Dichroic behavior of multilayer structures based on anisotropically nanostructured silicon

Reference:

Diener, J., Kunzner, N., Kovalev, D., Gross, E., Koch, F. and Fujii, M., 2002. Dichroic behavior of multilayer structures based on anisotropically nanostructured silicon. Journal of Applied Physics, 91 (10), pp. 6704-6709.

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Abstract

Multilayer structures of anisotropically nanostructured (birefringent) silicon have been fabricated and studied by polarization-resolved reflection and transmission measurements. We demonstrate that stacks of birefringent porous silicon layers with alternating refractive indices and thicknesses act as dichroic Bragg reflectors or dichroic microcavities with a transmission/reflection dependent on the polarization direction of the incident light. The possibility of separate fine tuning of two orthogonally polarized transmission/reflection bands and their spectral splitting is demonstrated. (C) 2002 American Institute of Physics.

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