A Diamond Terahertz Large Aperture Photoconductive Antenna Biased by a Longitudinal Field

The novel design of a terahertz large aperture photoconductive antenna (LAPCA) is reported. It features a longitudinal orientation of the bias electric field within the photoconductive substrate, and has the advantage of a small interelectrode gap, resulting in a higher field for the same applied vo...

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Published in:Photonics 2023-10, Vol.10 (10), p.1169
Main Authors: Kononenko, Vitali V., Bukin, Vladimir V., Komlenok, Maxim S., Zavedeev, Evgeny V., Kononenko, Taras V., Dezhkina, Margarita A., Ratnikov, Pavel P., Dolmatov, Timophey V., Chizhov, Pavel A., Ushakov, Alexander A., Konov, Vitaly I., Garnov, Sergey V.
Format: Article
Language:English
Subjects:
Antennas
Antennas (Electronics)
Apertures
Chemical vapor deposition
Configurations
Copper
diamond
Diamonds
Electric fields
Electrodes
Emitters
femtosecond pumping
Graphite
large aperture photoconductive antenna
laser plasma and photocurrent
Lasers
Mathematical models
Numerical analysis
Photonics
pulse THz radiation
Radiation
Semiconductors
Simulation methods
Substrates
Voltage
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creator Kononenko, Vitali V.
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Komlenok, Maxim S.
Zavedeev, Evgeny V.
Kononenko, Taras V.
Dezhkina, Margarita A.
Ratnikov, Pavel P.
Dolmatov, Timophey V.
Chizhov, Pavel A.
Ushakov, Alexander A.
Konov, Vitaly I.
Garnov, Sergey V.
description The novel design of a terahertz large aperture photoconductive antenna (LAPCA) is reported. It features a longitudinal orientation of the bias electric field within the photoconductive substrate, and has the advantage of a small interelectrode gap, resulting in a higher field for the same applied voltage. The proposed LAPCA configuration has been tested with a nitrogen-doped (∼10 ppm) synthetic monocrystalline diamond, which is a promising material for high-intensity and high-power terahertz sources. Two antennas with different high-voltage electrode realizations were assembled, pumped by a 400 nm femtosecond laser, and tested for THz emitter function. The experimental data are found to be in good correlation with the numerical simulation results. The performance of antennas with the conventional transverse E-field configuration and the novel longitudinal configuration is compared and discussed.
doi_str_mv 10.3390/photonics10101169
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subjects Antennas
Antennas (Electronics)
Apertures
Chemical vapor deposition
Configurations
Copper
diamond
Diamonds
Electric fields
Electrodes
Emitters
femtosecond pumping
Graphite
large aperture photoconductive antenna
laser plasma and photocurrent
Lasers
Mathematical models
Numerical analysis
Photonics
pulse THz radiation
Radiation
Semiconductors
Simulation methods
Substrates
Voltage
title A Diamond Terahertz Large Aperture Photoconductive Antenna Biased by a Longitudinal Field
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