Projects per year
Abstract
The terahertz (THz) spectral window is of unique interest for plenty of applications, yet we are still searching for a low-cost, continuous-wave, room-temperature THz source with high generation efficiency. Here, we propose and investigate a hybrid lithium niobate/silicon waveguide scheme to realize such an efficient THz source via difference-frequency generation. The multi-layer structure allows low-loss and strong waveguide confinements at both optical and THz frequencies, as well as a reasonable nonlinear interaction strength between the three associated waves. Our numerical simulation results show continuous-wave THz generation efficiencies as high as 3.5×10-4 W-1 at 3 THz with high tolerance to device fabrication variations, three orders of magnitude higher than current lithium-niobate-based devices. Further integrating the proposed scheme with an optical racetrack resonator could improve the conversion efficiency to 2.1×10-2 W-1. Our proposed THz source could become a compact and cost-effective solution for future spectroscopy, communications and remote sensing systems.
Original language | English |
---|---|
Pages (from-to) | 16477-16486 |
Journal | Optics Express |
Volume | 29 |
Issue number | 11 |
Online published | 13 May 2021 |
DOIs | |
Publication status | Published - 24 May 2021 |
Publisher's Copyright Statement
- © 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement.
Fingerprint
Dive into the research topics of 'Efficient terahertz generation scheme in a thin-film lithium niobate-silicon hybrid platform'. Together they form a unique fingerprint.Projects
- 2 Finished
-
GRF: Efficient Terahertz Generation in Nanophotonic Lithium Niobate Waveguides
WANG, C. (Principal Investigator / Project Coordinator)
1/09/20 → 28/02/25
Project: Research
-
ECS: Integrated Lithium Niobate Photonics for Millimeter-wave Applications
WANG, C. (Principal Investigator / Project Coordinator)
1/11/19 → 8/04/24
Project: Research