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 journalArticle

    40 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 languageEnglish
    Article number5445054
    Pages (from-to)1015-1022
    Number of pages8
    JournalIEEE Journal on Selected Topics in Quantum Electronics
    Volume16
    Issue number4
    DOIs
    Publication statusPublished - Jul 2010

    Fingerprint

    Optical tomography
    Semiconductor quantum dots
    Diodes
    tomography
    diodes
    quantum dots
    engineering
    bandwidth
    Bandwidth
    Optical fiber coupling
    Growth temperature
    Autocorrelation
    Epitaxial growth
    epitaxy
    low noise
    autocorrelation
    optical spectrum
    Skin
    broadband
    optimization

    Keywords

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

    Cite this

    Greenwood, P. D. L., Childs, D. T. D., Kennedy, K., Groom, K. M., Hugues, M., Hopkinson, M., ... 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. [5445054]. https://doi.org/10.1109/JSTQE.2009.2038720
    Greenwood, Purnima D L ; Childs, David T D ; Kennedy, Kenneth ; Groom, Kristian M. ; Hugues, Maxime ; Hopkinson, Mark ; Hogg, Richard A. ; Krstajić, Nikola ; Smith, Louise E. ; Matcher, Stephen J. ; Bonesi, Marco ; MacNeil, Sheila ; Smallwood, Rod. / Quantum dot superluminescent diodes for optical coherence tomography : Device engineering. In: IEEE Journal on Selected Topics in Quantum Electronics. 2010 ; Vol. 16, No. 4. pp. 1015-1022.
    @article{254bd01b57764d64a42cb337fe624d2a,
    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 Krstajić and Smith, {Louise E.} and Matcher, {Stephen J.} and Marco Bonesi and Sheila MacNeil and Rod Smallwood",
    year = "2010",
    month = "7",
    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 = "Institute of Electrical and Electronics Engineers",
    number = "4",

    }

    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

    Quantum dot superluminescent diodes for optical coherence tomography : Device engineering. / Greenwood, Purnima D L; Childs, David T D; Kennedy, Kenneth; Groom, Kristian M.; Hugues, Maxime; Hopkinson, Mark; Hogg, Richard A.; Krstajić, Nikola; Smith, Louise E.; Matcher, Stephen J.; Bonesi, Marco; MacNeil, Sheila; Smallwood, Rod.

    In: IEEE Journal on Selected Topics in Quantum Electronics, Vol. 16, No. 4, 5445054, 07.2010, p. 1015-1022.

    Research output: Contribution to journalArticle

    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

    VL - 16

    SP - 1015

    EP - 1022

    JO - IEEE Journal of Selected Topics in Quantum Electronics

    JF - IEEE Journal of Selected Topics in Quantum Electronics

    SN - 1077-260X

    IS - 4

    M1 - 5445054

    ER -