Magnetic-field tuning of whispering gallery mode lasing from ferromagnetic nematic liquid crystal microdroplets

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dc.contributor.authorMur, M.
dc.contributor.authorSofi, J.A.
dc.contributor.authorKvasi?, I.
dc.contributor.authorMertelj, A.
dc.contributor.authorLisjak, D.
dc.contributor.authorNiranjan, V.
dc.contributor.authorMus?evic?, I.
dc.contributor.authorDhara, S.
dc.date.accessioned2026-02-05T09:32:33Z
dc.date.issued2017
dc.description.abstractWe report magnetic field tuning of the structure and Whispering Gallery Mode lasing from ferromagnetic nematic liquid crystal micro-droplets. Microlasers were prepared by dispersing a nematic liquid crystal, containing magnetic nanoparticles and fluorescent dye, in a glycerol-lecithin matrix. The droplets exhibit radial director structure, which shows elastic distortion at a very low external magnetic field. The fluorescent dye doped ferromagnetic nematic droplets show Whispering Gallery Mode lasing, which is tunable by the external magnetic field. The tuning of the WGM lasing modes is linear in magnetic field with a wavelength-shift of the order of 1 nm/100 mT. Depending on the lasing geometry, the WGMs are red- or blue-shifted. © 2017 Optical Society of America.
dc.identifier.citationOptics Express, 2017, 25, 2, pp. 1073-1083
dc.identifier.issn10944087
dc.identifier.urihttps://doi.org/10.1364/OE.25.001073
dc.identifier.urihttps://idr.nitk.ac.in/handle/123456789/25706
dc.publisherOSA - The Optical Society info@osa.org
dc.subjectCrystal structure
dc.subjectDrops
dc.subjectFerromagnetic materials
dc.subjectFerromagnetism
dc.subjectFluorescence
dc.subjectMagnetic fields
dc.subjectNanomagnetics
dc.subjectNanoparticles
dc.subjectNematic liquid crystals
dc.subjectOptical resonators
dc.subjectDirector structure
dc.subjectElastic distortion
dc.subjectExternal magnetic field
dc.subjectFluorescent dyes
dc.subjectMagnetic nano-particles
dc.subjectNematic droplets
dc.subjectWavelength shift
dc.subjectWhispering-gallery-mode lasing
dc.subjectWhispering gallery modes
dc.titleMagnetic-field tuning of whispering gallery mode lasing from ferromagnetic nematic liquid crystal microdroplets

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