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dc.contributor.authorMinwan Jung-
dc.contributor.authorJunsu Lee-
dc.contributor.author박준-
dc.contributor.authorJoonhoi Koo-
dc.contributor.author전영민-
dc.contributor.authorJu Han Lee-
dc.date.accessioned2015-12-03T02:04:59Z-
dc.date.available2015-12-03T02:04:59Z-
dc.date.issued201507-
dc.identifier.citationVOL 23, NO 15, 19996-20006-
dc.identifier.issn10944087-
dc.identifier.other44737-
dc.identifier.urihttp://pubs.kist.re.kr/handle/201004/50120-
dc.description.abstractWe demonstrate the use of an all-fiberized, mode-locked 1.94 μm laser with a saturable absorption device based on a tungsten disulfide (WS2)-deposited side-polished fiber. The WS2 particles were prepared via liquid phase exfoliation (LPE) without centrifugation. A series of measurements including Raman spectroscopy, scanning electron microscopy (SEM), and atomic force microscopy (AFM) revealed that the prepared particles had thick nanostructures of more than 5 layers. The prepared saturable absorption device used the evanescent field interaction mechanism between the oscillating beam and WS2 particles and its modulation depth was measured to be ~10.9% at a wavelength of 1925 nm. Incorporating the WS2-based saturable absorption device into a thuliumholmium co-doped fiber ring cavity, stable mode-locked pulses with a temporal width of ~1.3 ps at a repetition rate of 34.8 MHz were readily obtained at a wavelength of 1941 nm. The results of this experiment confirm that WS2 can be used as an effective broadband saturable absorption material that is suitable to passively generate pulses at 2 μm wavelengths.-
dc.publisherOptics express-
dc.subjectmode-locked-
dc.subjectws2-
dc.subjectfiber laser-
dc.subject1.94 um-
dc.titleMode-locked, 1.94-μm, all-fiberized laser using WS2-based evanescent field interaction-
dc.typeArticle-
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