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- Publisher Website: 10.1364/OL.39.000622
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- PMID: 24487881
- WOS: WOS:000330571200054
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Article: Megahertz all-optical swept-source optical coherence tomography based on broadband amplified optical time-stretch
Title | Megahertz all-optical swept-source optical coherence tomography based on broadband amplified optical time-stretch |
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Authors | |
Issue Date | 2014 |
Publisher | Optical Society of America. The Journal's web site is located at http://www.opticsinfobase.org/current.cfm?journal=3 |
Citation | Optics Letters, 2014, v. 39 n. 3, p. 622-625 How to Cite? |
Abstract | We demonstrate all-optical ultrahigh-speed swept-source optical coherence tomography (OCT) based on amplified optical time-stretch (AOT). Such an inertia-free wavelength-swept mechanism, via group velocity dispersion, enables us to realize OCT with an A-scan rate well above MHz. More importantly, the key significance of AOT-OCT is its simultaneous broadband Raman amplification during the time-stretch process-greatly enhancing the detection sensitivity compared with prior attempts to apply optical time-stretch to OCT. Here, we report on an AOT-OCT system which is operated at an A-scan rate of 7.14 MHz, a superior roll-off performance (>2 mm/dB), a record-high sensitivity of time-stretch-based OCT (>80 dB) with a broadband gain bandwidth of 80 nm, which results in an axial resolution of approximately 15 mum. Our AOT-OCT system is thus able to, for the first time to the best of our knowledge, perform time-stretch-based OCT of biological tissue in vivo. It represents a major step forward in utilizing AOT as an alternative for achieving practical MHz OCT, without any long-term mechanical stability concerns as in typical swept-source OCT or bypassing the speed limitation of the image sensor employed in spectral-domain OCT. |
Persistent Identifier | http://hdl.handle.net/10722/202926 |
ISSN | 2023 Impact Factor: 3.1 2023 SCImago Journal Rankings: 1.040 |
ISI Accession Number ID |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Xu, J | en_US |
dc.contributor.author | Zhang, C | en_US |
dc.contributor.author | Xu, J | en_US |
dc.contributor.author | Wong, KKY | en_US |
dc.contributor.author | Tsia, KKM | en_US |
dc.date.accessioned | 2014-09-19T10:10:38Z | - |
dc.date.available | 2014-09-19T10:10:38Z | - |
dc.date.issued | 2014 | en_US |
dc.identifier.citation | Optics Letters, 2014, v. 39 n. 3, p. 622-625 | en_US |
dc.identifier.issn | 0146-9592 | - |
dc.identifier.uri | http://hdl.handle.net/10722/202926 | - |
dc.description.abstract | We demonstrate all-optical ultrahigh-speed swept-source optical coherence tomography (OCT) based on amplified optical time-stretch (AOT). Such an inertia-free wavelength-swept mechanism, via group velocity dispersion, enables us to realize OCT with an A-scan rate well above MHz. More importantly, the key significance of AOT-OCT is its simultaneous broadband Raman amplification during the time-stretch process-greatly enhancing the detection sensitivity compared with prior attempts to apply optical time-stretch to OCT. Here, we report on an AOT-OCT system which is operated at an A-scan rate of 7.14 MHz, a superior roll-off performance (>2 mm/dB), a record-high sensitivity of time-stretch-based OCT (>80 dB) with a broadband gain bandwidth of 80 nm, which results in an axial resolution of approximately 15 mum. Our AOT-OCT system is thus able to, for the first time to the best of our knowledge, perform time-stretch-based OCT of biological tissue in vivo. It represents a major step forward in utilizing AOT as an alternative for achieving practical MHz OCT, without any long-term mechanical stability concerns as in typical swept-source OCT or bypassing the speed limitation of the image sensor employed in spectral-domain OCT. | - |
dc.language | eng | en_US |
dc.publisher | Optical Society of America. The Journal's web site is located at http://www.opticsinfobase.org/current.cfm?journal=3 | - |
dc.relation.ispartof | Optics Letters | en_US |
dc.rights | Optics Letters. Copyright © Optical Society of America. | - |
dc.rights | This paper was published in Optics Letters and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/ol/abstract.cfm?uri=ol-39-3-622. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law. | - |
dc.subject.mesh | Eye - cytology | - |
dc.subject.mesh | Fingers | - |
dc.subject.mesh | Fishes | - |
dc.subject.mesh | Time Factors | - |
dc.subject.mesh | Tomography, Optical Coherence - methods | - |
dc.title | Megahertz all-optical swept-source optical coherence tomography based on broadband amplified optical time-stretch | en_US |
dc.type | Article | en_US |
dc.identifier.email | Wong, KKY: kywong04@hkucc.hku.hk | en_US |
dc.identifier.email | Tsia, KKM: tsia@hku.hk | en_US |
dc.identifier.authority | Wong, KKY=rp00189 | en_US |
dc.identifier.authority | Tsia, KKM=rp01389 | en_US |
dc.description.nature | published_or_final_version | - |
dc.identifier.doi | 10.1364/OL.39.000622 | - |
dc.identifier.pmid | 24487881 | - |
dc.identifier.scopus | eid_2-s2.0-84897471824 | - |
dc.identifier.hkuros | 240546 | en_US |
dc.identifier.hkuros | 236121 | - |
dc.identifier.volume | 39 | en_US |
dc.identifier.issue | 3 | - |
dc.identifier.spage | 622 | en_US |
dc.identifier.epage | 625 | en_US |
dc.identifier.isi | WOS:000330571200054 | - |
dc.publisher.place | United States | - |
dc.identifier.issnl | 0146-9592 | - |