Abstract
We report two types of plasma photonic devices using complex refractive index around an absorption edge. Cherenkov radiation using laser-produced electron beam having a Maxellian distribution is evaluated by theoretical calculation. In the calculation result, this Cherenkov radiation is monochromatic in spite of energy distribution. This monochromaticity is due to characteristic of real part of complex refractive index around an absorption edge. Nonlinear transmission in metal using EUV light pulse is also reported. Transmission becomes nonlinearly higher with increase in energy density of EUV light from 6 J/cm2. This nonlinear phenomenon is caused by change of absorption coefficient, that is, imaginary part of complex refractive index.
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