Tailoring TiO₂/Al₂O₃ heterolayers as optical filters for the visible region.

ABSTRACT: Optical filters operating in the visible region of the spectrum are highly desired for applications ranging from optical communication and sensing to fluorescence microscopy and skin therapy. However, complex fabrication procedures and/or inferior performance, limit the practical applications of previously reported thin-film-based optical filters. Herein, we describe the structual design concepts and facile fabrication of vertically stacked heterolayers of TiO₂/Al₂O₃ to obtain a bandpass filter and a longwave pass edge filter operating in the spectral range 410-600 nm and 400-597 nm, respectively. The optical filters are designed according to MacLeod simulation and fabricated via magnetron sputtering, depositing alternative stacks of low (Al₂

SUBMITTER: Anwar N 

PROVIDER: S-EPMC9419854 | biostudies-literature | 2022 Mar

REPOSITORIES: biostudies-literature