Hey! I am an undergrad student working on my final thesis on surface plasmons. I have the following queries. Any help will be highly appreciated. 1) How far do these plasmons propagate at the interface of the metal and dielectric? 2) Do these plasmons convert the incident TM polarised light to electrical pulse? 3) I am trying to focus these plasmons using nano-slit arrays. How will integrating more slits affect the focusing?