Fine tuning of a photonic band-gap with picosecond laser pulses
- Authors: Pasquazi, A; Stivala, S; Amendola, V; Meneghetti, M; Cucini, M; Comoretto, D; Assanto, G
- Publication year: 2008
- Type: eedings
- Key words: Optical tuning; photonic crystals
- OA Link: http://hdl.handle.net/10447/49288
Abstract
We report on light-driven tuning of the optical properties of colloidal photonic crystals (polystyrene opals) doped with gold nanoparticles (Au-np). Using picosecond pulses at 532 nm we obtained permanent changes in the stop band around 1700 nm, with resonance blue shifts as large as 30 nm.