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Laser & Optoelectronics Progress, Volume. 56, Issue 20, 202410(2019)

Continuous Laser Induced Photoluminescence Enhancement of Au Nanorods

Wenxue Zhang1,2, Xiaorong Zhang1,2, Chengbing Qin1,2、*, and Liantuan Xiao1,2
Author Affiliations
  • 1State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University, Taiyuan, Shanxi 0 30006, China
  • 2Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, Shanxi 0 30006, China
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    Morphological and optical characterizations of Au nanorods. (a) SEM image of NR-40-600; (b) extinction spectra; (c) normalized scattering spectra; (d) photoluminescence spectra

    Fig. 1. Morphological and optical characterizations of Au nanorods. (a) SEM image of NR-40-600; (b) extinction spectra; (c) normalized scattering spectra; (d) photoluminescence spectra

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    Morphological and optical characteristic variations of Au nanorods during laser irradiation. (a) SEM image of NR-40-600 after laser irradiation; (b) typical PL enhancement factors of five kinds of Au nanorods;(c) PL spectrum versus wavelength of NR-40-600; (d) PL peak value versus irradiation duration of NR-40-600

    Fig. 2. Morphological and optical characteristic variations of Au nanorods during laser irradiation. (a) SEM image of NR-40-600 after laser irradiation; (b) typical PL enhancement factors of five kinds of Au nanorods;(c) PL spectrum versus wavelength of NR-40-600; (d) PL peak value versus irradiation duration of NR-40-600

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    Maximum PL enhancement factor Fm and the corresponding irradiation duration Tm of five Au nanorods. (a)(f) NR-40-600; (b)(g) NR-40-650; (c)(h) NR-40-700; (d)(i) NR-10-780; (e)(j) NR-20-780

    Fig. 3. Maximum PL enhancement factor Fm and the corresponding irradiation duration Tm of five Au nanorods. (a)(f) NR-40-600; (b)(g) NR-40-650; (c)(h) NR-40-700; (d)(i) NR-10-780; (e)(j) NR-20-780

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    PL enhancement of Au nanorods under different laser wavelengths. (a) Schematic of Au nanorods energy levels; (b) Fm of NR-40-600 and NR-10-780 under irradiation at different laser wavelengths; (c) Tm of NR-40-600 and NR-10-780 under irradiation at different laser wavelengths (hollow dots are central values of Gauss fittings, color bars denote corresponding standard deviations)

    Fig. 4. PL enhancement of Au nanorods under different laser wavelengths. (a) Schematic of Au nanorods energy levels; (b) Fm of NR-40-600 and NR-10-780 under irradiation at different laser wavelengths; (c) Tm of NR-40-600 and NR-10-780 under irradiation at different laser wavelengths (hollow dots are central values of Gauss fittings, color bars denote corresponding standard deviations)

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    Effect of power density on PL enhancement of Au nanorods. (a) Fm of NR-40-600 under different power densities; (b) Tm of NR-40-600 under different power densities; (c) Fm of NR-10-780 under different power densities; (d) Tm of NR-10-780 under different power densities

    Fig. 5. Effect of power density on PL enhancement of Au nanorods. (a) Fm of NR-40-600 under different power densities; (b) Tm of NR-40-600 under different power densities; (c) Fm of NR-10-780 under different power densities; (d) Tm of NR-10-780 under different power densities

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    • Table 1. Morphological and optical parameters of five kinds of Au nanorods

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      Table 1. Morphological and optical parameters of five kinds of Au nanorods

      Name of nanorodNR-40-600NR-40-650NR-40-700NR-10-780NR-20-780
      Diameter /nm4040401020
      Length /nm6884963975
      AR1.72.12.43.93.8
      SVR0.1140.1120.1110.4290.215
      TSPR /nm521528521525516
      LSPR /nm603664723764800
      SP/nm668657654658652
      PL /nm669632644625605
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    Wenxue Zhang, Xiaorong Zhang, Chengbing Qin, Liantuan Xiao. Continuous Laser Induced Photoluminescence Enhancement of Au Nanorods[J]. Laser & Optoelectronics Progress, 2019, 56(20): 202410

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    Paper Information

    Category: Optics at Surfaces

    Received: May. 21, 2019

    Accepted: Jul. 2, 2019

    Published Online: Aug. 30, 2019

    The Author Email: Chengbing Qin (chbqin@sxu.edu.cn)

    DOI:10.3788/LOP56.202410

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology