Passively Q-switched femtosecond-laser-written thulium waveguide laser based on evanescent field interaction with carbon nanotubes

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dc.contributor.authorKifle, Esromko
dc.contributor.authorLoiko, Pavelko
dc.contributor.authorVazquez de Aldana, Javier Rodriguezko
dc.contributor.authorRomero, Carolinako
dc.contributor.authorRodenas, Airanko
dc.contributor.authorChoi, Sun Yungko
dc.contributor.authorBae, Ji Eunko
dc.contributor.authorRotermund, Fabianko
dc.contributor.authorZakharov, Viktorko
dc.contributor.authorVeniaminov, Andreyko
dc.contributor.authorAguilo, Magdalenako
dc.contributor.authorDiaz, Francescko
dc.contributor.authorGriebner, Uweko
dc.contributor.authorPetrov, Valentinko
dc.contributor.authorMateos, Xavierko
dc.date.accessioned2019-04-15T14:34:16Z-
dc.date.available2019-04-15T14:34:16Z-
dc.date.created2018-10-15-
dc.date.issued2018-10-
dc.identifier.citationPHOTONICS RESEARCH, v.6, no.10, pp.971 - 980-
dc.identifier.issn2327-9125-
dc.identifier.urihttp://hdl.handle.net/10203/254180-
dc.description.abstractSurface channel waveguides (WGs) were fabricated in a monoclinic Tm3+:KLu(WO4)(2) crystal by femtosecond direct laser writing (fs-DLW). The WGs consisted of a half-ring cladding with diameters of 50 and 60 mu m located just beneath the crystal surface. They were characterized by confocal laser microscopy and mu-Raman spectroscopy, indicating a reduced crystallinity and stress-induced birefringence of the WG cladding. In continuous-wave (CW) mode, under Ti:sapphire laser pumping at 802 nm, the maximum output power reached 171.1 mW at 1847.4 nm, corresponding to a slope efficiency eta of 37.8% for the 60 mu m diameter WG. The WG propagation loss was 0.7 +/- 0.3 dB/cm. The top surface of the WGs was spin-coated by a polymethyl methacrylate film containing randomly oriented (spaghetti-like) arc-discharge single-walled carbon nanotubes serving as a saturable absorber based on evanescent field coupling. Stable passively Q-switched (PQS) operation was achieved. The PQS 60 mu m diameter WG laser generated a record output power of 150 mW at 1846.8 nm with eta = 34.6%. The conversion efficiency with respect to the CW mode was 87.6%. The best pulse characteristics (energy/duration) were 105.6 nJ/98 ns at a repetition rate of 1.42 MHz. (C)( )2018 Chinese Laser Press-
dc.languageEnglish-
dc.publisherOPTICAL SOC AMER-
dc.subject1.9 MU-M-
dc.subjectSATURABLE ABSORBER-
dc.subjectMODE-LOCKING-
dc.subjectSLOPE EFFICIENCY-
dc.subjectFIBER LASER-
dc.subjectCHIP LASERS-
dc.subjectGLASS-
dc.subjectMOS2-
dc.subjectYAG-
dc.subjectYB-
dc.titlePassively Q-switched femtosecond-laser-written thulium waveguide laser based on evanescent field interaction with carbon nanotubes-
dc.typeArticle-
dc.identifier.wosid000446105700014-
dc.identifier.scopusid2-s2.0-85055482465-
dc.type.rimsART-
dc.citation.volume6-
dc.citation.issue10-
dc.citation.beginningpage971-
dc.citation.endingpage980-
dc.citation.publicationnamePHOTONICS RESEARCH-
dc.identifier.doi10.1364/PRJ.6.000971-
dc.contributor.localauthorRotermund, Fabian-
dc.contributor.nonIdAuthorKifle, Esrom-
dc.contributor.nonIdAuthorLoiko, Pavel-
dc.contributor.nonIdAuthorVazquez de Aldana, Javier Rodriguez-
dc.contributor.nonIdAuthorRomero, Carolina-
dc.contributor.nonIdAuthorRodenas, Airan-
dc.contributor.nonIdAuthorChoi, Sun Yung-
dc.contributor.nonIdAuthorZakharov, Viktor-
dc.contributor.nonIdAuthorVeniaminov, Andrey-
dc.contributor.nonIdAuthorAguilo, Magdalena-
dc.contributor.nonIdAuthorDiaz, Francesc-
dc.contributor.nonIdAuthorGriebner, Uwe-
dc.contributor.nonIdAuthorPetrov, Valentin-
dc.contributor.nonIdAuthorMateos, Xavier-
dc.description.isOpenAccessN-
dc.type.journalArticleArticle-
dc.subject.keywordPlus1.9 MU-M-
dc.subject.keywordPlusSATURABLE ABSORBER-
dc.subject.keywordPlusMODE-LOCKING-
dc.subject.keywordPlusSLOPE EFFICIENCY-
dc.subject.keywordPlusFIBER LASER-
dc.subject.keywordPlusCHIP LASERS-
dc.subject.keywordPlusGLASS-
dc.subject.keywordPlusMOS2-
dc.subject.keywordPlusYAG-
dc.subject.keywordPlusYB-
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