Strong two-photon absorption at telecommunications wavelengths in nickel bis(dithiolene) complexes
Jian-Yang Cho1, Stephen Barlow, Seth R Marder
1School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta 30306-0400, USA.
Abstract:
The two-photon absorption spectrum of a nickel bis(dithiolene) complex with extended conjugation and pi-donor substitution is measured by using Z-scan and pump-probe techniques with femtosecond pulses over the spectral range from 1.20 to 1.58 microm, which includes much of the telecommunications range. The peak two-photon cross section of over 5000 GM (1 GM = 10(-50) cm4 s photon(-1) molecule(-1)) occurs at approximately 1.24 microm, with significant two-photon absorption (>440 GM) throughout the spectral range examined.
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