Biological nano-ceramic materials for holographic data storage |
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Authors: | Pengfei Wu Murty Bhamidipati Melissa Coles DVGLN Rao |
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Institution: | Instituto de Física de São Carlos – USP, Av. Trabalhador SãoCarlense 400, Cx: 369, CEP 13560-970, São Carlos, SP, Brazil |
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Abstract: | Here we present, a two-photon absorption (2PA) study in Fe2+ and Fe3+ oxidation states of cytochrome c molecule in water solution, using the femtosecond Z-scan technique with pulses from 560 to 850 nm. No qualitative difference was observed in the 2PA process for the two Fe oxidation states. The 2PA cross-sections, for both samples, increase as the wavelength approaches the absorption band, in agreement with the resonant denominator in the sum-over states model, presenting a maximum value of approximately 1000 GM at about 600 nm. |
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