Evaluation of a swept-laser optical coherence tomography light source based on a novel quantum-dot based semiconductor optical amplifier

Nik Krstajic; David Childs; Negin Peyvast; Deepa Kasaragod; Stephen J. Matcher; Igor Krestnikov; Richard Hogg

doi:10.1117/12.889247

Evaluation of a swept-laser optical coherence tomography light source based on a novel quantum-dot based semiconductor optical amplifier

Nik Krstajic, David Childs, Negin Peyvast, Deepa Kasaragod, Stephen J. Matcher, Igor Krestnikov, Richard Hogg

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

We describe a simple swept-laser design that characterizes the emission bandwidth, linewidth, spectral shape and output noise. A short cavity Littmann configuration is used in which the semiconductor optical amplifier (SOA) lasing wavelength is tuned by a galvanometer with an 830 grooves per mm diffraction grating. A 3dB coupler extracts light from the cavity formed by the grating and end-mirror and the optical output uses to illuminate a balanced swept source optical coherence tomography (SS-OCT) interferometer incorporating a circulator, 3dB coupler, dispersion compensator and balanced detector. The SOA (SOA-1200-70-PM-20sB, Innolume GmbH) uses a novel III-V semiconductor quantum-dot gain medium. ASE is emitted between 1150nm and 1300nm at a drive current of 700mA. When used in the Littmann cavity laser a coherence length of about 10mm is produced, which is tunable over 60nm. The peak output power is 12mW. The swept-laser has been incorporated into a fiber-based SS-OCT system and used to image biological tissues. Axial resolution in air is 12 microns. Images of human palmar skin in-vivo are demonstrated, showing good resolution and contrast, with the stratum corneum, epidermis, rete ridges and epidermal-dermal junction visualized.

Original language	English
Title of host publication	Optical Coherence Tomography and Coherence Techniques V
Volume	8091
DOIs	https://doi.org/10.1117/12.889247
Publication status	Published - 1 Aug 2011
Event	Optical Coherence Tomography and Coherence Techniques V - Munich, Germany Duration: 24 May 2011 → 26 May 2011

Conference

Conference	Optical Coherence Tomography and Coherence Techniques V
Country/Territory	Germany
City	Munich
Period	24/05/11 → 26/05/11

Keywords

OCT
quantum dot
skin
SOA
swept-laser

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Biomaterials
Radiology Nuclear Medicine and imaging

Access to Document

10.1117/12.889247

Cite this

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title = "Evaluation of a swept-laser optical coherence tomography light source based on a novel quantum-dot based semiconductor optical amplifier",

abstract = "We describe a simple swept-laser design that characterizes the emission bandwidth, linewidth, spectral shape and output noise. A short cavity Littmann configuration is used in which the semiconductor optical amplifier (SOA) lasing wavelength is tuned by a galvanometer with an 830 grooves per mm diffraction grating. A 3dB coupler extracts light from the cavity formed by the grating and end-mirror and the optical output uses to illuminate a balanced swept source optical coherence tomography (SS-OCT) interferometer incorporating a circulator, 3dB coupler, dispersion compensator and balanced detector. The SOA (SOA-1200-70-PM-20sB, Innolume GmbH) uses a novel III-V semiconductor quantum-dot gain medium. ASE is emitted between 1150nm and 1300nm at a drive current of 700mA. When used in the Littmann cavity laser a coherence length of about 10mm is produced, which is tunable over 60nm. The peak output power is 12mW. The swept-laser has been incorporated into a fiber-based SS-OCT system and used to image biological tissues. Axial resolution in air is 12 microns. Images of human palmar skin in-vivo are demonstrated, showing good resolution and contrast, with the stratum corneum, epidermis, rete ridges and epidermal-dermal junction visualized.",

keywords = "OCT, quantum dot, skin, SOA, swept-laser",

author = "Nik Krstajic and David Childs and Negin Peyvast and Deepa Kasaragod and Matcher, {Stephen J.} and Igor Krestnikov and Richard Hogg",

year = "2011",

month = aug,

day = "1",

doi = "10.1117/12.889247",

language = "English",

isbn = "9780819486882",

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note = "Optical Coherence Tomography and Coherence Techniques V ; Conference date: 24-05-2011 Through 26-05-2011",

