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Proceedings Paper

Next-generation materials for hybrid electro-optic systems (Conference Presentation)

Paper Abstract

Recent developments in hybrid electro-optic (EO) systems, in which an organic material with an ultra-large second-order susceptibility is combined with silicon (SOH) or gold (POH) waveguides at the nanoscale. Tight confinement of the optical and RF fields in such devices has enabled operating frequencies > 300 GHz and voltage-length parameters (UπL) < 40 V-μm with existing high-performance organic electro-optic (OEO) materials. However, achieving UπL values on the order of 1 V-μm will require a new generation of OEO materials. The short path lengths within hybrid devices greatly alleviate concerns about optical loss, enabling development of OEO chromophores with extraordinarily large hyperpolarizabilities and refractive indices at telecom wavelengths. However, as device dimensions shrink, chromophore-surface interactions, space-efficiency, and refractive index anisotropy become more critical. Practical device implementations also require materials with high thermal and chemical stability and uncompromising EO performance. We have used a theory-aided design process applying classical and quantum mechanical techniques to design a new generation of OEO materials intended to meet the needs of hybrid devices. We have synthesized these materials, characterized their hyperpolarizability by hyper-Rayleigh scattering, and evaluated their bulk electro-optic behavior and prospects for implementation in nanoscale devices.

Paper Details

Date Published: 10 September 2019
Proc. SPIE 11089, Nanoengineering: Fabrication, Properties, Optics, Thin Films, and Devices XVI, 110890K (10 September 2019); doi: 10.1117/12.2530719
Show Author Affiliations
Lewis E. Johnson, Univ. of Washington (United States)
Nonlinear Materials Corp. (United States)
Huajun Xu, Univ. of Washington (United States)
Yovan de Coene, KU Leuven (Belgium)
Delwin L. Elder, Univ. of Washington (United States)
Koen Clays, KU Leuven (Belgium)
Larry R. Dalton, Univ. of Washington (United States)
Bruce H. Robinson, Univ. of Washington (United States)

Published in SPIE Proceedings Vol. 11089:
Nanoengineering: Fabrication, Properties, Optics, Thin Films, and Devices XVI
Balaji Panchapakesan; André-Jean Attias, Editor(s)

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