Nano- and microstructured plasmonic substrates for laser and spectral applications

Nano- and micro-structures of thin plasmonic films by focused femtosecond laser pulses was demonstrated as chemo- and bio-sensing substrates for surface-enhanced spectroscopies. As an example, large regular arrays of microholes (mm-sized laboratory-scale) of millions holes with variable periods were produced in thin films of diverse plasmonic metals or alloys, demonstrating surface plasmon-polariton enhanced extraordinary transmission.