Nonlinear Optical Studies of [(C4H9)4N][Ni(dmit)2] by Z-Scan Technique

  • Received Date: July 15, 2011
  • Published Date: September 30, 2011
  • Nonlinear optical properties of an organo-metallic compound [(C4H9)4N][Ni(dmit)2] (dmit=2−thioxo-1,3-dithiole-4,5-dithiolate), abbreviated as BuNi, dissolved in acetone, are investigated using the Z-scan technique with a 40 ps pulse width at 1064 nm and a 1 ns and 15 ns pulse width at 1053 nm. Strong saturable absorption is found when the sample solution is irradiated by 40 ps and 1 ns laser pulses. When irradiated with a 15 ns laser pulse, a stronger reverse saturable absorption is found. The nonlinear optical absorption coefficients are -1.06×10-11, −2.02×10-11 and 2.73×10−10 m/W, respectively. All the results suggest that BuNi may be a promising candidate in the application of laser pulse compression in the near-infrared waveband.
  • Article Text

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