High saturation photocurrent THz waveguide-type MUTC-photodiodes reaching mW output power within the WR3.4 band
Fecha
2023Autor
Versión
Acceso abierto / Sarbide irekia
Tipo
Artículo / Artikulua
Versión
Versión publicada / Argitaratu den bertsioa
Impacto
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10.1364/OE.475987
Resumen
In this paper, we report on waveguide-type modified uni-traveling-carrier photodiodes
(MUTC-PDs) providing a record high output power level for non-resonant photodiodes in the
WR3.4 band. Indium phosphide (InP) based waveguide-type 1.55 µm MUTC-PDs have been
fabricated and characterized thoroughly. Maximum output powers of −0.6 dBm and −2.7
dBm were achieved at 240 GHz and 280 GHz, respective ...
[++]
In this paper, we report on waveguide-type modified uni-traveling-carrier photodiodes
(MUTC-PDs) providing a record high output power level for non-resonant photodiodes in the
WR3.4 band. Indium phosphide (InP) based waveguide-type 1.55 µm MUTC-PDs have been
fabricated and characterized thoroughly. Maximum output powers of −0.6 dBm and −2.7
dBm were achieved at 240 GHz and 280 GHz, respectively. This has been accomplished by an
optimized layer structure and doping profile design that takes transient carrier dynamics into
account. An energy-balance model has been developed to study and optimize carrier transport
at high optical input intensities. The advantageous THz capabilities of the optimized MUTC
layer structure are confirmed by experiments revealing a transit time limited cutoff frequency
of 249 GHz and a saturation photocurrent beyond 20 mA in the WR3.4 band. The responsivity
for a 16 µm long waveguide-type THz MUTC-PD is found to be 0.25 A/W. In addition, bow-tie
antenna integrated waveguide-type MUTC-PDs are fabricated and reported to operate up to 0.7
THz above a received power of −40 dBm. [--]
Materias
Waveguide-type MUTC-photodiodes,
WR3.4 band
Editor
Optica
Publicado en
Optics Express, 31(4), 6484-6498
Departamento
Universidad Pública de Navarra. Departamento de Ingeniería Eléctrica, Electrónica y de Comunicación /
Nafarroako Unibertsitate Publikoa. Ingeniaritza Elektrikoa, Elektronikoa eta Telekomunikazio Ingeniaritza Saila
Versión del editor
Entidades Financiadoras
This work was supported by the Deutsche Forschungsgemeinschaft (DFG, German
Research Foundation) – TRR 196 MARIE under Grant 287022738 (projects C02, C06 and C07). Deutsche Forschungsgemeinschaft (Project-ID 287022738– CRC/TRR 196); Bundesministerium für
Bildung und Forschung (6GEM, grant No.16KISK039, NRW/EFRE THzIZ, grant No. EFRE-0400215, Open6GHub,
grant No.16KISK017).