Abstract
Monochromatic light, which is polarized in an arbitrary state, is totally internally reflected at angle of incidence without change of polarization by a right-angle prism of refractive index (e.g., N-LAK8 Schott glass at wavelength ), which is coated with a transparent thin film of refractive index (e.g., vacuum-deposited fluoride material) and of metric thickness equal to half of the vacuum wavelength of incident light, . The ambient medium of evanescent refraction is assumed to be vacuum, air, or an inert gas. Wavelength shifts of , or changes of the internal angle of incidence of around 45°, cause phase errors of only a few degrees. The reflected and incident polarization states are nearly identical in the presence of such small phase errors.
© 2009 Optical Society of America
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