Germanium metasurface assisted broadband detectors
Abstract: The demand on broadband near-infrared photodetections with high responsivity is becoming increasingly eminent; however its realization remains a significant technological challenge. Here we design, fabricate, and characterize a broadband Ge photodetector (1000–1600 nm), composed of densely packed 230-nm-thick Ge disks of different diameters (255 nm, 320 nm, and 500 nm), placed on top of a 105-nm-thin Ge layer. Using experimentally measured and calculated transmission and absorption spectra, we demonstrate that the absorption and detector responsivity are increased by nearly 2 orders of magnitude, compared to the unstructured Ge photodetector, due to the excitation of magnetic dipole resonances in Ge disks, while preserving a relatively low dark current. Our approach is simple and can be easily adapted to other semiconductor material platforms and operation wavelengths to enable performance improvements of broadband photodetector devices.
- Standort
-
Deutsche Nationalbibliothek Frankfurt am Main
- Umfang
-
Online-Ressource
- Sprache
-
Englisch
- Erschienen in
-
Germanium metasurface assisted broadband detectors ; volume:12 ; number:12 ; year:2023 ; pages:2171-2177 ; extent:7
Nanophotonics ; 12, Heft 12 (2023), 2171-2177 (gesamt 7)
- Urheber
- DOI
-
10.1515/nanoph-2023-0116
- URN
-
urn:nbn:de:101:1-2023061414313333795177
- Rechteinformation
-
Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Letzte Aktualisierung
-
14.08.2025, 10:51 MESZ
Datenpartner
Deutsche Nationalbibliothek. Bei Fragen zum Objekt wenden Sie sich bitte an den Datenpartner.
Beteiligte
- Yezekyan, Torgom
- Zenin, Vladimir A.
- Thomaschewski, Martin
- Malureanu, Radu
- Bozhevolnyi, Sergey
Ähnliche Objekte (12)
Metasurface-enabled broadband multidimensional photodetectors
Broadband Spin‐Locked Metasurface Retroreflector
Alpha-event characterization for germanium detectors
Fast decomposed method to devise broadband polarization-conversion metasurface
Monolayer Plasmonic Nanoframes as Large‐Area, Broadband Metasurface Absorbers
Broadband bifunctional Luneburg–Fisheye lens based on anisotropic metasurface
Characterization of high-purity germanium detectors with amorphous germanium contacts in cryogenic liquids
Phase-tuning Metasurface for Circularly Polarized Broadside Radiation in Broadband
Broadband wireless communication with space-time-varying polarization-converting metasurface
An all-dielectric metasurface as a broadband optical frequency mixer
Metasurface enabled broadband all optical edge detection in visible frequencies
Characterization of segmented large volume, high purity germanium detectors
Metasurface-enabled broadband multidimensional photodetectors
Broadband Spin‐Locked Metasurface Retroreflector
Alpha-event characterization for germanium detectors
Fast decomposed method to devise broadband polarization-conversion metasurface
Monolayer Plasmonic Nanoframes as Large‐Area, Broadband Metasurface Absorbers
Broadband bifunctional Luneburg–Fisheye lens based on anisotropic metasurface
Characterization of high-purity germanium detectors with amorphous germanium contacts in cryogenic liquids
Phase-tuning Metasurface for Circularly Polarized Broadside Radiation in Broadband
Broadband wireless communication with space-time-varying polarization-converting metasurface
An all-dielectric metasurface as a broadband optical frequency mixer
Metasurface enabled broadband all optical edge detection in visible frequencies
Characterization of segmented large volume, high purity germanium detectors
Metasurface-enabled broadband multidimensional photodetectors
Broadband Spin‐Locked Metasurface Retroreflector
Alpha-event characterization for germanium detectors
Fast decomposed method to devise broadband polarization-conversion metasurface
Monolayer Plasmonic Nanoframes as Large‐Area, Broadband Metasurface Absorbers
Broadband bifunctional Luneburg–Fisheye lens based on anisotropic metasurface
Characterization of high-purity germanium detectors with amorphous germanium contacts in cryogenic liquids
Phase-tuning Metasurface for Circularly Polarized Broadside Radiation in Broadband
Broadband wireless communication with space-time-varying polarization-converting metasurface
An all-dielectric metasurface as a broadband optical frequency mixer
Metasurface enabled broadband all optical edge detection in visible frequencies