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dc.contributor.authorTülek, Abdullahen_US
dc.contributor.authorVardeny, Z. V.en_US
dc.coverage.spatialAthens, Greeceen_US
dc.date.accessioned2016-02-08T11:37:52Z
dc.date.available2016-02-08T11:37:52Z
dc.date.issued2008en_US
dc.identifier.urihttp://hdl.handle.net/11693/26860
dc.descriptionDate of Conference: 22-26 June 2008en_US
dc.descriptionConference Name: 10th Anniversary International Conference on Transparent Optical Networks, ICTON 2008en_US
dc.description.abstractUnidirectional laser emission was observed from φ-conjugated polymer microcavities with spiral geometry, and from microdisks containing line defects. For both type of cavities directionality contrast of the laser emission was found to be ̃ 10, with far-field lateral divergence angle of ̃ 15°. No significant increase in the laser threshold intensity was observed compared with simple microdisk cavities. In addition we also studied the emission spectra of microring polymer lasers fabricated on nylon microfibers upon application of uniaxial stress with strain up to ̃ 12%. Substantial change in the laser emission spectrum was observed when stress was applied; showing enhanced optical sensitivity to stress larger than the changes induced in the emission spectrum caused by the microfiber diameter change. We explain the enhanced sensitivity to stress as due to the induced change in the polymer refractive index dispersion, in particular at the laser emission wavelength (̃ 635 nm).en_US
dc.language.isoEnglishen_US
dc.source.titleProceedings of the 10th Anniversary International Conference on Transparent Optical Networks, ICTON 2008en_US
dc.relation.isversionofhttp://dx.doi.org/10.1109/ICTON.2008.4598736en_US
dc.subjectπ-Conjugated polymersen_US
dc.subjectOptical designen_US
dc.subjectOptical materialsen_US
dc.subjectOptical propertiesen_US
dc.subjectOrganic polymersen_US
dc.subjectPhotoresistsen_US
dc.subjectPolymersen_US
dc.subjectRefractive indexen_US
dc.subjectVideodisksen_US
dc.subjectDirectional emissionen_US
dc.subjectDivergence anglesen_US
dc.subjectEmission spectrumsen_US
dc.subjectEnhanced sensitivityen_US
dc.subjectFar fieldsen_US
dc.subjectLaser actionen_US
dc.subjectLaser actionsen_US
dc.subjectLaser emission spectrumen_US
dc.subjectLaser emissionsen_US
dc.subjectLaser thresholdsen_US
dc.subjectLine defectsen_US
dc.subjectMicro ringsen_US
dc.subjectMicro-disksen_US
dc.subjectMicro-fibersen_US
dc.subjectMicrocavityen_US
dc.subjectMicrodisk cavitiesen_US
dc.subjectOptical sensitivityen_US
dc.subjectPolymer lasersen_US
dc.subjectRefractive index dispersionen_US
dc.subjectSpiral geometriesen_US
dc.subjectTransparent optical networksen_US
dc.subjectUniaxial stressen_US
dc.subjectWhispering gallery modesen_US
dc.titleLaser action studies of π-conjugated polymer microcavitiesen_US
dc.typeConference Paperen_US
dc.departmentDepartment of Physicsen_US
dc.citation.spage69en_US
dc.citation.epage72en_US
dc.identifier.doi10.1109/ICTON.2008.4598736en_US
dc.publisherIEEEen_US


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