Optical limiting properties of silver nanoprisms

We report exceptional optical limiting properties of two kinds of Ag nanoprisms (pure Ag nanoprisms and Au@Ag core-shell nanoprisms) in solution that were photochemically prepared. Fluence-dependent transmittance measurements using 7 ns laser pulses of 532 nm wavelength showed that the optical limiting properties of two kinds of silver nanoprisms in solution are slightly better than that of carbon nanotube suspensions, which is known as a benchmark optical limiter. Nonlinear scattering experiments suggested that nonlinear scattering should play an important role in the observed optical limiting effects. (c) 2008 American Institute of Physics.