Systematic study of resonant transmission effects in visible band using variable depth gratings.

ABSTRACT: The article focuses on depth-dependent visible band transmission effects in a symmetrical "insulator-metal-insulator" diffraction system based on a variable depth grating. These effects were studied both experimentally and theoretically in TM and TE polarizations. In particular, the existence of an optimized grating depth for plasmon-mediated resonant transmission was confirmed experimentally, and differences in TE and TM transmission behavior are discussed. We utilize a simple and flexible fabrication approach for rapid synthesis of apodized structures with adiabatically varying depth based on a beat pattern of two interferential lithography exposures. The present study can be useful in the fields of transmission-based optical security elements and biosensors.

SUBMITTER: Ushkov AA 

PROVIDER: S-EPMC6797731 | biostudies-literature | 2019 Oct

REPOSITORIES: biostudies-literature