4.8 Article

Anisotropically Enhanced Nonlinear Optical Properties of Ensembles of Gold Nanorods Electrospun in Polymer Nanofiber Film

期刊

ACS APPLIED MATERIALS & INTERFACES
卷 8, 期 3, 页码 2048-2053

出版社

AMER CHEMICAL SOC
DOI: 10.1021/acsami.5b10411

关键词

anisotropic optical properties; gold nanorods; surface plasmon resonance; electron-phonon coupling

资金

  1. National Natural Science Foundation of China [11404114, 51302087, 51132004]
  2. China Postdoctoral Science Foundation [2015T80903]
  3. Guangdong Natural Science Foundation [S2011030001349]
  4. State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics

向作者/读者索取更多资源

Polymeric nanofibers containing gold nanorods (GNRs) are aligned in a uniform orientation through electrospinning. The dispersive and absorptive parts of the third-order optical nonlinear optical refractive index of the composite film measured by polarization dependent z-scan method are demonstrated to be anisotropically enhanced. Anisotropic optical response of the aligned GNRs and its connection with the ultrafast electron dynamics are discussed in light of the results of resonant femtosecond pump probe experiments. The significant appearance of anisotropic nonlinear optical properties of ensembles of GNRs is attributed to the sensitive excitation of longitudinal surface plasmon resonance (LSPR) of highly aligned GNRs. For the macroscopic applications of ensembles of GNRs, such as passive mode-locking and all-optical switching, the experimental results demonstrate that the alignment of GNRs through electrospinning should be very high efficient, and economic.

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