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Title: Tailorable Optical Response of Au-LiNbO3 Hybrid Metamaterial Thin Films for Optical Waveguide Applications

Journal Article · · Advanced Optical Materials

Photonic integrated circuits require various optical materials with versatile optical properties and easy on–chip device integration. To address such needs, a well–designed nanoscale metal–oxide metamaterial, that is, plasmonic Au nanoparticles embedded in nonlinear LiNbO3 (LNO) matrix, is demonstrated with tailorable optical response. Specifically, epitaxial and single–domain LNO thin films with tailored Au nanoparticle morphologies (i.e., various nanoparticle sizes and densities), are grown by a pulsed laser deposition method. The optical measurement presents obvious surface plasmon resonance and dramatically varied complex dielectric function because of the embedded Au nanoparticles, and its response can be well tailored by varying the size and density of Au nanoparticles. An optical waveguide structure based on the thin film stacks of a–Si on SiO2/Au–LNO is fabricated and exhibits low optical dispersion with an optimized evanescent field staying in the LNO–Au active layer. Furthermore, the hybrid Au–LNO metamaterial thin films provide a novel platform for tunable optical materials and their future on–chip integrations in photonic–based integrated circuits.

Research Organization:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC52-06NA25396
OSTI ID:
1480033
Report Number(s):
LA-UR-18-29545
Journal Information:
Advanced Optical Materials, Vol. 6, Issue 19; ISSN 2195-1071
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 26 works
Citation information provided by
Web of Science

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Cited By (2)

Self-Assembled Ordered Three-Phase Au-BaTiO 3 -ZnO Vertically Aligned Nanocomposites Achieved by a Templating Method journal December 2018
AlN-based hybrid thin films with self-assembled plasmonic Au and Ag nanoinclusions journal January 2019