Femtosecond absorption dynamics in glass-metal nanocomposites.
We report strong optical nonlinearity of glasses embedded with copper and silver nanoparticles. In pump-probe experiments with copper-doped glasses, the observed absorption bleaching with picosecond relaxation time is as high as 22%. Transmission femtosecond measurementsreveal the reverse saturable absorption with nonlinear absorption coefficient of 10(-10)cm/W in both copper- and silver-doped nanocomposites.
Halonen
M
M
Lipovskii
A A
AA
Svirko
Yu P
YP