Spectral shape of one-photon luminescence from single gold nanorods

Te Wen; Yingbo He; Xue-Lu Liu; Miao-Ling Lin; Yuqing Cheng; Jingyi Zhao; Qihuang Gong; Keyu Xia; Ping-Heng Tan; Guowei Lu

doi:10.1117/12.2500439

25 October 2018 Spectral shape of one-photon luminescence from single gold nanorods

Te Wen, Yingbo He, Xue-Lu Liu, Miao-Ling Lin, Yuqing Cheng, Jingyi Zhao, Qihuang Gong, Keyu Xia, Ping-Heng Tan, Guowei Lu

Author Affiliations +

Proceedings Volume 10824, Plasmonics III; 1082410 (2018) https://doi.org/10.1117/12.2500439
Event: SPIE/COS Photonics Asia, 2018, Beijing, China

Abstract

Light emission from single gold nanorods excited by continuous wave lasers was investigated by using ultra-narrow-band notch filters to obtain their complete spectral shape. The spectral profile of Stokes emission can be fitted by a Lorentzian line shape and that is dominated by localized surface plasmon resonance. Moreover, a clear anti-Stokes emission band can be always observed under different excitation wavelengths. The spectral shape of anti-Stokes emission can be fitted well with a Fermi-Dirac like line shape. Electron Fermi-Dirac distribution should influence the spectral shape of anti-Stokes emission for both interband and intraband transitions. It was also found that the intensity of anti-Stokes emission increases more rapidly in comparison with that of Stokes emission as illumination power increases on resonant excitation. This phenomenon can be understood as the temperature dependent of the electron Fermi-Dirac distribution due to photothermal effect.

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Te Wen, Yingbo He, Xue-Lu Liu, Miao-Ling Lin, Yuqing Cheng, Jingyi Zhao, Qihuang Gong, Keyu Xia, Ping-Heng Tan, and Guowei Lu "Spectral shape of one-photon luminescence from single gold nanorods", Proc. SPIE 10824, Plasmonics III, 1082410 (25 October 2018); https://doi.org/10.1117/12.2500439

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