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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/41403

Title: Observation of optical second harmonic generation from suspended single-layer and bi-layer graphene.
Authors: Kung-Hsuan Lin;Shao-Wei Weng;Po-Wei Lyu;Tsong-Ru Tsai;Wei-Bin Su
Contributors: 國立臺灣海洋大學:光電科學研究所
Date: 2014
Issue Date: 2017-02-15T05:45:23Z
Publisher: Applied Physics Letters
Abstract: Abstract: We have experimentally investigated the optical second harmonic generation (SHG) on suspended single-layer and bi-layer graphene sheets. By shining normally incident 800-nm light with polarization along the sample planes, the SHG intensities of single-layer and bi-layer graphene are found to be comparable to the one of polar GaAs with large second order susceptibility, which is unexpected because both have the centrosymmetric property. Our experimental results reveal that the strong SHG is not due to the defects breaking the symmetry. Instead, we suggest that the SHG signals result from the long-range curvature fluctuations on the suspended single-layer and bi-layer graphene sheets.
Relation: 105
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/41403
Appears in Collections:[光電科學研究所] 期刊論文

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