipose,
B Chen,
Yuankun Lin
Publication year - 2017
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.25.014444
Subject(s) - photonics , photonic crystal , holography , optics , lattice (music) , talbot effect , fabrication , diffraction , basis (linear algebra) , physics , spatial light modulator , geometry , mathematics , medicine , alternative medicine , pathology , acoustics
For the first time, to the authors' best knowledge, this paper demonstrates the digital, holographic fabrication of graded, super-basis photonic lattices with dual periodicity, dual basis, and dual symmetry. Pixel-by-pixel phase engineering of the laser beam generates the highest resolution in a programmable spatial light modulator (SLM) for the direct imaging of graded photonic super-lattices. This technique grants flexibility in designing 2-D lattices with size-graded features, differing periodicities, and differing symmetries, as well as lattices having simultaneously two periodicities and two symmetries in high resolutions. By tuning the diffraction efficiency ratio from the SLM, photonic cavities can also be generated in the graded super-lattice simultaneously through a one-exposure process. A high quality factor of over 1.56 × 10 6 for a cavity mode in the graded photonic lattice with a large super-cell is predicted by simulations.