Low‐Power Continuous‐Wave Second Harmonic Generation in Semiconductor Nanowires

dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorYuan, Qingchenen_US
dc.contributor.authorFang, Liangen_US
dc.contributor.authorYang, Heen_US
dc.contributor.authorGan, Xuetaoen_US
dc.contributor.authorKhayrudinov, Vladislaven_US
dc.contributor.authorLipsanen, Harrien_US
dc.contributor.authorSun, Zhipeien_US
dc.contributor.authorZhao, Jianlinen_US
dc.contributor.departmentNorthwestern Polytechnical Universityen_US
dc.contributor.departmentDepartment of Electronics and Nanoengineeringen_US
dc.contributor.departmentCentre of Excellence in Quantum Technology, QTFen_US
dc.date.accessioned2018-08-23T10:58:58Z
dc.date.available2018-08-23T10:58:58Z
dc.date.issued2018-10en_US
dc.description| openaire: EC/H2020/631610/EU//GrabFast
dc.description.abstractSemiconductor nanowires (NWs) are promising for realizing various on‐chip nonlinear optical devices, due to their nanoscale lateral confinement and strong light–matter interaction. However, high‐intensity pulsed pump lasers are typically needed to exploit their optical nonlinearity because light couples poorly with nanometric‐size wires. Here, microwatts continuous‐wave light pumped second harmonic generation (SHG) in AlGaAs NWs is demonstrated by integrating them with silicon planar photonic crystal cavities. Light–NW coupling is enhanced effectively by the extremely localized cavity mode at the subwavelength scale. Strong SHG is obtained even with a continuous‐wave laser excitation with a pump power down to urn:x-wiley:18638880:media:lpor201800126:lpor201800126-math-0001W, and the cavity‐enhancement factor is estimated around 150. Additionally, in the integrated device, the NW's SHG is more than two orders of magnitude stronger than third harmonic generations in the silicon slab, though the NW only couples with less than 1% of the cavity mode. This significantly reduced power requirement of NW's nonlinear frequency conversion would promote NW‐based building blocks for nonlinear optics, especially in chip‐integrated coherent light sources, entangled photon pairs and signal processing devices.en
dc.description.versionPeer revieweden
dc.identifier.citationYuan , Q , Fang , L , Yang , H , Gan , X , Khayrudinov , V , Lipsanen , H , Sun , Z & Zhao , J 2018 , ' Low‐Power Continuous‐Wave Second Harmonic Generation in Semiconductor Nanowires ' , LASER AND PHOTONICS REVIEWS , vol. 12 , no. 10 , 1800126 . https://doi.org/10.1002/lpor.201800126en
dc.identifier.doi10.1002/lpor.201800126en_US
dc.identifier.issn1863-8880
dc.identifier.issn1863-8899
dc.identifier.otherPURE UUID: e090f911-4347-4cce-989b-ac61c01d6ce8en_US
dc.identifier.otherPURE ITEMURL: https://research.aalto.fi/en/publications/e090f911-4347-4cce-989b-ac61c01d6ce8en_US
dc.identifier.otherPURE LINK: https://onlinelibrary.wiley.com/doi/10.1002/lpor.201800126en_US
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/33593
dc.identifier.urnURN:NBN:fi:aalto-201808234725
dc.language.isoenen
dc.relationinfo:eu-repo/grantAgreement/EC/H2020/631610/EU//GrabFasten_US
dc.relation.ispartofseriesLASER AND PHOTONICS REVIEWSen
dc.rightsrestrictedAccessen
dc.subject.keywordnanowireen_US
dc.subject.keywordlaseren_US
dc.subject.keywordSHGen_US
dc.titleLow‐Power Continuous‐Wave Second Harmonic Generation in Semiconductor Nanowiresen
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi
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