Laser & Optoelectronics Progress, Volume. 56, Issue 3, 033003(2019)

Spectroscopic Modulation of Coherent Lattice Vibrations in One-Dimensional Single-Walled Carbon Nanotubes

Xin Zhao1, Zhaogang Nie1、*, Fangteng Zhang1, Lin Ma1, Deqiang Guo1, Weiren Zhao1, Huawei Xu2, and Kobayashi Takayoshi3,4
Author Affiliations
  • 1 School of Physics & Optoelectronic Engineering, Guangdong University of Technology, Guangzhou, Guangdong 510006, China;
  • 2 The Fifth Institute of Electronics, Ministry of Industry and Information Technology, Guangzhou, Guangdong 510507, China
  • 3 Advanced Ultrafast Laser Research Center, University of Electro-Communications, 1-5-1 Chofugaoka, Chofu, Tokyo 182- 8585, Japan
  • 4 Department of Electrophysics, National Chiao Tung University, Hsinchu, Taiwan 30010, China
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    A 3.7 fs pulsed laser is used to selectively pump the two lowest electronic transitions of semiconducting single-walled carbon nanotubes, which induces a low-frequency oscillation radial breathing mode (RBM) and a high-frequency oscillation axis stretching mode (GM) along the carbon tubes. By changing the pump bandwidth, the pump effects of the lowest single-excited-state and dual-excited-state on the amplitudes and initial phases of the two vibrational modes are detected. The research result indicates that the amplitudes of RBM and GM, as well as the initial phase of GM, are obviously modulated. With the influence of coherent electro-phonon coupling on phonon field, the parameters of the vibrational modes of the carbon nanotubes lattice structure are modulated. This provides a possibility to regulate the coherent lattice vibration properties by inducing the electronic coherent motion.

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    Xin Zhao, Zhaogang Nie, Fangteng Zhang, Lin Ma, Deqiang Guo, Weiren Zhao, Huawei Xu, Kobayashi Takayoshi. Spectroscopic Modulation of Coherent Lattice Vibrations in One-Dimensional Single-Walled Carbon Nanotubes[J]. Laser & Optoelectronics Progress, 2019, 56(3): 033003

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    Paper Information

    Category: Spectroscopy

    Received: Jul. 23, 2018

    Accepted: Aug. 13, 2018

    Published Online: Jul. 31, 2019

    The Author Email: Nie Zhaogang (zgnie@gdut.edu.cn)

    DOI:10.3788/LOP56.033003

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