Multi-dielectric thin films are usually studied as waveguiding structures with low absorption effect because of the low imaginary part of the refractive index. However, when properly designed, we demonstrated that multi-dielectric stacks can sustain large optical fields. We briefly present here our design method leading the fabrication of such multi-dielectric stacks, which can be optimized for arbitrary wavelengths, indices or polarizations. We then report on our experimental character-ization in near and far field, using a photon scanning tunneling microscope and scattering optical setup, respectively. This investigation may find applications for ultra-sensitive optical sensors or integrated light sources to mention a few.

Date Published: 12 September 2014
PDF: 7 pages
Proc. SPIE 9162, Active Photonic Materials VI, 916219 (12 September 2014); doi: 10.1117/12.2060824

Published in SPIE Proceedings Vol. 9162:
Active Photonic Materials VI
Ganapathi S. Subramania; Stavroula Foteinopoulou, Editor(s)