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Article: 1.7  μm wavelength tunable gain-switched fiber laser and its application to spectroscopic photoacoustic imaging

Title1.7  μm wavelength tunable gain-switched fiber laser and its application to spectroscopic photoacoustic imaging
Authors
KeywordsAbsorption spectroscopy
Fiber lasers
Light absorption
Tissue
Issue Date2018
PublisherOptical Society of America. The Journal's web site is located at http://www.opticsinfobase.org/current.cfm?journal=3
Citation
Optics Letters, 2018, v. 43 n. 23, p. 5849-5852 How to Cite?
AbstractRecently demonstrated bond-selective photoacoustic (PA) imaging has revealed the importance of 1.7 μm laser sources. In this Letter, we demonstrate a gain-switched thulium-doped fiber laser with continuous tuning from 1690 to 1765 nm by using an electrically driven acousto-optical tunable filter. Micro-joule laser pulses with a shot-to-shot intensity variation of 1.6% and a pulse duration of 150 ns are obtained. The laser source is then harnessed to implement a PA microscopy system, of which the lateral resolution is estimated to be 15.6 μm by scanning the edge of a black tape. The PA spectra of butter, rapeseed oil, and adipose tissue are measured, and they show a consistent absorption peak of around 1720 nm. Photoacoustic microscopy imaging of the adipose tissue demonstrates a high optical absorption contrast of lipids and the superiority of the laser for spectroscopic PA detection.
Persistent Identifierhttp://hdl.handle.net/10722/277445
ISSN
2017 Impact Factor: 3.589
2015 SCImago Journal Rankings: 2.397

 

DC FieldValueLanguage
dc.contributor.authorLI, C-
dc.contributor.authorSHI, J-
dc.contributor.authorGong, X-
dc.contributor.authorKONG, C-
dc.contributor.authorLuo, Z-
dc.contributor.authorSong, L-
dc.contributor.authorWong, KKY-
dc.date.accessioned2019-09-20T08:51:13Z-
dc.date.available2019-09-20T08:51:13Z-
dc.date.issued2018-
dc.identifier.citationOptics Letters, 2018, v. 43 n. 23, p. 5849-5852-
dc.identifier.issn0146-9592-
dc.identifier.urihttp://hdl.handle.net/10722/277445-
dc.description.abstractRecently demonstrated bond-selective photoacoustic (PA) imaging has revealed the importance of 1.7 μm laser sources. In this Letter, we demonstrate a gain-switched thulium-doped fiber laser with continuous tuning from 1690 to 1765 nm by using an electrically driven acousto-optical tunable filter. Micro-joule laser pulses with a shot-to-shot intensity variation of 1.6% and a pulse duration of 150 ns are obtained. The laser source is then harnessed to implement a PA microscopy system, of which the lateral resolution is estimated to be 15.6 μm by scanning the edge of a black tape. The PA spectra of butter, rapeseed oil, and adipose tissue are measured, and they show a consistent absorption peak of around 1720 nm. Photoacoustic microscopy imaging of the adipose tissue demonstrates a high optical absorption contrast of lipids and the superiority of the laser for spectroscopic PA detection.-
dc.languageeng-
dc.publisherOptical Society of America. The Journal's web site is located at http://www.opticsinfobase.org/current.cfm?journal=3-
dc.relation.ispartofOptics Letters-
dc.rightsOptics Letters. Copyright © Optical Society of America.-
dc.rights© XXXX [year] Optical Society of America]. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modifications of the content of this paper are prohibited.-
dc.subjectAbsorption spectroscopy-
dc.subjectFiber lasers-
dc.subjectLight absorption-
dc.subjectTissue-
dc.title1.7  μm wavelength tunable gain-switched fiber laser and its application to spectroscopic photoacoustic imaging-
dc.typeArticle-
dc.identifier.emailWong, KKY: kywong@eee.hku.hk-
dc.identifier.authorityWong, KKY=rp00189-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1364/OL.43.005849-
dc.identifier.pmid30499958-
dc.identifier.scopuseid_2-s2.0-85057477475-
dc.identifier.hkuros305783-
dc.identifier.volume43-
dc.identifier.issue23-
dc.identifier.spage5849-
dc.identifier.epage5852-
dc.publisher.placeUnited States-

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