Fernandez Olvera, Anuar de Jesus ; Lu, H. ; Gossard, A. C. ; Preu, S. (2017):
Continuous-wave 1550 nm operated terahertz system using ErAs:In(Al)GaAs photo-conductors with 52 dB dynamic range at 1 THz.
In: Opt. Express, 25 (23), pp. 29492-29500. OSA, DOI: 10.1364/OE.25.029492,
[Article]
Abstract
Telecom-wavelength compatible photoconductors benefit strongly from the large amount and affordability of telecom lasers and components but there are demanding requirements on material development. We demonstrate continuous-wave (CW) photomixing with a setup that only uses ErAs:In(Al)GaAs devices with a peak dynamic range (DNR) of 78 dB and a bandwidth of ∼3.65 THz at an integration time of 300 ms and only 26 mW laser power on each device. The ErAs:InGaAs receiver further features a factor of two lower noise equivalent power (NEP) than a state-of-the-art photoconductor, despite an antenna mismatch.
Item Type: | Article |
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Erschienen: | 2017 |
Creators: | Fernandez Olvera, Anuar de Jesus ; Lu, H. ; Gossard, A. C. ; Preu, S. |
Title: | Continuous-wave 1550 nm operated terahertz system using ErAs:In(Al)GaAs photo-conductors with 52 dB dynamic range at 1 THz |
Language: | English |
Abstract: | Telecom-wavelength compatible photoconductors benefit strongly from the large amount and affordability of telecom lasers and components but there are demanding requirements on material development. We demonstrate continuous-wave (CW) photomixing with a setup that only uses ErAs:In(Al)GaAs devices with a peak dynamic range (DNR) of 78 dB and a bandwidth of ∼3.65 THz at an integration time of 300 ms and only 26 mW laser power on each device. The ErAs:InGaAs receiver further features a factor of two lower noise equivalent power (NEP) than a state-of-the-art photoconductor, despite an antenna mismatch. |
Journal or Publication Title: | Opt. Express |
Journal Volume: | 25 |
Issue Number: | 23 |
Publisher: | OSA |
Uncontrolled Keywords: | Photoconductivity; Photoconductive materials; Detectors; Far infrared or terahertz |
Divisions: | 18 Department of Electrical Engineering and Information Technology 18 Department of Electrical Engineering and Information Technology > Institute for Microwave Engineering and Photonics (IMP) 18 Department of Electrical Engineering and Information Technology > Institute for Microwave Engineering and Photonics (IMP) > Terahertz Devices and Systems 18 Department of Electrical Engineering and Information Technology > Institute for Microwave Engineering and Photonics (IMP) > Terahertz Systems Technology |
Date Deposited: | 05 Dec 2017 12:54 |
DOI: | 10.1364/OE.25.029492 |
URL / URN: | http://www.tsys.tu-darmstadt.de/Preu_ErAsInGaAs_CW |
Corresponding Links: | |
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