Abstract
A filter in which the two high-reflection elements are dielectric multilayers of the type that show a rapid wavelength variation of the phase change on reflection yields several pass bands, some of which are very narrow. The grouping of these bands, and their various widths, depend in a characteristic way on the order in which the individual layers of the multilayers are arranged on the two sides of the spacer. Fair quantitative agreement is obtained between the theoretical and observed positions and widths of the bands. For an asymmetrical arrangement of the layers the filter shows, at one particular wavelength, no splitting of the pass band into polarized components at non-normal incidence.
© 1959 Optical Society of America
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