Quantum dot superluminescent diodes for optical coherence tomography: Device engineering

Purnima D L Greenwood; David T D Childs; Kenneth Kennedy; Kristian M. Groom; Maxime Hugues; Mark Hopkinson; Richard A. Hogg; Nikola Krstajić; Louise E. Smith; Stephen J. Matcher; Marco Bonesi; Sheila MacNeil; Rod Smallwood

doi:10.1109/JSTQE.2009.2038720

Quantum dot superluminescent diodes for optical coherence tomography: Device engineering

Purnima D L Greenwood, David T D Childs, Kenneth Kennedy, Kristian M. Groom, Maxime Hugues, Mark Hopkinson, Richard A. Hogg, Nikola Krstajić, Louise E. Smith, Stephen J. Matcher, Marco Bonesi, Sheila MacNeil, Rod Smallwood

Research output: Contribution to journal › Article › peer-review

47 Citations (Scopus)

Abstract

We present a 18 mW fiber-coupled single-mode superluminescent diode with 85 nm bandwidth for application in optical coherence tomography (OCT). First, we describe the effect of quantum dot (QD) growth temperature on optical spectrum and gain, highlighting the need for the optimization of epitaxy for broadband applications. Then, by incorporating this improved material into a multicontact device, we show how bandwidth and power can be controlled. We then go on to show how the spectral shape influences the autocorrelation function, which exhibits a coherence length of <11 $\mu$m, and relative noise is found to be 10 dB lower than that of a thermal source. Finally, we apply the optimum device to OCT of in vivo skin and show the improvement that can be made with higher power, wider bandwidth, and lower noise, respectively.

Original language	English
Article number	5445054
Pages (from-to)	1015-1022
Number of pages	8
Journal	IEEE Journal on Selected Topics in Quantum Electronics
Volume	16
Issue number	4
DOIs	https://doi.org/10.1109/JSTQE.2009.2038720
Publication status	Published - Jul 2010

Keywords

Optical coherence tomography (OCT)
quantum dot (QD)
skin imaging
superluminescent diodes (SLEDs)

ASJC Scopus subject areas

Electrical and Electronic Engineering
Atomic and Molecular Physics, and Optics

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10.1109/JSTQE.2009.2038720

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Greenwood, P. D. L., Childs, D. T. D., Kennedy, K., Groom, K. M., Hugues, M., Hopkinson, M., Hogg, R. A., Krstajić, N., Smith, L. E., Matcher, S. J., Bonesi, M., MacNeil, S., & Smallwood, R. (2010). Quantum dot superluminescent diodes for optical coherence tomography: Device engineering. IEEE Journal on Selected Topics in Quantum Electronics, 16(4), 1015-1022. Article 5445054. https://doi.org/10.1109/JSTQE.2009.2038720

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title = "Quantum dot superluminescent diodes for optical coherence tomography: Device engineering",

abstract = "We present a 18 mW fiber-coupled single-mode superluminescent diode with 85 nm bandwidth for application in optical coherence tomography (OCT). First, we describe the effect of quantum dot (QD) growth temperature on optical spectrum and gain, highlighting the need for the optimization of epitaxy for broadband applications. Then, by incorporating this improved material into a multicontact device, we show how bandwidth and power can be controlled. We then go on to show how the spectral shape influences the autocorrelation function, which exhibits a coherence length of <11 $\mu$m, and relative noise is found to be 10 dB lower than that of a thermal source. Finally, we apply the optimum device to OCT of in vivo skin and show the improvement that can be made with higher power, wider bandwidth, and lower noise, respectively.",

keywords = "Optical coherence tomography (OCT), quantum dot (QD), skin imaging, superluminescent diodes (SLEDs)",

author = "Greenwood, {Purnima D L} and Childs, {David T D} and Kenneth Kennedy and Groom, {Kristian M.} and Maxime Hugues and Mark Hopkinson and Hogg, {Richard A.} and Nikola Krstaji{\'c} and Smith, {Louise E.} and Matcher, {Stephen J.} and Marco Bonesi and Sheila MacNeil and Rod Smallwood",

year = "2010",

month = jul,

doi = "10.1109/JSTQE.2009.2038720",

language = "English",

volume = "16",

pages = "1015--1022",

journal = "IEEE Journal on Selected Topics in Quantum Electronics",

issn = "1077-260X",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

number = "4",

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Greenwood, PDL, Childs, DTD, Kennedy, K, Groom, KM, Hugues, M, Hopkinson, M, Hogg, RA, Krstajić, N, Smith, LE, Matcher, SJ, Bonesi, M, MacNeil, S & Smallwood, R 2010, 'Quantum dot superluminescent diodes for optical coherence tomography: Device engineering', IEEE Journal on Selected Topics in Quantum Electronics, vol. 16, no. 4, 5445054, pp. 1015-1022. https://doi.org/10.1109/JSTQE.2009.2038720

TY - JOUR

T1 - Quantum dot superluminescent diodes for optical coherence tomography

T2 - Device engineering

AU - Greenwood, Purnima D L

AU - Childs, David T D

AU - Kennedy, Kenneth

AU - Groom, Kristian M.

AU - Hugues, Maxime

AU - Hopkinson, Mark

AU - Hogg, Richard A.

AU - Krstajić, Nikola

AU - Smith, Louise E.

AU - Matcher, Stephen J.

AU - Bonesi, Marco

AU - MacNeil, Sheila

AU - Smallwood, Rod

PY - 2010/7

Y1 - 2010/7

N2 - We present a 18 mW fiber-coupled single-mode superluminescent diode with 85 nm bandwidth for application in optical coherence tomography (OCT). First, we describe the effect of quantum dot (QD) growth temperature on optical spectrum and gain, highlighting the need for the optimization of epitaxy for broadband applications. Then, by incorporating this improved material into a multicontact device, we show how bandwidth and power can be controlled. We then go on to show how the spectral shape influences the autocorrelation function, which exhibits a coherence length of <11 $\mu$m, and relative noise is found to be 10 dB lower than that of a thermal source. Finally, we apply the optimum device to OCT of in vivo skin and show the improvement that can be made with higher power, wider bandwidth, and lower noise, respectively.

AB - We present a 18 mW fiber-coupled single-mode superluminescent diode with 85 nm bandwidth for application in optical coherence tomography (OCT). First, we describe the effect of quantum dot (QD) growth temperature on optical spectrum and gain, highlighting the need for the optimization of epitaxy for broadband applications. Then, by incorporating this improved material into a multicontact device, we show how bandwidth and power can be controlled. We then go on to show how the spectral shape influences the autocorrelation function, which exhibits a coherence length of <11 $\mu$m, and relative noise is found to be 10 dB lower than that of a thermal source. Finally, we apply the optimum device to OCT of in vivo skin and show the improvement that can be made with higher power, wider bandwidth, and lower noise, respectively.

KW - Optical coherence tomography (OCT)

KW - quantum dot (QD)

KW - skin imaging

KW - superluminescent diodes (SLEDs)

U2 - 10.1109/JSTQE.2009.2038720

DO - 10.1109/JSTQE.2009.2038720

M3 - Article

AN - SCOPUS:77955518105

SN - 1077-260X

VL - 16

SP - 1015

EP - 1022

JO - IEEE Journal on Selected Topics in Quantum Electronics

JF - IEEE Journal on Selected Topics in Quantum Electronics

IS - 4

M1 - 5445054

ER -

Quantum dot superluminescent diodes for optical coherence tomography: Device engineering

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Keywords

ASJC Scopus subject areas

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