Third-order nonlinear optical properties of bis(tetrabutylammonium)bis(4,5-dithiolato-1,3-dithiole-2-thione)copper |
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| Affiliation: | 1. Department of Optics, Shandong University, Jinan 250100, China;2. State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China;1. Institute of Applied Physics of the Academy of Sciences of Moldova, Academic Str. 5, Chisinau MD2028, Republic of Moldova;2. Nordita, KTH Royal Institute of Technology and Stockholm University, Roslagstullsbacken 23, 10691 Stockholm, Sweden;1. Crystal Lab, Department of Physics & Astrophysics, University of Delhi, Delhi 110007, India;2. Department of Physics & Electronics, SGTB Khalsa College, University of Delhi, Delhi 110007, India;1. PG & Research Department of Physics, Arignar Anna Govt. Arts College, Cheyyar 604 407, Tamil Nadu, India;2. Department of Physics, C. Abdul Hakeem College, Melvisharam 632 509, Tamil Nadu, India;3. Department of Physics, St. Joseph’s College of Engineering, Chennai 600 119, Tamil Nadu, India;1. Research and Development Centre, Bharathiyar University, Coimbatore 641 046, India;2. Department of Physics, Government Arts College, Tiruvanamalai 606 601, India;3. Department of Physics, B.S Abdur Rahman University, Vandalur, Chennai, India;4. Research Centre Physics, Dhanalakshmi College of Engineering, Chennai 601 301, India |
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| Abstract: | Bis(tetrabutylammonium)bis(4,5-dithiolato-1,3-dithiole-2-thione)copper (BCDT) was synthesized and its third-order optical nonlinearity was characterized using picosecond Z-scan at 1064 nm. The Z-scan spectra reveal a large negative nonlinear refraction coefficient n2 as high as 4.0 × 10−18 m2/W and a slight two-photon absorption β, which is determined to be 3.4 × 10−12 m/W. The molecular second-order hyperpolarizability γ was calculated to be 6.5 × 10−32 esu. All these results suggest that this material has potential for the application of all-optical switching. |
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