Study on third-order nonlinear optical properties of [(C4H9)4N]Au(dmit)2 using Z-scan technique

A dmit<sup>2-</sup> salt: [(C<inf>4</inf>H<inf>9</inf>)<inf>4</inf>N]Au(dmit)<inf>2</inf> was synthesized. Its third-order nonlinear optical properties of its acetone solution were investigated by Z-scan technique using a pulsed laser with 28 ps duration and 10 Hz repetition at 532 nm. The third-order nonlinear refractive index n<inf>2</inf> and nonlinear absorption coefficient β of the sample solution were obtained to be about 4.997×10<sup>−12</sup> esu and 1.818 cm/GW at the concentration of 2×10−3 M. The second-order hyperpolarizability for its molecular was estimated to be as large as 2.74×10<sup>−31</sup> esu, suggesting [(C<inf>4</inf>H<inf>9</inf>)<inf>4</inf>N]Au(dmit)<inf>2</inf> is a promising material for all-optical switching.

[1]  E. Sargent,et al.  Ultrafast nonresonant third-order optical nonlinearity of fullerene-containing polyurethane films at telecommunication wavelengths , 2003 .

[2]  Q. Gong,et al.  Ultrafast optical Kerr effect of Ag-BaO composite thin films , 2003 .

[3]  J. Howard,et al.  An Improved Large-Scale (90 g) Synthesis of Bis(tetraethylammonium)bis(1,3-dithiole-2-thione-4,5-dithiol)zincate: Synthesis and X-ray Crystal Structures of Bicyclic and Tricyclic 1,4-Dithiocines Derived from 1,3-Dithiole-2-thione-4,5-dithiolate (DMIT) , 1998 .

[4]  Hong Yang,et al.  Third-order nonlinear optical properties of didodecyldimethylammonium-Au(dmit)(2) , 1999 .

[5]  Stephen Barlow,et al.  Bisdioxaborine polymethines with large third-order nonlinearities for all-optical signal processing. , 2006, Journal of the American Chemical Society.

[6]  Zheng-hao Chen,et al.  Z-scan determination of the large third-order optical nonlinearity of Rh:BaTiO3 thin films deposited on MgO substrates , 2002 .

[7]  H. Okamoto,et al.  Third-order optical nonlinearity in charge-transfer-type conjugated polymers , 2004 .

[8]  G I Stegeman,et al.  Large molecular third-order optical nonlinearities in polarized carotenoids. , 1997, Science.

[9]  E. W. Stryland,et al.  Sensitive Measurement of Optical Nonlinearities Using a Single Beam Special 30th Anniversary Feature , 1990 .

[10]  H. Okamoto,et al.  Third-order optical nonlinearity in regio-controlled polythiophene films , 2005 .

[11]  Hong Yang,et al.  Ultrafast third-order optical nonlinearity of polybenzonitriles , 2000 .

[12]  D. Petrov,et al.  Time‐resolved picosecond optical nonlinearity and all‐optical Kerr gate in poly (3‐hexadecylthiophene) , 1996 .

[13]  Alan J. Heeger,et al.  A 160-Femtosecond Optical Image Processor Based on a Conjugated Polymer , 1994, Science.

[14]  Hui-Tian Wang,et al.  Giant optical nonlinearity of a Bi2Nd2Ti3O12 ferroelectric thin film , 2004 .

[15]  Mihaela Dinu,et al.  Third-order nonlinearities in silicon at telecom wavelengths , 2003 .

[16]  S. Mukamel,et al.  Size Scaling of Third-Order Off-Resonant Polarizabilities. Electronic Coherence in Organic Oligomers , 2000 .

[17]  Qiying Chen,et al.  [60]Fullerene-containing polyurethane films with large ultrafast nonresonant third-order nonlinearity at telecommunication wavelengths. , 2003, Journal of the American Chemical Society.

[18]  Rik R. Tykwinski,et al.  Ultrafast optical Kerr effect measurements of third-order nonlinearities in cross-conjugated iso-polydiacetylene oligomers , 2002 .

[19]  Q. Gong,et al.  Enlarged ultrafast optical Kerr response of C 60 with attached multielectron donors , 2001 .