Enhance the Optical Intensity of a THz Photomixer Using a Plasmonic Material Filled Two Dimensional Photonic Crystal
A THz photomixer has been incorporated with a two dimensional photonic crystal, 2D-PhC, as a reflector to confine more optical power in the low temperature grown Gallium Arsenide, LT-GaAs, photoconductive substrate. Inserteing plasmonic rods in the air-gaps of the 2D-PhC is proposed in order to cons...
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Published in | Antennas and Propagation Conference 2019 (APC-2019) p. 15 |
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Main Authors | , |
Format | Conference Proceeding |
Language | English |
Published |
Stevenage, UK
IET
2019
The Institution of Engineering & Technology |
Subjects | |
Online Access | Get full text |
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Abstract | A THz photomixer has been incorporated with a two dimensional photonic crystal, 2D-PhC, as a reflector to confine more optical power in the low temperature grown Gallium Arsenide, LT-GaAs, photoconductive substrate. Inserteing plasmonic rods in the air-gaps of the 2D-PhC is proposed in order to conserve the power in the substrate as well as generate an extra plasmonic effect between electrodes and rods as well as between the adjacent rods. The simulation results demonstrate that the optical E-field can be enhanced by 2.1 times. Consequently, the generated THz power can be improved by a factor of 18 for the same incident optical source power. |
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AbstractList | A THz photomixer has been incorporated with a two dimensional photonic crystal, 2D-PhC, as a reflector to confine more optical power in the low temperature grown Gallium Arsenide, LT-GaAs, photoconductive substrate. Inserteing plasmonic rods in the air-gaps of the 2D-PhC is proposed in order to conserve the power in the substrate as well as generate an extra plasmonic effect between electrodes and rods as well as between the adjacent rods. The simulation results demonstrate that the optical E-field can be enhanced by 2.1 times. Consequently, the generated THz power can be improved by a factor of 18 for the same incident optical source power. |
Author | Xiaohang Li Khamas, S.K |
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Copyright | Copyright The Institution of Engineering & Technology Nov 11, 2019 |
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DOI | 10.1049/cp.2019.0703 |
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Keywords | optical elements photoconductivity terahertz wave generation incident optical source power optical intensity microwave photonics plasmonic effect THz power plasmonic material filled two-dimensional photonic crystal 2D-PhC plasmonic rods optical E-field adjacent rods gallium arsenide electrodes low temperature grown gallium arsenide GaAs THz photomixer optical power air-gaps plasmonics reflector photonic crystals photoconductive substrate LT-GaAs III-V semiconductors |
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Snippet | A THz photomixer has been incorporated with a two dimensional photonic crystal, 2D-PhC, as a reflector to confine more optical power in the low temperature... |
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SubjectTerms | Gallium arsenide Low temperature Microwave photonics Optical elements, devices and systems Optical materials Other optical system components Photonic bandgap materials Photonic crystals Plasmonics Rods Substrates |
Title | Enhance the Optical Intensity of a THz Photomixer Using a Plasmonic Material Filled Two Dimensional Photonic Crystal |
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