Optical angular momentum conversion in a nanoslit.
نویسندگان
چکیده
We demonstrate partial conversion of circularly polarized light into orbital angular momentum-carrying vortex light with opposite-handed circular polarization. This conversion is accomplished in a novel manner using the birefringent properties of a circular subwavelength slit in a thin metal film. Our technique can be applied over a very wide range of frequencies and even allows the creation of anisotropic vortices when using a slit without circular symmetry.
منابع مشابه
Optical angular momentum conversion in a nanoslit: reply.
We respond to a Comment on our Letter [Opt. Lett.37, 4946 (2012)], in which we reported on the spin-to-orbital optical angular momentum conversion of a circular nanoslit in a thin metal layer. We claimed, in an unfortunately worded sentence, that the conversion efficiency was independent of the slit's dichroism, which the Comment pointed out was incorrect. We acknowledge this and reiterate our ...
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عنوان ژورنال:
- Optics letters
دوره 37 23 شماره
صفحات -
تاریخ انتشار 2012