Zhou, X., Hobbs, M.J., White, B.S. et al. (3 more authors) (2014) An InGaAlAs-InGaAs two-color photodetector for ratio thermometry. IEEE Transactions on Electronic Devices, 61 (3). 838 - 843. ISSN 0018-9383
Abstract
We report the evaluation of a molecular-beam epitaxy grown two-color photodetector for radiation thermometry. This two-color photodetector consists of two p+in+ diodes, an In0.53Ga0.25Al0.22As (hereafter InGaAlAs) p+in+ diode, which has a cutoff wavelength of 1180 nm, and an In0.53Ga0.47As (hereafter InGaAs) p+in+ diode with a cutoff wavelength of 1700 nm. Our simple monolithic integrated two-color photodetector achieved comparable output signal and signal-to-noise (SNR) ratio to that of a commercial two-color Si-InGaAs photodetector. The InGaAlAs and InGaAs diodes detect blackbody temperature as low as 275°C and 125°C, respectively, with an SNR above 10. The temperature errors extracted from our data are 4°C at 275°C for the InGaAlAs diode and 2.3°C at 125°C for the InGaAs diode. As a ratio thermometer, our two-color photodetector achieves a temperature error of 12.8°C at 275°C, but this improves with temperature to 0.1°C at 450°C. These results demonstrated the potential of InGaAlAs-InGaAs two-color photodetector for the development of high performance two-color array detectors for radiation thermometry and thermal imaging of hot objects.
Metadata
Item Type: | Article |
---|---|
Authors/Creators: |
|
Copyright, Publisher and Additional Information: | © 2014 IEEE. This is an author produced version of a paper subsequently published in IEEE Transactions on Electronic Devices. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Radiation thermometry; temperature measurement; two-color photodetector |
Dates: |
|
Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Electronic and Electrical Engineering (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 23 Jun 2014 10:22 |
Last Modified: | 21 Mar 2018 03:14 |
Published Version: | http://dx.doi.org/10.1109/TED.2013.2297409 |
Status: | Published |
Publisher: | IEEE |
Refereed: | Yes |
Identification Number: | 10.1109/TED.2013.2297409 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:79452 |