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Title: Near-resonant second-order nonlinear susceptibility in c-axis oriented ZnO nanorods

Near-resonant second-harmonic generation (SHG) in c-axis oriented ZnO nanorods is studied under the femtosecond laser with wavelength from 780 nm to 810 nm. A highly efficient SHG is obtained, which is attributed to the d{sub 131} component of the second-order nonlinear susceptibility. The largest d{sub 131} value is estimated to be 10.2 pm/V at the pumping wavelength of 800 nm, which indicates a large SHG response of the c-axis oriented ZnO nanorods in the near-resonant region. Theoretical calculation based on finite-difference time-domain simulation suggests a four-fold local-field enhancement of the SHG.
Authors:
; ; ; ;  [1] ;  [2]
  1. Wuhan National Laboratory for Optoelectronics and School of Physics, Huazhong University of Science and Technology, Wuhan 430074 (China)
  2. School of Physics and Engineering, Sun Yat-Sen University, Guangzhou 510275 (China)
Publication Date:
OSTI Identifier:
22310875
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 105; Journal Issue: 7; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; HARMONIC GENERATION; LASER RADIATION; NANOPARTICLES; NANOSTRUCTURES; OPTICAL PUMPING; SIMULATION; WAVELENGTHS; ZINC OXIDES