Optical trapping of microparticles and yeast cells at ultra-low intensity by intracavity nonlinear feedback forces

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buir.contributor.authorMakey, Ghaith
buir.contributor.authorİlday, Fatih Ömer
dc.citation.epage1146309-9en_US
dc.citation.spage1146309-1en_US
dc.citation.volumeNumber11463en_US
dc.contributor.authorKalantarifard, A.
dc.contributor.authorElahi, P.
dc.contributor.authorMakey, Ghaith
dc.contributor.authorÜnlü, B.
dc.contributor.authorMarago, O. M.
dc.contributor.authorİlday, Fatih Ömer
dc.contributor.authorVolpe, G.
dc.contributor.editorDholakia, K.
dc.contributor.editorSpalding, G. C.
dc.coverage.spatialCalifornia, United Statesen_US
dc.date.accessioned2021-03-04T08:22:17Z
dc.date.available2021-03-04T08:22:17Z
dc.date.issued2020
dc.departmentDepartment of Electrical and Electronics Engineeringen_US
dc.departmentDepartment of Physicsen_US
dc.departmentInstitute of Materials Science and Nanotechnology (UNAM)en_US
dc.departmentNanotechnology Research Center (NANOTAM)en_US
dc.descriptionDate of Conference: 24 August-4 September 2020en_US
dc.descriptionConference Name: SPIE NanoScience Engineering, 2020: Optical Trapping and Optical Micromanipulation XVII 2020en_US
dc.description.abstractIn standard optical tweezers optical forces arise from the interaction of a tightly focused laser beam with a microscopic particle. The particle is always outside the laser cavity and the incoming beam is not affected by the particle position. Here we describe an optical trapping scheme inside the cavity of a fiber laser where the laser operation is nonlinearly influenced by the displacement of trapped particle and there is a coupling between laser operation to the motion of the trapped particle and this can dramatically enhances optical tweezers action and gives rise to nonlinear feedback forces. This scheme operates using an aspheric lens at low numerical aperture (NA=0.125), NIR wavelength (λ = 1030 nm), and very low average power which results in about two orders of magnitude reduction in exposure to laser intensity compared to standard optical tweezers. Ultra-low intensity at our wavelength can grant a safe, temperature-controlled environment, away from surfaces for microfuidics manipulation of biosamples that are sensitive to light intensity. As the main advantage of our approach and highly relevant application, we observed that we can trap single yeast cells at a very low power, corresponding to an intensity of 0.036 mW μm-2, that is more than a tenfold less intensity than standard techniques reported in the literature.en_US
dc.description.provenanceSubmitted by Zeynep Aykut (zeynepay@bilkent.edu.tr) on 2021-03-04T08:22:17Z No. of bitstreams: 1 Optical_trapping_of_microparticles_and_yeast_cells_at_ultra_low_intensity_by_intracavity_nonlinear_feedback_forces.pdf: 13008710 bytes, checksum: 29d8bb75c31e6472cd56b74c9413db63 (MD5)en
dc.description.provenanceMade available in DSpace on 2021-03-04T08:22:17Z (GMT). No. of bitstreams: 1 Optical_trapping_of_microparticles_and_yeast_cells_at_ultra_low_intensity_by_intracavity_nonlinear_feedback_forces.pdf: 13008710 bytes, checksum: 29d8bb75c31e6472cd56b74c9413db63 (MD5) Previous issue date: 2020en
dc.identifier.doi10.1117/12.2568420en_US
dc.identifier.isbn9781510637320
dc.identifier.issn0277-786X
dc.identifier.urihttp://hdl.handle.net/11693/75769
dc.language.isoEnglishen_US
dc.publisherSPIEen_US
dc.relation.isversionofhttps://dx.doi.org/10.1117/12.2568420en_US
dc.source.titleProceedings of SPIE - The International Society for Optical Engineeringen_US
dc.subjectOptical tweezersen_US
dc.subjectOptical trappingen_US
dc.subjectIntracavity optical trappingen_US
dc.subjectFiber laseren_US
dc.titleOptical trapping of microparticles and yeast cells at ultra-low intensity by intracavity nonlinear feedback forcesen_US
dc.typeConference Paperen_US

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