Publication:
Femtosecond laser written diamond waveguide excitation of the whispering gallery modes in a silicon microsphere

dc.contributor.coauthorRampini, Stefano
dc.contributor.coauthorSotillo, Belen
dc.contributor.coauthorBharadwaj, Vibhav
dc.contributor.coauthorRamponi, Roberta
dc.contributor.coauthorEaton, Shane Michael
dc.contributor.departmentDepartment of Physics
dc.contributor.departmentGraduate School of Sciences and Engineering
dc.contributor.kuauthorÇirkinoğlu, Hüseyin Ozan
dc.contributor.kuauthorSerpengüzel, Ali
dc.contributor.schoolcollegeinstituteCollege of Sciences
dc.contributor.schoolcollegeinstituteGRADUATE SCHOOL OF SCIENCES AND ENGINEERING
dc.date.accessioned2024-11-09T23:27:26Z
dc.date.issued2019
dc.description.abstractWe demonstrate light coupling from femtosecond laser written diamond waveguide operating at the telecommunication wavelengths to a silicon microsphere resonator. Type II waveguides are written on a diamond platform and Fahry-Perot resonances are excited in the diamond waveguides by bare fiber coupling in and out of the waveguide. The Fabry-Perot resonances have a free spectral range of 87 pm, and a maximum Q-factor of 3.9 x 10(4). The diamond waveguide is used to excite TM-polarized whispering gallery modes of the 1 mm silicon microsphere, since the type II waveguides support TM modes better as compared to TE modes. The whispering gallery mode spacing is measured as 0.257 nm and the highest Q-factor is 6.2 x 10(4). This evanescent coupling method to high Q-factor silicon microsphere resonances by femtosecond laser written diamond waveguides can be further used for filtering and sensing applications in various photonic lightwave circuits.
dc.description.indexedbyWOS
dc.description.indexedbyScopus
dc.description.openaccessNO
dc.description.publisherscopeInternational
dc.description.sponsoredbyTubitakEuN/A
dc.description.sponsorshipTurkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK) [114F312]
dc.description.sponsorshipCONCERT-Japan DiamondFab Project, European Commission (EC) [FP7-INCO-266604] This work was supported by Turkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK) [grant number 114F312] and CONCERT-Japan DiamondFab Project, European Commission (EC) [grant number FP7-INCO-266604].
dc.description.volume92
dc.identifier.doi10.1016/j.optmat.2019.01.005
dc.identifier.eissn1873-1252
dc.identifier.issn0925-3467
dc.identifier.quartileQ2
dc.identifier.scopus2-s2.0-85065657667
dc.identifier.urihttps://doi.org/10.1016/j.optmat.2019.01.005
dc.identifier.urihttps://hdl.handle.net/20.500.14288/11716
dc.identifier.wos470938900057
dc.keywordsWhispering gallery modes
dc.keywordsMicrocavities
dc.keywordsOptical resonators
dc.keywordsDiamond machining
dc.keywordsWaveguides
dc.keywordsResonance
dc.keywordsLaser materials processing ring resonators
dc.keywordsResonances
dc.keywordsGlass
dc.keywordsMicroresonators
dc.keywordsScattering
dc.keywordsPolymers
dc.language.isoeng
dc.publisherElsevier
dc.relation.ispartofOptical Materials
dc.subjectMaterials science
dc.subjectOptics
dc.titleFemtosecond laser written diamond waveguide excitation of the whispering gallery modes in a silicon microsphere
dc.typeJournal Article
dspace.entity.typePublication
local.contributor.kuauthorÇirkinoğlu, Hüseyin Ozan
local.contributor.kuauthorHüseyin Ozan
local.contributor.kuauthorBayer
local.contributor.kuauthorMustafa Mert
local.contributor.kuauthorSerpengüzel, Ali
local.publication.orgunit1GRADUATE SCHOOL OF SCIENCES AND ENGINEERING
local.publication.orgunit1College of Sciences
local.publication.orgunit2Department of Physics
local.publication.orgunit2Graduate School of Sciences and Engineering
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