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Advanced Materials

Wavelength Tunable CdSe Nanowire Lasers Based on the Absorption-Emission-Absorption Process

Authors

  • Jiabei Li,

    1. State Key Laboratory of Modern Optical Instrumentation, Department of Optical Engineering, Zhejiang University, Hangzhou 310027, P.R. China
    Current affiliation:
    1. These authors contributed equally in this work.
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  • Chao Meng,

    1. State Key Laboratory of Modern Optical Instrumentation, Department of Optical Engineering, Zhejiang University, Hangzhou 310027, P.R. China
    Current affiliation:
    1. These authors contributed equally in this work.
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  • Ying Liu,

    1. School of Material Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia, 30332-0245, United States
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  • Xiaoqin Wu,

    1. State Key Laboratory of Modern Optical Instrumentation, Department of Optical Engineering, Zhejiang University, Hangzhou 310027, P.R. China
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  • Yize Lu,

    1. State Key Laboratory of Modern Optical Instrumentation, Department of Optical Engineering, Zhejiang University, Hangzhou 310027, P.R. China
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  • Yu Ye,

    1. State Key Laboratory for Mesoscopic Physics and Department of Physics, Peking University, Beijing 100871, P.R. China
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  • Lun Dai,

    1. State Key Laboratory for Mesoscopic Physics and Department of Physics, Peking University, Beijing 100871, P.R. China
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  • Limin Tong,

    1. State Key Laboratory of Modern Optical Instrumentation, Department of Optical Engineering, Zhejiang University, Hangzhou 310027, P.R. China
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  • Xu Liu,

    1. State Key Laboratory of Modern Optical Instrumentation, Department of Optical Engineering, Zhejiang University, Hangzhou 310027, P.R. China
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  • Qing Yang

    Corresponding author
    1. State Key Laboratory of Modern Optical Instrumentation, Department of Optical Engineering, Zhejiang University, Hangzhou 310027, P.R. China
    • State Key Laboratory of Modern Optical Instrumentation, Department of Optical Engineering, Zhejiang University, Hangzhou 310027, P.R. China.
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Abstract

Wavelength tunability of lasers is one of the most important parameters for achieving practical applications such as optical communication, environmental monitoring, and spectroscopy analysis. A wide-wavelength tunable laser is demonstrated on a single non-doped CdSe nanowire (NW) without changing pumping intensity and position, but by simply gradually cutting the NW shorter instead. The corresponding mechanism for the large wavelength shifts is determined as the absorption-emission-absorption (AEA) process in polar CdSe NWs.

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