Improving the quality factor of the localized surface plasmon resonance

The low quality factor (Q-factor) of the localized surface plasmon resonance (LSPR) is a significant barrier for further progress of LSPR-based devices. Therefore, we investigate the effect that materials typically used in the nano-fabrication process have on the LSPR wavelength and Q-factor in order to find avenues of improvement. Specifically we investigate the influence of charge dissipation and adhesion layers upon the LSPR of linearly polarizing nano-antennas and show that a simple quasi-static model can be used to describe such systems. (C) 2015 Optical Society of America.