Open AccessOptimized emission in nanorod arrays through quasi-aperiodic inverse design
Author(s) -
Patrick D. Anderson,
Michelle L. Povinelli
Publication year - 2015
Publication title -
optics letters/optics index
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.524
H-Index - 272
eISSN - 1071-2763
pISSN - 0146-9592
DOI - 10.1364/ol.40.002672
Subject(s) - aperiodic graph , inverse , nanorod , optics , finite difference time domain method , spontaneous emission , materials science , quantum optics , simple (philosophy) , quantum , optoelectronics , physics , nanotechnology , mathematics , quantum mechanics , laser , geometry , philosophy , epistemology , combinatorics
We investigate a new class of quasi-aperiodic nanorod structures for the enhancement of incoherent light emission. We identify one optimized structure using an inverse design algorithm and the finite-difference time-domain method. We carry out emission calculations on both the optimized structure as well as a simple periodic array. The optimized structure achieves nearly perfect light extraction while maintaining a high spontaneous emission rate. Overall, the optimized structure can achieve a 20%-42% increase in external quantum efficiency relative to a simple periodic design, depending on material quality.