Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Observation of enhanced optical spin Hall effect in a vertical
  hyperbolic metamaterial   Hyperbolic metamaterials, horizontally stacked metal and dielectric
multilayer, have recently been studied as a platform to observe optical spin
Hall effect. However, the large optical spin Hall effect in the horizontal
hyperbolic metamaterials accompanies extremely low transmission, which
obstructs its practical applications. Reducing the sample thickness to augment
the transmission causes diminishment of the shift. In this letter, we
demonstrate that a vertical hyperbolic metamaterial can enhance the shift by
several orders of magnitude in comparison to the shift of its horizontal
counterpart. Under the same conditions of material combinations and total
thickness, the shift enhancement, which is incident angle-dependent, can be
higher than 800-fold when the incident angle is 5 degree, and 5000-fold when
the incident angle is 1 degree. As a proof of concept, we fabricate a
large-scale gold nano-grating by nanoimprint lithography and measure the
helicity-dependent shift by Stokes polarimetry setup, which agrees well with
the simulated result. The gigantic optical spin Hall effect in a vertical
hyperbolic metamaterial will enable helicity-dependent control of optical
devices including filters, sensors, switches and beam splitters.

21
The categories of this paper are: adap-org
37
The categories of this paper are: supr-con
28
The categories of this paper are: alg-geom
10
The categories of this paper are: q-bio
31
The categories of this paper are: ao-sci
6
The categories of this paper are: astro-ph
18
The categories of this paper are: econ
23
The categories of this paper are: solv-int
9
The categories of this paper are: nlin
32
The categories of this paper are: atom-ph
13
The categories of this paper are: quant-ph
34
The categories of this paper are: chem-ph
19
The categories of this paper are: eess
33
The categories of this paper are: plasm-ph
1
The categories of this paper are: cs
14
The categories of this paper are: math-ph