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 Krstajic; 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 Krstajic, Louise E. Smith, Stephen J. Matcher, Marco Bonesi, Sheila MacNeil, Rod Smallwood

School of Physics and Astronomy

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

Abstract

We present a 18 m W fiber-coupled single-mode super-luminescent 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
Pages (from-to)	1015-1022
Number of pages	8
Journal	IEEE Journal of Selected Topics in Quantum Electronics
Volume	16
Issue number	4
DOIs	https://doi.org/10.1109/JSTQE.2009.2038720
Publication status	Published - 2010

Keywords

Optical coherence tomography (OCT)
quantum dot (QD)
skin imaging
superluminescent diodes (SLEDs)
MOLECULAR-BEAM EPITAXY
ULTRAHIGH-RESOLUTION
HIGH-POWER
NOISE
PERFORMANCE
SPECTRUM
GROWTH
LASER
SYSTEMS

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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., Krstajic, 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 of Selected Topics in Quantum Electronics, 16(4), 1015-1022. https://doi.org/10.1109/JSTQE.2009.2038720

@article{ec161eebffba4748becbb8ae50ffe1d3,

title = "Quantum Dot Superluminescent Diodes for Optical Coherence Tomography: Device Engineering",

abstract = "We present a 18 m W fiber-coupled single-mode super-luminescent 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), MOLECULAR-BEAM EPITAXY, ULTRAHIGH-RESOLUTION, HIGH-POWER, NOISE, PERFORMANCE, SPECTRUM, GROWTH, LASER, SYSTEMS",

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 Krstajic and Smith, {Louise E.} and Matcher, {Stephen J.} and Marco Bonesi and Sheila MacNeil and Rod Smallwood",

year = "2010",

doi = "10.1109/JSTQE.2009.2038720",

language = "English",

volume = "16",

pages = "1015--1022",

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

issn = "1077-260X",

publisher = "IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC",

number = "4",

}

Greenwood, PDL, Childs, DTD, Kennedy, K, Groom, KM, Hugues, M, Hopkinson, M, Hogg, RA, Krstajic, N, Smith, LE, Matcher, SJ, Bonesi, M, MacNeil, S & Smallwood, R 2010, 'Quantum Dot Superluminescent Diodes for Optical Coherence Tomography: Device Engineering', IEEE Journal of Selected Topics in Quantum Electronics, vol. 16, no. 4, pp. 1015-1022. https://doi.org/10.1109/JSTQE.2009.2038720

TY - JOUR

T1 - Quantum Dot Superluminescent Diodes for Optical Coherence Tomography: 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 - Krstajic, Nikola

AU - Smith, Louise E.

AU - Matcher, Stephen J.

AU - Bonesi, Marco

AU - MacNeil, Sheila

AU - Smallwood, Rod

PY - 2010

Y1 - 2010

N2 - We present a 18 m W fiber-coupled single-mode super-luminescent 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 m W fiber-coupled single-mode super-luminescent 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)

KW - MOLECULAR-BEAM EPITAXY

KW - ULTRAHIGH-RESOLUTION

KW - HIGH-POWER

KW - NOISE

KW - PERFORMANCE

KW - SPECTRUM

KW - GROWTH

KW - LASER

KW - SYSTEMS

U2 - 10.1109/JSTQE.2009.2038720

DO - 10.1109/JSTQE.2009.2038720

M3 - Article

SN - 1077-260X

VL - 16

SP - 1015

EP - 1022

JO - IEEE Journal of Selected Topics in Quantum Electronics

JF - IEEE Journal of Selected Topics in Quantum Electronics

IS - 4

ER -

Quantum Dot Superluminescent Diodes for Optical Coherence Tomography: Device Engineering

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Keywords

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