Asymmetric diffraction from two-component optical gratings made of passive and lossy materials Academic Article uri icon

abstract

  • Diffraction with asymmetric enhancement and suppression, and alternating contrast for symmetric diffraction orders is demonstrated from planar two-component optical gratings made of passive/lossy materials. Simulations agree well with the experimental diffraction pattern of the fabricated sample. Our fabrication approach uses simple, standard planar micro/nano lithography employing one photoresist and one dye. No 3D profiling is needed. The phenomena is due to the left-right asymmetric material distribution in the periodic grating, which gives rise to non-reciprocal light coupling for diffraction to the positive and negative orders.

published proceedings

  • Optics Express

author list (cited authors)

  • Liang, G., Abouraddy, A., Christodoulides, D., & Thomas, E. L.

publication date

  • January 1, 2016 11:11 AM