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|Title:||Nonlinear refraction and absorption in metal cluster compound (n-Bu4N)4[Mo8Cu12O8S 24]: The dispersion behavior and optical limiting effect||Authors:||Ji, W.
|Keywords:||Metal cluster compounds
Optical limiting effects
|Issue Date:||Jan-1996||Citation:||Ji, W., Xie, W., Tang, S.H., Shi, S. (1996-01). Nonlinear refraction and absorption in metal cluster compound (n-Bu4N)4[Mo8Cu12O8S 24]: The dispersion behavior and optical limiting effect. Materials Chemistry and Physics 43 (1) : 45-51. ScholarBank@NUS Repository. https://doi.org/10.1016/0254-0584(95)01602-3||Abstract:||We report the observation of time resolved self-defocusing effects in metal cluster compound (n-Bu4N)4[Mo8Cu12O8S 24]. We also present the dispersion of the nonlinear refractive index, n2, of the compound measured over a spectral range below the resonance 2.45 eV. The time resolved self-defocusing effects clearly indicate that the observed nonlinear refraction should be of electronic origin. The dispersion can be fit by a two-level model. Away from the resonance, n2 = -2 × 10-11 cm2 W-1 M-1, while at 532 nm, just below the resonance, n2 = -(2.3 ± 0.5) × 10-9 cm2 W-1 M-1. In addition, the measurements reveal the involvement of excited state absorption. Based on these observed nonlinearities, optical limiting of the compound has been demonstrated with nanosecond laser pulses of 532 nm wavelength.||Source Title:||Materials Chemistry and Physics||URI:||http://scholarbank.nus.edu.sg/handle/10635/91600||ISSN:||02540584||DOI:||10.1016/0254-0584(95)01602-3|
|Appears in Collections:||Staff Publications|
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