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

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Yuan, Qingchen
dc.contributor.author Fang, Liang
dc.contributor.author Yang, He
dc.contributor.author Gan, Xuetao
dc.contributor.author Khayrudinov, Vladislav
dc.contributor.author Lipsanen, Harri
dc.contributor.author Sun, Zhipei
dc.contributor.author Zhao, Jianlin
dc.date.accessioned 2018-08-23T10:58:58Z
dc.date.available 2018-08-23T10:58:58Z
dc.date.issued 2018-10
dc.identifier.citation Yuan , 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.201800126 en
dc.identifier.issn 1863-8880
dc.identifier.issn 1863-8899
dc.identifier.other PURE UUID: e090f911-4347-4cce-989b-ac61c01d6ce8
dc.identifier.other PURE ITEMURL: https://research.aalto.fi/en/publications/lowpower-continuouswave-second-harmonic-generation-in-semiconductor-nanowires(e090f911-4347-4cce-989b-ac61c01d6ce8).html
dc.identifier.other PURE LINK: https://onlinelibrary.wiley.com/doi/10.1002/lpor.201800126
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/33593
dc.description | openaire: EC/H2020/631610/EU//GrabFast
dc.description.abstract Semiconductor 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.language.iso en en
dc.relation info:eu-repo/grantAgreement/EC/H2020/631610/EU//GrabFast
dc.relation.ispartofseries LASER AND PHOTONICS REVIEWS en
dc.rights restrictedAccess en
dc.title Low‐Power Continuous‐Wave Second Harmonic Generation in Semiconductor Nanowires en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Northwestern Polytechnical University Xian
dc.contributor.department Department of Electronics and Nanoengineering
dc.contributor.department Centre of Excellence in Quantum Technology, QTF
dc.subject.keyword nanowire
dc.subject.keyword laser
dc.subject.keyword SHG
dc.identifier.urn URN:NBN:fi:aalto-201808234725
dc.identifier.doi 10.1002/lpor.201800126

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