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期刊论文
Signs alteration of nonlinear refraction of cubane-like shaped clusters from nanosecond to picosecond pulses
Optics Communications 192 (2001) 273-276，-0001，（）：
The excited -state nonlinear refraction of a novel cubane-like shaped metal cluster MoOS3ICu3 (2-Mepy)3 IN DMF solution is studied by using Z-scan measurement technique with laser pulses of 10 ns and 40 ps pulse width at the wavelength of 532 nm, respectively. For picosecond pulses the compound possesses a self-focusing property, the positive nonlinear refraction is attributed to population transitions among singlet states, while for nanosecond pulses it exhibits a self-defocusing property and the negative nonlinear refraction is attributed to population relaxing to triplet states.
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