Goldberg, G.R., Boldin, A., Andersson, S. et al. (7 more authors) (2017) Gallium Nitride Super-Luminescent Light Emitting Diodes for Optical Coherence Tomography Applications. IEEE Journal of Selected Topics in Quantum Electronics, 23 (6). ISSN 2326-5442
Abstract
Optical coherence tomography (OCT) exploits the coherent properties of light to permit noninvasive and in situ imaging of biological tissues. By expanding the range of OCT light sources from the traditional telecoms wavelengths to include ~400 nm gallium nitride (GaN) based superluminescent light emitting diodes (SLEDs) subcellular axial and lateral resolution could be achieved, provided enhanced bandwidth is also achieved. Due to the focus on high-power applications for GaN SLEDs, there has been limited work on increasing the source bandwidth. In this paper, we demonstrate for the first time a ~400 nm GaN SLED with >10 nm bandwidth employed within an OCT system, where an axial resolution of ~7 μm is achieved. Bespoke GaN SLEDs suggest that <;4 μm axial resolution imaging is imminent for short wavelength devices.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2017 IEEE. |
Keywords: | Axial resolution; broad bandwidth; gallium nitride superluminescent light emitting diodes; optical coherence tomography |
Dates: |
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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: | 22 Sep 2017 11:06 |
Last Modified: | 29 Jun 2018 14:58 |
Published Version: | https://doi.org/10.1109/JSTQE.2017.2732941 |
Status: | Published |
Publisher: | IEEE |
Refereed: | Yes |
Identification Number: | 10.1109/JSTQE.2017.2732941 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:121163 |