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|Title:||Optical limiting with neutral nickel dithiolene complexes|
Van Stryland, E.W.
|Citation:||Tan, W.L.,Ji, W.,Zuo, J.L.,Bai, J.F.,You, X.Z.,Lim, J.H.,Yang, S.S.,Hagan, D.J.,Van Stryland, E.W. (2000). Optical limiting with neutral nickel dithiolene complexes. Materials Research Society Symposium - Proceedings 597 : 413-418. ScholarBank@NUS Repository.|
|Abstract:||We report an investigation of optical-limiting behavior in two neutral nickel complexes with multi-sulfur 1,2 dithiolene ligands, [Ni(medt)2] 1 (medt = 5,6-dihydro-6-methyl-1,4-dithiin-2,3-dithiolate) and [Ni(phdt)2] 2 (phdt = 5,6-dihydro-5-phenyl-1,4-dithiin-2,3-dithiolate) in benzene solution. The fluence-dependent transmission of the complexes was observed with nanosecond and picosecond laser pulses at 532-nm wavelength. The limiting thresholds of the complexes were approximately 0.3 J/cm2, when measured with the picosecond pulses. Both picosecond time-resolved pump-probe and Z-scan measurement revealed that the limiting effects should originate from excited-state absorption and refraction. The transparency window (400 to approximately 900 nm), observed in the linear absorption spectra of the complexes, indicated that their limiting response should cover a wider range than those of fullerenes and phthalocyanines.|
|Source Title:||Materials Research Society Symposium - Proceedings|
|Appears in Collections:||Staff Publications|
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