Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/157737
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dc.contributor.authorLi, Huizien_US
dc.contributor.authorGoel, Charuen_US
dc.contributor.authorZang, Jichaoen_US
dc.contributor.authorRaghuraman, Sidharthanen_US
dc.contributor.authorChen, Shaoxiangen_US
dc.contributor.authorMuhammad Rosdi Abu Hassanen_US
dc.contributor.authorChang, Wonkeunen_US
dc.contributor.authorYoo, Seongwooen_US
dc.date.accessioned2022-05-12T03:01:11Z-
dc.date.available2022-05-12T03:01:11Z-
dc.date.issued2022-
dc.identifier.citationLi, H., Goel, C., Zang, J., Raghuraman, S., Chen, S., Muhammad Rosdi Abu Hassan, Chang, W. & Yoo, S. (2022). Integration of an anti-resonant hollow-core fiber with a multimode Yb-doped fiber for high power near-diffraction-limited laser operation. Optics Express, 30(5), 7928-7937. https://dx.doi.org/10.1364/OE.451033en_US
dc.identifier.issn1094-4087en_US
dc.identifier.urihttps://hdl.handle.net/10356/157737-
dc.description.abstractWe proposed and demonstrated mode cleaning in a high-power fiber laser by integrating an anti-resonant hollow-core fiber (AR-HCF) into a multimode laser cavity of an ytterbium (Yb)-doped fiber (YDF). An in-house mode-matched AR-HCF was fusion-spliced to a commercial multimode LMA-YDF, ensuring efficient fundamental mode coupling. The AR-HCF inflicts a high propagation loss selectively on higher-order modes, facilitating fundamental mode operation. Thus, the AR-HCF works as an efficient spatial mode filter embedded in the multimode fiber laser cavity and reinforces preferential amplification of the fundamental mode. Beam quality factor enhancement was achieved from M2 = 2.09 to 1.39 at an output power of 57.7 W (pump-power limited). The beam quality can be further improved by refining the AR-HCF fabrication. The proposed technique has a great potential to be exploited in other multimode fiber laser cavities involving erbium- or thulium-doped fibers and obviates the need for complicated specialty active fiber designs. Compared with the commonly used fiber bending technique, our method can achieve an efficient higher-order mode suppression without inducing mode-field deterioration.en_US
dc.description.sponsorshipNational Research Foundation (NRF)en_US
dc.language.isoenen_US
dc.relationQEP-P4en_US
dc.relation.ispartofOptics Expressen_US
dc.rights© 2022 Optica Publishing Group under the terms of the OSA Open Access Publishing Agreement. Users may use, reuse, and build upon the article, or use the article for text or data mining, so long as such uses are for noncommercial purposes and appropriate attribution is maintained. All other rights are reserved.en_US
dc.subjectEngineering::Electrical and electronic engineeringen_US
dc.titleIntegration of an anti-resonant hollow-core fiber with a multimode Yb-doped fiber for high power near-diffraction-limited laser operationen_US
dc.typeJournal Articleen
dc.contributor.schoolSchool of Electrical and Electronic Engineeringen_US
dc.contributor.researchThe Photonics Instituteen_US
dc.contributor.researchCNRS International NTU THALES Research Alliancesen_US
dc.identifier.doi10.1364/OE.451033-
dc.description.versionPublished versionen_US
dc.identifier.pmid30-
dc.identifier.scopus2-s2.0-85125491335-
dc.identifier.issue5en_US
dc.identifier.volume30en_US
dc.identifier.spage7928en_US
dc.identifier.epage7937en_US
dc.subject.keywordsFiber Lasersen_US
dc.subject.keywordsAntiresonanten_US
dc.description.acknowledgementNational Research Foundation Singapore (QEP-P4).en_US
item.grantfulltextopen-
item.fulltextWith Fulltext-
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