Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/137485
Title: Room-temperature, wide-band, quantum well infrared photodetector for microwave optical links at 4.9 μm wavelength
Authors: Rodriguez, Etienne
Mottaghizadeh, Alireza
Gacemi, Djamal
Palaferri, Daniele
Asghari, Zahra
Jeannin, Mathieu
Vasanelli, Angela
Bigioli, Azzurra
Todorov, Yanko
Beck, Mattias
Faist, Jerome
Wang, Qi Jie
Sirtori, Carlo
Keywords: Engineering::Electrical and electronic engineering
Issue Date: 2018
Source: Rodriguez, E., Mottaghizadeh, A., Gacemi, D., Palaferri, D., Asghari, Z., Jeannin, M., ... Sirtori, C. (2018). Room-temperature, wide-band, quantum well infrared photodetector for microwave optical links at 4.9 μm wavelength. ACS Photonics, 5(9), 3689-3694. doi:10.1021/acsphotonics.8b00704
Journal: ACS Photonics
Abstract: High-speed, room-temperature, quantum well infrared photodetectors (QWIPs) at λ ∼ 4.9 μm have been realized in a strain compensated In0.1Ga0.9As/Al0.4Ga0.6As heterostructure grown on a GaAs substrate. The high-speed properties at room temperature have been optimized by using a specifically designed air-bridge structure, which greatly reduces the time constant of the effective RC circuit, thus, allowing transmission and detection of high-frequency signals. By modulating a high-speed quantum cascade laser (QCL) centered at λ ∼ 4.7 μm, we were able to record a modulation of the photocurrent up to ∼26 GHz, which is limited by our setup. At 300 K and under a bias voltage of ?5 V our device shows high responsivity and detectivity of 100 mA/W and 1 × 107 Jones, respectively. The developed high-performance QWIPs at this wavelength are highly promising for optical heterodyne measurement, high-speed free space communications in microwave optical links and frequency comb QCLs characterisations.
URI: https://hdl.handle.net/10356/137485
ISSN: 2330-4022
DOI: 10.1021/acsphotonics.8b00704
Rights: This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Photonics, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acsphotonics.8b00704
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles

Files in This Item:
File Description SizeFormat 
Room temperature, wide-band QWIP for microwave optical links at 4-9 µm wavelength.pdf685.15 kBAdobe PDFView/Open

SCOPUSTM   
Citations 10

24
Updated on Oct 1, 2022

Web of ScienceTM
Citations 10

20
Updated on Sep 29, 2022

Page view(s)

191
Updated on Oct 1, 2022

Download(s) 50

138
Updated on Oct 1, 2022

Google ScholarTM

Check

Altmetric


Plumx

Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.