Abstract
A quarter-wave layer (QWL) of high refractive index, which is deposited on a transparent prism of low refractive index, can be designed to split an incident -polarized light beam at the Brewster angle (BA) of the air–substrate interface into -polarized reflected and transmitted beams of equal intensity (50% each) that travel in orthogonal directions. For reflection of -polarized light at the BA, the supported QWL functions as a free-standing (unsupported) pellicle. An exemplary design is presented that uses QWL deposited on an IRTRAN1 prism for applications (such as Michelson and Mach–Zehnder interferometry) with a variable compositional fraction in the 2–6 μm mid-IR spectral range.
© 2017 Optical Society of America
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