Experimental measurements of optical constants of metals in the two-temperature state

Resumo

Complex permittivity of metals being in the two-temperature state of electron and ion sub-systems excited by the femtosecond laser pulses is measured. Diagnostics of the optical properties was performed in the sub-picosecond range, in the visible spectral range at the wavelengths of 800, 620, and 400 nm for gold, silver, nickel, and vanadium under electron sub-system heating up to 10–30 kK.