A subwavelength slit as a quarter-wave retarder.
نویسندگان
چکیده
We have experimentally studied the polarization-dependent transmission properties of a nanoslit in a gold film as a function of its width. The slit exhibits strong birefringence and dichroism. We find, surprisingly, that the transmission of the polarization parallel to the slit only disappears when the slit is much narrower than half a wavelength, while the transmission of the perpendicular component is reduced by the excitation of surface plasmons. We exploit the slit's dichroism and birefringence to realize a quarter-wave retarder.
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ورودعنوان ژورنال:
- Optics express
دوره 19 24 شماره
صفحات -
تاریخ انتشار 2011