}

Krstajic, N, Childs, D, Peyvast, N, Kasaragod, D, Matcher, SJ, Krestnikov, I & Hogg, R 2011, Evaluation of a swept-laser optical coherence tomography light source based on a novel quantum-dot based semiconductor optical amplifier. in Optical Coherence Tomography and Coherence Techniques V. vol. 8091, 80911S, Optical Coherence Tomography and Coherence Techniques V, Munich, Germany, 24/05/11. https://doi.org/10.1117/12.889247

TY - GEN

T1 - Evaluation of a swept-laser optical coherence tomography light source based on a novel quantum-dot based semiconductor optical amplifier

AU - Krstajic, Nik

AU - Childs, David

AU - Peyvast, Negin

AU - Kasaragod, Deepa

AU - Matcher, Stephen J.

AU - Krestnikov, Igor

AU - Hogg, Richard

PY - 2011/8/1

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N2 - We describe a simple swept-laser design that characterizes the emission bandwidth, linewidth, spectral shape and output noise. A short cavity Littmann configuration is used in which the semiconductor optical amplifier (SOA) lasing wavelength is tuned by a galvanometer with an 830 grooves per mm diffraction grating. A 3dB coupler extracts light from the cavity formed by the grating and end-mirror and the optical output uses to illuminate a balanced swept source optical coherence tomography (SS-OCT) interferometer incorporating a circulator, 3dB coupler, dispersion compensator and balanced detector. The SOA (SOA-1200-70-PM-20sB, Innolume GmbH) uses a novel III-V semiconductor quantum-dot gain medium. ASE is emitted between 1150nm and 1300nm at a drive current of 700mA. When used in the Littmann cavity laser a coherence length of about 10mm is produced, which is tunable over 60nm. The peak output power is 12mW. The swept-laser has been incorporated into a fiber-based SS-OCT system and used to image biological tissues. Axial resolution in air is 12 microns. Images of human palmar skin in-vivo are demonstrated, showing good resolution and contrast, with the stratum corneum, epidermis, rete ridges and epidermal-dermal junction visualized.

AB - We describe a simple swept-laser design that characterizes the emission bandwidth, linewidth, spectral shape and output noise. A short cavity Littmann configuration is used in which the semiconductor optical amplifier (SOA) lasing wavelength is tuned by a galvanometer with an 830 grooves per mm diffraction grating. A 3dB coupler extracts light from the cavity formed by the grating and end-mirror and the optical output uses to illuminate a balanced swept source optical coherence tomography (SS-OCT) interferometer incorporating a circulator, 3dB coupler, dispersion compensator and balanced detector. The SOA (SOA-1200-70-PM-20sB, Innolume GmbH) uses a novel III-V semiconductor quantum-dot gain medium. ASE is emitted between 1150nm and 1300nm at a drive current of 700mA. When used in the Littmann cavity laser a coherence length of about 10mm is produced, which is tunable over 60nm. The peak output power is 12mW. The swept-laser has been incorporated into a fiber-based SS-OCT system and used to image biological tissues. Axial resolution in air is 12 microns. Images of human palmar skin in-vivo are demonstrated, showing good resolution and contrast, with the stratum corneum, epidermis, rete ridges and epidermal-dermal junction visualized.

KW - OCT

KW - quantum dot

KW - skin

KW - SOA

KW - swept-laser

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DO - 10.1117/12.889247

M3 - Conference contribution

AN - SCOPUS:79960750648

SN - 9780819486882

VL - 8091

BT - Optical Coherence Tomography and Coherence Techniques V

T2 - Optical Coherence Tomography and Coherence Techniques V

Y2 - 24 May 2011 through 26 May 2011

ER -

Evaluation of a swept-laser optical coherence tomography light source based on a novel quantum-dot based semiconductor optical amplifier

Abstract

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Keywords

ASJC Scopus subject areas

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