Internal Asymmetric Plasmonic Slot Waveguide for Third Harmonic Generation with Large Fabrication Tolerance
Source abstract
Abstract
We propose an internal asymmetric plasmonic slot waveguide (IAPSW) containing two different materials in the slot region for third harmonic generation (THG) from 2.25 μm. In the IAPSW, the required phase matching condition is satisfied between the 0th-order mode at the fundamental frequency and 1st-order mode at the third harmonic frequency. By choosing an appropriate slot geometry and materials, the third harmonic electric field distribution can be engineered to significantly enhance the nonlinear overlap coefficient for THG. According to our simulation, a conversion efficiency up to 0.67 % with 1 W pump power is predicted within a ∼10 μm IAPSW. Additionally, the waveguide shows large fabrication tolerance in terms of geometry parameters. The proposed waveguide can find potential applications for high-speed all-optical signal processing.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Photonic and Optical Devices · Plasmonic and Surface Plasmon Research · Optical Network Technologies
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References (36)
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