Investigation of Germanium-Loaded Slot Waveguides for Mid-Infrared Third Harmonic Generation
| Autor: | Kaixuan Ren, Xu Wu, Perry Shum Ping, Zhuo Cheng, Tianye Huang, Songnian Fu, Bingwei Chen, Zhifang Wu, Xuguang Shao |
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| Rok vydání: | 2018 |
| Předmět: |
Fabrication
Biophysics Physics::Optics chemistry.chemical_element Germanium 02 engineering and technology 01 natural sciences Biochemistry law.invention 010309 optics Slot-waveguide law 0103 physical sciences Ohmic contact Physics business.industry 021001 nanoscience & nanotechnology Power (physics) Wavelength chemistry Harmonic Optoelectronics 0210 nano-technology business Waveguide Biotechnology |
| Zdroj: | Plasmonics. 13:2197-2204 |
| ISSN: | 1557-1963 1557-1955 |
| Popis: | In this paper, we propose a metal-semiconductor-metal slot waveguide (MSMSW) for producing mid-infrared (MIR) light from 10.2 μm by means of third harmonic generation (THG). In this waveguide, the required interaction length is limited by the large Ohmic loss, and therefore, perfect phase-matching condition (PMC) which ensures long coherent length is not necessary. Without the limitation of perfect PMC, the THG interaction mainly occurs between two fundamental modes at pump and harmonic wavelength, respectively leading to high nonlinear coefficient. According to our simulation, the conversion up to ~ 9.1 × 10−4 can be achieved within micron-scale waveguide under 1 W pump power. Furthermore, the waveguide demonstrates both large fabrication error and wavelength shift tolerance. The proposed waveguide can be a promising candidate for MIR light generation with large integration capability. |
| Databáze: | OpenAIRE |
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