Development of an ultra-broadband SLD light source based on multi-wavlengths quantum dots and its application to medical OCT
Project/Area Number |
25286052
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Research Category |
Grant-in-Aid for Scientific Research (B)
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Allocation Type | Partial Multi-year Fund |
Section | 一般 |
Research Field |
Crystal engineering
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Research Institution | Wakayama University |
Principal Investigator |
Ozaki Nobuhiko 和歌山大学, システム工学部, 准教授 (30344873)
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Co-Investigator(Kenkyū-buntansha) |
SUGIMOTO Yoshimasa 物質・材料研究機構, 先端ナノフォトニクス材料ユニット, 主席研究員 (60415784)
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Co-Investigator(Renkei-kenkyūsha) |
AKASAKA Takashi 和歌山県立医科大学, 医学部, 教授 (70322584)
KUBO Takashi 和歌山県立医科大学, 医学部, 准教授 (30316096)
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Project Period (FY) |
2013-04-01 – 2016-03-31
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Project Status |
Completed (Fiscal Year 2015)
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Budget Amount *help |
¥17,160,000 (Direct Cost: ¥13,200,000、Indirect Cost: ¥3,960,000)
Fiscal Year 2015: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2014: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2013: ¥9,360,000 (Direct Cost: ¥7,200,000、Indirect Cost: ¥2,160,000)
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Keywords | 量子ドット / 分子線エピタキシー(MBE) / 近赤外広帯域光源 / スーパールミネッセントダイオード(SLD) / 光コヒーレンストモグラフィー(OCT) / 結晶工学 / SLD |
Outline of Final Research Achievements |
We have developed an ultra-broadband SLD light source based on multi-wavelengths quantum dots and applied it to the medical optical coherence tomography (OCT) system. A current-driven light source including four layers of QDs with different emission wavelengths (QD-SLD) exhibits a broadband (85-nm-bandwidth) emission centered at approximately 1.2μm with a Gaussian-like spectral shape at room temperature. Spectral-domain OCT (SD-OCT) using the QD-SLD as a light source was developed and imaging with the SD-OCT was demonstrated. The axial resolution was estimated to be approximately 8 μm in air and no apparent side lobes appeared beside the point spread function, indicating the effectiveness of the QD-SLD for high-resolution, noise-reduced OCT imaging.
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Report
(4 results)
Research Products
(41 results)
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[Journal Article] Superluminescent diode with a broadband gain based on self-assembled InAs quantum dots and segmented contacts for an optical coherence tomography light source2016
Author(s)
Nobuhiko Ozaki, David T. D. Childs, Jayanta Sarma, Timothy S. Roberts, Takuma Yasuda, Hiroshi Shibata, Hirotaka Ohsato, Eiichiro Watanabe, Naoki Ikeda, Yoshimasa Sugimoto, and Richard A. Hogg
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Journal Title
J. Appl. Phys.
Volume: 119
Issue: 8
Pages: 0831071-7
DOI
Related Report
Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
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[Journal Article] Imaging of spectral-domain optical coherence tomography using a superluminescent diode based on InAs quantum dots emitting broadband spectrum with Gaussian-like shape2015
Author(s)
H. Shibata, N. Ozaki, T. Yasuda, S. Ohkouchi, N. Ikeda, H. Ohsato, E. Watanabe, Y. Sugimoto, K. Furuki, K. Miyaji, and R. A. Hogg
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Journal Title
Jpn. J. Appl. Phys.
Volume: 54
Issue: 4S
Pages: 04DG07-04DG07
DOI
NAID
Related Report
Peer Reviewed / Acknowledgement Compliant
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[Journal Article] Integration of Emission-Wavelength-Controlled InAs Quantum Dots for Ultrabroadband Near-infrared Light Source2014
Author(s)
Nobuhiko Ozaki, Koichi Takeuchi, Yuji Hino, Yohei Nakatani, Takuma Yasuda, Shunsuke Ohkouchi, Eiichiro Watanabe, Hirotaka Ohsato, Naoki Ikeda, Yoshimasa Sugimoto, Edmund Clarke, and Richard A. Hogg
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Journal Title
Nanomaterials and Nanotechnology
Volume: 4
Pages: 261-17
DOI
Related Report
Peer Reviewed / Open Access / Acknowledgement Compliant
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[Presentation] Optical coherence tomography using a low-coherence light source based on emission-wavelength-controlled self-assembled InAs quantum dots2015
Author(s)
Nobuhiko Ozaki, Hiroshi Shibata, Takuma Yasuda, Hirotaka Ohosato, Eiichiro Watanabe, Naoki Ikeda, Yoshimasa Sugimoto, Kenji Furuki, Kunio Miyaji, Shunsuke Ohkouchi, Richard A. Hogg
Organizer
5th Int. Workshop on Epitaxial Growth and Fundamental Properties of Semiconductor Nanostructures
Place of Presentation
Hsinchu, Taiwan
Year and Date
2015-09-09
Related Report
Int'l Joint Research / Invited
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[Presentation] Superluminescent Diode with Near-infrared Broadband Emission Using Self-assembled InAs Quantum Dots for Optical Coherence Tomography2015
Author(s)
N. Ozaki, T. Yasuda, H. Shibata, S. Ohkouchi, H. Ohsato, E. Watanabe, N. Ikeda, Y. Sugimoto, D. T. D. Childs, and R.A. Hogg
Organizer
The 18th European Molecular Beam Epitaxy Workshop
Place of Presentation
Canazei, Italy
Year and Date
2015-03-16
Related Report
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[Presentation] Optical Coherence Tomography Imaging by Using a Superluminescent Diode Based on InAs/GaAs Quantum Dots2014
Author(s)
H. Shibata, T. Yasuda, S. Ohkouchi, N. Ikeda, H. Ohsato, E. Watanabe, Y. Sugimoto, K. Furuki, K. Miyaji, R.A. Hogg, and N. Ozaki
Organizer
The 2014 International Conference on Solid State Devices and Materials (SSDM2014)
Place of Presentation
Tsukuba, Japan
Year and Date
2014-09-10
Related Report
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